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05/03/2012 - 13:00
MIRADAS: The Next-Generation Infrared Spectrograph for the GTC
MIRADAS is a near-infrared multi-object R=20,000 echelle spectrograph for the 10.4-meter Gran Telescopio Canarias. It is the most powerful astronomical instrument of its kind ever envisioned, with an observing efficiency more than an order of magnitude greater than current capabilities for 10-meter-class telescopes. The (still-growing) MIRADAS science team includes more than 40 scientists from 8 institutions in the GTC community. In this talk...
Stephen Eikenberry
23/02/2012 - 13:00
Seeking and Mocking Non-thermal Emission in Galaxy Clusters
Diffuse synchrotron radio emission is observed in many clusters of galaxies probing the presence of high energy cosmic ray (CR) electrons. This emission can be explained by the hadronic model where the electron population originates from the interactions between CR protons and the cluster ambient gas. Additionally, a very high energy gamma-ray emission is also expected. I will briefly review the current knowledge on the non-thermal emission...
Fabio Zandanel
20/02/2012
HEXA: the future of sky mapping
Today begins a meeting about HEXA, a project for a new 6,5 meter telescope to be located at Calar Alto Observatory (Almería)  
16/02/2012 - 13:00
Modelos teóricos de las nebulosas de Eta Carinae
En esta plática se presentan modelos teóricos de los eventos eruptivos de 1840 (la gran erupción) y de 1890 (la menor erupción) de la estrella masiva Eta Car. Las nebulosas bipolares en torno a la estrella se formaron de la interacción del material eyectado durante estas erupciones con el viento estándar de la estrella. En nuestros modelos, se supone un escenario de colisión de...
Ricardo Francisco González Domínguez
09/02/2012 - 16:00
Supernovas. Dónde, cuándo y por qué
Las explosiones de supernova se encuentran entre los fenómenos más violentos del Universo y la enorme energía que se libera en ellas hace que podamos observarlas a grandes distancias. Estudiando el lugar y la velocidad a la que se producen, podemos obtener información física fundamental de las galaxias en las que ocurren. En concreto, veremos cómo la distribución radial de supernovas a lo largo...
Rubén Herrero Illana - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
02/02/2012 - 13:00
Efectos de los cúmulos ionizantes de baja masa en el espectro de regiones HII y galaxias
En este seminario presentaré mi trabajo de tesis sobre el modelado del espectro de líneas de emisión de regiones H II y galaxias con formación estelar. Primero hablaré sobre la influencia de los efectos de muestreo de la función inicial de masas estelares (IMF)  en el continuo ionizante de los cúmulos y en el espectro de regiones H II,  centrando la atención en los cú...
Marcos Villaverde
26/01/2012 - 13:00
Maser emission in evolved stars: from AGB to PNe
I will present a review of maser emission in evolved stars from the asymptotic giant branch (AGB) to planetary nebulae (PNe). The circumstellar envelopes of oxygen-rich evolved stars provide optimal conditions to pump different species of masers, emitting at radio wavelengths. Interferometric observations of masers are a powerful tool to study with the highest angular resolution the molecular gas around evolved stars, because...
Lucero Uscanga Aguilera
19/01/2012 - 13:00
Dwarf galaxies as dark matter laboratories
Dwarf spheroidal galaxies are key objects in the current cosmological paradigm: first, they are the least luminous galaxies, likely signaling the minimum halo mass at which gas can be accreted and converted into stars. Second, they all have ancient stellar populations, providing clues on star formation/feedback processes at early stages of the Universe. Third, they are the most numerous satellites about the Milky Way and M31,...
Jorge Peñarrubia
17/01/2012 - 13:30
Albedo and atmospheric constraints of dwarf planet Makemake from a stellar occultation
Makemake is an icy dwarf planet with a spectrum similar to Eris and Pluto, and is currently at a distance to the Sun intermediate between the two. Although Makemake’s size (1,420 ± 60 km) and albedo are roughly known, there has been no constraint on its density and there were expectations that it could have a Pluto-like atmosphere. Here we report the results from a stellar occultation by Makemake on 2011...
José Luis Ortiz
12/01/2012 - 13:00
Everything you always wanted to know about extinction but were afraid to ask
Twenty two years ago Cardelli et al. published their seminal paper on Galactic extinction laws. In the first part of my talk I will explore that (often quoted but also often misunderstood) paper and detail its strengths and weaknesses. In the second part I will describe the two datasets that have finally allowed the Cardelli et al. laws to be tested to their limit and I will present a new family of extinction laws derived from the new data...
Jesús Maíz Apellániz
11/01/2012 - 16:00
Profundidad de falla y flujo térmico en Mercurio
Los escarpes lobulados son las estructuras tectónicas más relevantes existentes en Mercurio. Su morfología y la deformación producida en su intersección con otras estructuras indican que los escarpes constituyen la expresión en superficie de fallas inversas formadas, principalmente, por el enfriamiento y contracción del planeta. A partir de la geometría de estas fallas podemos obtener...
Mª Isabel Egea González - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
10/01/2012 - 13:30
IAA: its structure, failures, and potential
 In this talk I will first show the structure of our Institute, the task division and the people responsible for these taks. I will also analyse all the procedures, customs and usages that drift us apart from the dream IAA. Finally, I will make some remarks about the (underestimated? disregarded?) potential of our Institute.
Matilde Fernández Hernández
22/12/2011 - 12:34
Dynamical Modeling of Luminous Infrared Galaxy Mergers
It is widely accepted that galaxy mergers can have a significant effect on galaxy properties and may be an important part of galaxy evolution. Enhanced star formation is one frequently observed property of (gas rich) mergers and theoretical prescriptions for star formation can generally reproduce the observed behavior. However a detailed study comparison of these prescriptions with individual galaxy merger events has not been...
George C. Privon
15/12/2011 - 13:00
X-ray properties of nearby luminous infrared galaxies
I present results of X-ray observations of a complete sample of luminous infrared galaxies (LIRGs) from the GOALS, a multi-wavelength project to study the most luminous IR-selected galaxies in the local Universe. X-ray imaging at an arc-second resolution obtained with the Chandra X-ray Observatory provides locations of an active nucleus, if present, and extended morphology of starburst-driven winds in those LIRGs. An inspection of their X-ray...
Kazushi Iwasawa
01/12/2011 - 13:00
Mass, metallicity and SFR relationships in star forming galaxies using deep surveys
To understand the formation and evolution of galaxies, it is important to have a full comprehension of the role played by Metallicity, Star Formation Rate (SFR), and stellar mass of galaxies. The interplay of these parameters at different redshifts will substantially affect the evolution of galaxies and, as a consequence, the evolution of these parameters provides important constraints for the galaxy evolution models. We studied the...
Maritza A. Lara-Lopez
24/11/2011 - 13:00
The Bayesian Galaxy Cluster Finder and its Application to Large Surveys
One of the main purposes of Large Surveys is the study of galaxy clusters. However, it is not an easy task to compile a complete sample. In this talk, I will present a new technique for detecting galaxy clusters called the Bayesian Cluster Finder (BCF) which is able to determine the position, redshift and richness of clusters in any survey. I will introduce the simulations that we performed to test the algorithm through realistic mock galaxy...
Begoña Ascaso
23/11/2011 - 16:00
Vientos Estelares en Estrellas Masivas
En esta charla se dará una perspectiva general sobre los vientos en estrellas masivas. En particular se pretende explicar la emisión de rayos X alrededor de estrellas masivas evolucionadas.
Jesús Alberto Toalá - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
17/11/2011 - 13:00
Revealing the hidden supernova population in luminous infrared galaxies
A substantial fraction of star formation (SF) and hence of the core-collapse supernovae (CCSNe) in the Universe is hidden behind dust. At higher-z obscured star formation in luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) actually dominates over SF seen in the UV and optical. These same objects are expected to hide in their nuclear regions large numbers of undetected CCSNe. In this talk I describe our ongoing efforts using...
Seppo Mattila
07/11/2011
Science Week at IAA
Fifht edition of Noches de Ciencia, a series of conferences for the Science Week  
03/11/2011 - 13:00
Gamma-Ray-Bursts, High-Energy-Cosmic-Rays and Beam-Plasma Instabilities
Gamma-Ray-Bursts and High-Energy-Cosmic-Rays are two of the most intriguing enigmas of astrophysics. A promising scenario solving both problems consists in the Fermi-like acceleration of particles by relativistic collisionless shocks. These shocks could generate the Gamma Burst together with some highly energetic cosmic rays, in the earlier phase of a Supernovae explosion. Later on, the  Supernovae Remnant could still accelerate cosmic...
Antoine Bret
02/11/2011 - 16:00
El zoológico de los plasmas en la alta atmósfera
En verano de 1989 investigadores estadounidenses grabaron varios fotogramas de intensos destellos luminosos provenientes de un fragmento de cielo, sin nubes localizado a más de 50 km de altura y que, sin que ellos se dieran cuenta en ese momento, se encontraban sobre lejanas nubes de tormenta. Habían hecho la primera observación de los llamados Transient Luminous Events o TLEs.
Francisco Carlos Parra Rojas - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
27/10/2011 - 14:00
Locating the gamma-ray emission region in AGN from multi-messenger observations
Relativistic jets in AGN, in general, and in blazars, in particular, are among the most energetic and powerful astrophysical phenomena known so far. Their relativistic nature provides them with the ability to emit profusely at all spectral ranges from radio wavelengths to gamma-rays. They display extreme variability at all time scales (from hours to years). Since the birth of gamma-ray astronomy, locating the origin of gamma-ray emission has...
Iván Agudo
20/10/2011 - 14:00
Mapping star-formation in the Milky Way
In the last few years, it has become possible to measure the distance and the velocity vector of young stars located within 500 pc of the Sun with an accuracy of order 1% using Very Long Baseline Interferometry (VLBI) techniques. This represents an improvement by more than 1 order of magnitude over what was previously possible, and opens the door to some extremely high accuracy astrophysics. In particular, theoretical pre-main sequence...
Laurent Loinard
06/10/2011 - 15:00
Estallidos de rayos gamma: una breve introducción
Los Estallidos de Rayos Gamma son los eventos más energéticos en el Universo después del Big Bang. Ocurren a distancias cosmológicas, con desplazamientos al rojo conocidos de hasta z=8.2. Son fenómenos de sumo interés para diversas áreas de la Astronomía y la Física de Altas Energías. Dada la falta de transparencia de nuestra atmósfera a los rayos gamma y la corta...
Juan Carlos Tello - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
22/09/2011 - 14:00
Early r-process enrichment in the halo: Process and implications/The future role of the Nordic Optical Telescope
I: Early r-process enrichment in the halo: Process and implications Current thinking suggests that the outer Galactic halo formed first, with stars dominated by fresh C(NO) elements, but soon with increasing amounts of heavier elements. The now appreciable sample of extremely metal-poor (EMP) stars with [Fe/H] ~ -3 trace the transition to this chemically more diversified regime. A small fraction of these EMP giants contain r-process...
Johannes Andersen
16/09/2011 - 13:00
Early Planet Formation from an Experimentalist’s Point of View
Planet formation starts in gaseous protoplanetary disks. Small grains move around, collide, stick together and grow. However, many collisional roads also lead to destruction of larger bodies. Which ones are prevailing and if this is the basic way to planet formation is still an open question, but there are modes to grow particles to larger size even in ‘high speed’ collisions. This talk will also touch upon processes of transport...
Prof. Gerhard Wurm
05/09/2011 - 09/09/2011
20th Stellar Pulsation Conference Series
Granada
07/07/2011 - 14:00
Coagulation, restructuring and fragmentation of dust grains in the protoplanetary disks: first stages of Solar System formation
The understanding of the formation of the planetary systems is one of the main topics of modern astrophysics and its study requires a synergetic effort of observations, laboratory experiments and theoretical models. It is generally accepted that planets originate in the dust disk that remains around a star after its formation (protoplanetary disk). Nevertheless there are no clear ideas on the physical conditions that are required, neither on...
Walter Sabolo
30/06/2011 - 14:00
Quasi-periodicities in the periodograms of Corot Delta Scuti stars
Periodic patterns are not expected to be found in the frequency spectra of delta-Scuti stars, as in solar-like pulsators. However, some efforts have been carried out in order to find any signal of periodicity in this type of stars (Handler et al., 1997; Breger et al., 1999, 2009). These works used ground-base observations and the results have not been conclusive. In our study we have used data from CoRoT of two delta-Scuti stars poorly known. We...
Antonio García Hernández
29/06/2011 - 15:00
El impacto de la astrosismología en astrofísica
El conocimiento sobre la estructura y la física de los interiores estelares ha tenido un importante avance durante las últimas décadas gracias a la interpretación de las pulsaciones observadas en ellas. Esa es la meta principal de la Astrosismología. No obstante, los resultados que se desprenden de las investigaciones realizadas por astrosismólogos pueden tener un gran impacto sobre distintos campos de...
Javier Pascual Granado - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
20/06/2011 - 14:00
Simulation of Relativistic Jets with Macroscopic and Microscopic Processes and Associated Self-consistent Radiation
Relativistic jets are ubiquitous in astrophysical systems. In this talk I will present recent research results from RMHD simulations designed to study the CD kink instability of relativistic jets and the magnetic field amplification that occurs in relativistic shocks in an inhomogeneous medium. I will then present the results of RPIC simulations of particle acceleration in relativistic shocks and self-consistent calculation of the radiation at...
Ken Nishikawa
16/06/2011 - 14:00
Time-Dependent Hamiltonians in Quantum Mechanics and Inflationary Cosmology
We revise the problem which appears in Quantum Mechanics when the Hamiltonian depends explicitly on time and provide a general setting to address such quantum systems. As a paradigmatic example we analyse the case of the damped harmonic oscillator (satisfying the Caldirola-Kanai equation) and extend the system to accomodate the ordinary time translation as a true symmetry (Bateman dual system). This general scheme applies in particular to the...
Julio Guerrero García
08/06/2011 - 15:00
Método K-Correlated para el estudio del transporte radiativo en Marte
En esta sesión CCD os explicaré en que consiste el método k-correlated, técnica usada para el estudio del transporte radiativo. Hablaré sobre sus ventajas e inconvenientes y expondré algunos de los últimos resultados que hemos obtenido.
Javier Ruiz Madrona - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
07/06/2011 - 14:00
EST: a large solar telescope for the XXI century
The European Solar Telescope (EST) is a project for a 4-meter class telescope to be located in the Canary Islands. It is promoted by the European Association for Solar Telescopes (EAST). This is a consortium formed by a number of research organizations from fifteen European countries (Austria, Croatia, Czech Republic, France, Germany, Hungary, Italy, the Netherlands, Norway, Poland, Slovak Republic, Spain, Sweden, Switzerland, and United...
Manolo Collados
05/06/2011 - 10/06/2011
II Workshop on Robotic Autonomous Observatories
Málaga
02/06/2011 - 14:00
Coronal heating on the Sun: new observations and “realistic” 3D numerical models
The heating of the solar corona is a long standing problem of solar physics, in fact dating back to the time when it was first discovered that the corona was quite hot. In short, the question is how one can find a credible physical mechanism to transport and dissipate a small fraction of the “mechanical” energy contained in the convection zone in(to) the corona. Amusingly, most answers to the question date back to the late 1940...
Prof. Viggo Hansteen
31/05/2011 - 14:00
Dark Matter and Stars
Under the assumption that Dark Matter (DM) is composed of Weakly Interacting Massive Particles (WIMPs), it can affect the properties of stars. In the local Universe effects are feeble, nonetheless they can in principle be used in order to pose constraints on the nature of DM particles with observations of the Sun, and of compact objects at the Galactic Center, in Globular Clusters and in White Dwarf Galaxies. The first generation of stars to...
Fabio Iocco
26/05/2011 - 14:00
The BigBOSS dark energy experiment
The BigBOSS experiment is a project designed to unlock the mystery of dark energy using existing ground-based facilities operated by National Optical Astronomy Observatory (NOAO). A new 5000-fiber R=5000 spectrograph covering a 3-degree diameter field will measure clustering properties in the distribution of galaxies and hydrogen gas spanning redshifts from 0.2 < z <3.5. This project will enable an unprecedent multi-object spectroscopic...
F. Prada & M. Azzaro
12/05/2011 - 14:00
ALMA Early Science
Tbd  
Stéphane Léon
05/05/2011 - 14:00
Gamma-ray Bursts - what kind of stars do they come from?
Long GRBs are the most luminous objects in the universe and mark the collapse of a very massive star, usually accompanied by a relativistic supernova. Their large distances do not allow us to directly identify the progenitor star as we were able to do with some type of supernova. We therefore rely on indirect methods to derive some information on the kind of progenitor star or system and what makes a massive star to explode in a supernova or...
Christina Thoene
28/04/2011 - 14:00
The connection between missing stellar cusps in galactic nuclei and general relativity
One of the most interesting sources of gravitational waves is the inspiral of compact objects on to a massive black hole (MBH), commonly referred to as an extreme-mass ratio inspiral. The small object, typically a stellar black hole, emits significant amounts of GW along each orbit in the detector bandwidth. On the other hand, recent observations of the Galactic center revealed a dearth of giant stars inside the inner parsec relative to the...
Pau Amaro Seoane
14/04/2011 - 14:00
Discos de acreción alrededor de protoestrellas de masa alta e intermedia
Las observaciones directas, que resuelvan angularmente los discos de acreción en torno a estrellas jóvenes de masa alta e intermedia son escasas. Presentaré los resultados de nuevas observaciones radiointerferométricas de alta resolución angular que, junto con nuestros modelos teóricos, revelan la presencia de discos de acreción en torno a dos estrellas en formación. En el caso de la...
Mayra Osorio
24/03/2011 - 13:00
The dirty side of astronomy: carbonaceous dust
Since the beginning of modern astronomy, dust has always been considered an obstacle on the path to understanding both nearby and far away phenomena. In this talk I will explain briefly the origin and the life-cycle of carbonaceous dust, introduce to new discoveries and old puzzles and eventually show how dust can be used as a powerful astronomical tool.  
Alessandra Candian
22/03/2011 - 13:00
Analysis of chemical and dynamical processes in the Earth's Atmosphere with MIPAS data
MIPAS is a Fourier transform limb emission mid-infrared spectrometer in Earth orbit. It provides spectrally resolved radiance profiles in the 4.15 to 14.6 mum spectral region from about 5 km up to 70 km (in its nominal mode) and up to 150 km in special observation modes. At IMK and IAA, we retrieve temperature and the distributions of up to 30 trace species from these data, which then are used to study chemistry and dynamics of the atmosphere...
Gabi Stiller
17/03/2011 - 13:00
Star formation at high-z: a stacking approach applied to mm-data
Star formation is a key ingredient of the formation and evolution of galaxies. The associated dust emission has been observed up to very high-z. At mm wavelengths, this can be done thanks to the negative k-correction, which compensates the increasing luminosity distance. However, only the brightest sources can be detected with the present instruments, even with the early ALMA capabilities. Here we present a routine to perform stacking analysis...
Roberto Decarli
16/03/2011 - 16:00
Interferometría, ¿magia o ciencia?
Desde las primeras observaciones en 1946, la técnica de la interferometría ha tenido un desarrollo exponencial, especialmente aplicado al estudio en radio del Universo. A pesar de tener un fundamento físico sencillo son muchas las complicaciones técnicas a las que hay que enfrentarse, convirtiendo estos telescopios en increíbles obras de ingeniería. Sin embargo los problemas técnicos quedan...
Rubén Herrero Illana - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
10/03/2011 - 13:00
El Centro Astronómico Hispano-Alemán: 2014-2018 y más allá
El Observatorio de Calar Alto cuenta en estos momentos con tres telescopios opticos-infrarrojos y un conjunto de 11 instrumentos que cubren un gran rango de necesidades en distintos campos científicos, con una demanda desigual por parte de la comunidad astronómica. Comenzando con los datos adquiridos durante segundo semestre del 2010, a lo largo del 2011 se procederá a la apertura del archivo público del observatorio, con el objetivo de...
David Barrado
03/03/2011 - 13:00
A 2D Spectroscopy view of NGC 588
Most of today's stars were formed in high intensity episodes about 7-10 Gyr ago. However, at these redshifts both resolution and dimming effects make it difficult to study in detail the interaction of the gas, dust and newly formed stars. Giant H II regions in very nearby galaxies constitute their best local counterpart to address such a study. Here, I present an analysis of NGC 588, a GHIIR in M33, based on optical Integral Field Spectroscopy...
Ana Monreal Ibero
02/03/2011 - 16:00
Espectroscopía de Campo Integral (IFS)
Los espectrógrafos de campo integral (IFS) son instrumentos que nos permiten un estudio espectral sobre un campo de visión bidimensional, es decir, análisis de cubos con 3 dimensiones: dos espaciales y una espectral. Su uso cada vez es más común pues permiten estudiar la morfología de objetos extensos y sus propiedades espectrales simultáneamente. En esta charla os contaré los...
Alba Fernández Martín - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
24/02/2011 - 13:00
Gravitational Wave Astronomy in the 21st Century
The discovery of the binary pulsar PSR B1913+16 by Hulse and Taylor provided definite evidence of the existence of gravitational waves as predicted by Einstein's General Theory of Relativity. It also contributed to encourage the development of different gravitational wave detectors that was pioneered in the 60s by Joseph Weber. Presently, we have a world-wide network of ground detectors that is expected to achieve the first detections during the...
Carlos F. Sopuerta
17/02/2011 - 13:00
The Physics and Philosophy behind Cosmic Time
How far back in time can we have knowledge of the universe? Most cosmologists would agree that the physics describing the ‘material content’ of the universe becomes increasingly speculative the further we go back in time. By contrast, it is widely assumed that the concept of time itself – by virtue of the cosmological standard model – can be safely extrapolated sixty orders of magnitude back from the present to the Planck...
Henrik Zinkernagel
10/02/2011 - 13:00
A Magnetized Jet from a Massive Protostar
Supersonic jets are observed to emerge from a wide variety of astrophysical systems, from young stellar objects (YSOs) to AGNs. Despite their different physical scales (from hundreds to billions of astronomical units), they have strong morphological similarities. However, it is yet unclear whether there is a universal mechanism that can explain the origin of all these jets. Theoretical models suggest that the magnetic field is a fundamental...
Carlos Carrasco González
03/02/2011 - 13:00
The Transneptunian Region and Clues about Planet Formation
The Transneptunian belt is a reservoir of icy bodies in the outer reaches of our solar system. This region is believed to be the source of the Jupiter-Family Comets and is also thought to contain very pristine material, the leftovers of planet formation beyond the ice line. Therefore, the TransNeptunian Objects (TNOs) carry important information on how the solar system was formed, and can give plenty of details on the processes that were...
José Luis Ortíz
01/02/2011 - 13:00
The ESO VLT instrumentation: Technical overview
The present talk emphasizes the most relevant challenges which have been overcome from engineering point of view in order to build the first generation of VLT instruments. Indeed, VLT instrumentation has meant an enormous leap into technical complexity with respect to existing instrumentation for 4m-class telescopes. How ESO has managed the design, procurement and installation of the VLT instrument suite is here presented, as well as the special...
Jean-Louis Lizon
27/01/2011 - 13:00
Substellar Objects in Nearby Young Clusters (SONYC): Towards an Unbiased Census
SONYC, "Substellar Objects in Nearby Young Clusters", is an ongoing project to provide a complete census of the brown dwarf and planemo (free-floating objects with masses comparable to those of massive planets)population in nearby young clusters. The SONYC survey relies on extremely deep wide-field optical and near-infrared imaging and follow-up spectroscopy. We make use of Subaru, VLT, Gemini, CTIO, NTT, and Spitzer to probe the...
Koraljka Muzic
26/01/2011 - 16:00
CheFlet polar basis for astronomical data analysis
We present a new method to decompose galaxy images. We have developed a polar orthonormal basis, built using Chebyshev rational functions to expand the radial coordinate, and Fourier series to represent the azimuthal component. The method can fit galaxies in a very compact way, including simultaneously most of the galaxy substructure and the extended wings of the galaxy profile. Some applications of this method are being developed: photometry...
Yolanda Jiménez Teja - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
20/01/2011 - 13:00
Star formation at small galactic scales
We present a study of the distribution of star, gas, and dust components in star-forming regions in nearby galaxies. The targets sample a wide range of luminosities and morphologies in order to study how the violent star formation influences the dust and gas distribution inside the star-forming regions. The analysis is based on the comparison of multi-wavelength data from theFar-Ultraviolet (GALEX) to the Infrared (SPITZER and HERSCHEL).  
Mónica Relaño
13/01/2011 - 13:00
Observaciones de la atmósfera de Marte desde la Tierra
Hoy día hay un renovado interés en realizar observaciones de Marte con instrumentación en Tierra de un modo sistemático. Y hacerlo, ademas, en el infrarrojo. La tarea no está exenta de dificultades, incluyendo la contaminación telúrica y el pequeño tamaño del planeta rojo. En este seminario resumiré algunas de las investigaciones que se llevan a cabo, en las que participamos, y que están encaminadas a explotar una de las ventanas infrarrojas...
Miguel Ángel López Valverde
11/01/2011 - 16:00
Sondeo de la alta atmósfera de Venus y Marte usando espectroscopía molecular en el IR
La alta atmósfera de los planetas terrestres se caracteriza, entre otros aspectos, por sus bajas densidades y condiciones ópticamente delgadas a la radiación solar en el visible/UV. La única excepción son las bandas moleculares IR en la región espectral por encima de 2um por las cuales los procesos radiativos se hacen significativos. Por tanto, las observaciones IR constituyen una herramienta ú...
Gabriella Gilli - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
16/12/2010 - 13:00
El campo magnético en galaxias
El campo magnético de una galaxia no es solamente importante porque nos proporciona un método de observación, sino también por sus efectos dinámicos. En el pasado se estudió el proceso v -> B pero cada vez se reconoce más el proceso B -> v , es decir el campo magnético ha dejado de ser una magnitud pasiva para influir activamente en el movimiento. La importancia del magnetismo galáctico afecta a determinadas estructuras y también...
Eduardo Battaner
09/12/2010 - 13:00
Galactic surveys of Planetary nebulae and their astrophysics: past present and future
I will briefly review the PN phenomena and describe the power of these objects as probes of stellar evolution and Galactic evolution. I will address their use as potent kinematic tracers and their value as cosmological distance indicators. Finally I will review the recent major progress in discovery, distance determinations and elimination of mimics before touching on the future potential using multi-wavelength optical-MIR-radio data.  
Quentin Parker
02/12/2010 - 13:00
Stellar Population Synthesis at the End of 2010
Recent developments in stellar evolution theory describing critical phases of this process (e.g. TP-AGB), and the availability of new libraries of theoretical and empirical stellar spectra allow us to build more complete and realistic population synthesis models than those in common use. I will discuss the application of these models to various problems of interest and will review those aspects that still require some amount of theoretical and...
Gustavo Bruzual
01/12/2010 - 16:00
Stelar Population Synthesis Models
Las galaxias son sistemas formados por muchas poblaciones estelares diferentes. Cada una de estas poblaciones deja su registro fósil en el espectro de las galaxias que nos da información sobre el proceso de formación y evolución de las mismas. Los modelos de síntesis de poblaciones estelares son una herramienta imprescindible para hacer este tipo de estudios ya que son la única manera que tenemos de...
Clara Cortijo Ferrero - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
23/11/2010 - 13:00
Dark matter on department scale
The direct detection of dark matter on Earth depends on its density and its velocity in the Solar neighbourhood. Unforunately, it is uncertain whether the dark matter distribution on the relevant physical scales (milliparsec) is homogeneous or not. Traditional N-body simulations cannot achieve the required resolution, so we have developed an ingenious method, able to achieve virtually any arbitrary resolution at almost no computational cost....
Daniele Fantin
18/11/2010 - 13:00
Photometric Redshifts and Cosmology: ALHAMBRA, CLASH and the J-PAS Survey
I start with a brief overview of photometric redshifts. I describe the new version of the Bayesian Photometric Redshift software, BPZ, and compare its performance with other public photo-z codes as EAZY or LePhare on datasets like COSMOS or ALHAMBRA. I also introduce two large cosmological projects which heavily rely on photometric redshifts: the MultiCycle Treasury "Clusters and Supernova with Hubble" project, and the Javalambre-PAU...
Narciso Benítez
17/11/2010 - 16:00
Cosmología fotométrica
Se ahondará en los conceptos fundamentales de los "redshift-fotométricos" y se discutirá el papel que desempeña este tipo de herramientas en la cosmología moderna.
Alberto Molino Benito - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
11/11/2010 - 13:00
A new sample of faint blazars
The available blazar samples were selected at relatively high limiting flux densities in the radio and X-ray band. Those samples have small sizes (30-50 objects) making it difficult to statistically derive parameters related to beaming effects. Moreover, the estimate of those parameters is based on bright and intrinsically luminous sources. A deeper, larger sample of blazars has been constructed by Perlman et al. (1998) and by Landt et al. (2001...
Franco Mantovani
04/11/2010 - 13:00
Mesospheric CO2 clouds on Mars: observations and study with a General Circulation Model
Mesospheric CO2 clouds have been recently observed on Mars, providing important information about the temperatures and winds at the mesosphere, an atmospheric region characterized by the scarcity of observational records. These clouds only appear at particular geographical locations, altitudes above the surface, and times of the year, posing interesting questions about the processes that are at the origin of these clouds. We use a computational...
Francisco González Galindo
02/11/2010 - 16:00
El puzle de la atmósfera marciana
Realizaremos una visión de la atmósfera de Marte desde las primeras interpretaciones al conocimiento cada vez más profundo desarrollado en las últimas décadas: desde su evolución, composición, perfil térmico, oscilaciones de masa y de temperatura, que fundamentalmente ha sido posible gracias a las misiones espaciales y al traslado de modelos teóricos ya testados en la atmó...
Javier Ruiz Madrona - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
28/10/2010 - 14:00
On the discovery of the Zeeman effect on the Sun and in the laboratory
The origin of the discoveries, both on the Sun and in the laboratory, of the action of a magnetic field on spectral lines, the so-called Zeeman effect, is discussed. The talk embraces the period from 1866, the first date of which the speaker is aware of observed evidences about the widening of spectral lines in sunspots (as compared to those formed in the photosphere), until 1908, the year in which the magnetic field in sunspots is definitely...
José Carlos del Toro Iniesta
21/10/2010 - 14:00
Umbral dots: clues to the internal structure of sunspots
Sunspots have been studied since the time of Galileo, but they still remain one of the most active research fields in solar physics. Especially, research on the fine structure of sunspots made great progress with the advent of the Hinode satellite and CRISP spectropolarimetry at the Swedish Solar Telescope on La Palma. Umbral dots (UDs) are tiny bright points observed in the umbra of sunspots. They are scientifically interesting because they...
Hiroko Watanabe
15/10/2010 - 14:00
The Euler Characteristic as a Measure of the Topology of Cosmic Reionization
After giving basic information about what and how we know about the epoch of reionization, I will very briefly introduce the cosmic reionization simulations which I am analyzing. Next, the concepts of topology and, in more detail, the Euler Characteristic are introduced. Only after providing the audience with this necessary background, I will present some results from the analysis of our cosmic reionization simulations.  
Martina M. Friedrich
08/10/2010 - 12:30
El Centro Astronómico Hispano-Alemán: futura instrumentación y operaciones
El Observatorio de Calar Alto cuenta en estos momentos con tres telescopios ópticos-infrarrojos y un conjunto de 11 instrumentos que cubren un gran rango de necesidades en distintos campos científicos, con una demanda desigual por parte de la comunidad astronómica. A partir del segundo semestre del 2010 se procederá a la apertura del archivo público del observatorio, optimizando la producción científica. Además, se están desarrollando dos...
David Barrado
30/09/2010 - 14:00
The Pipe Nebula: Primordial conditions of a quiescent molecular cloud
We present the results of a new deep, near-infrared survey of the essentially starless Pipe Nebula, combining data from ESO, Calar Alto, and SPITZER telescopes, and the 2MASS survey. We use this new high sensitivity data set to construct dust extinction maps with spatial resolutions one order of magnitude smaller that the local Jeans Length. Our maps allowed us to determine the structure of the cloud down to and below the scale of dense pre-...
Carlos Román Zúñiga
16/09/2010 - 14:00
Active Galactic Nuclei at parsec scales
We present a representative SED for low-luminosity AGNs, built from high-spatial resolution data for the LINERs and faint Seyferts in the sample. This distribution differs from those of bright Seyferts and Quasars, suggesting that the internal structure of AGNs appears to be largely determined by the amount of energy released by the central engine. On the other hand, we present a multiwavelength study of the nuclear star-formation (~2.5kpc x 2....
Juan Antonio Fernández Ontiveros
09/09/2010 - 14:00
GO-IRS: a new multi-object spectrograph for the GTC
GO-IRS stands for "GTC Optical Intermediate Resolution Spectrograph". It is the answer of a big team of over 100 experienced researchers and engineers from the University of Florida, China and Spain to the recent call for new instrumentation for the 10.4 m Gran Telescopio Canarias (GTC). The GO-IRS main facts are: 1000 MOS fibres in a 15 arcmin circular field of view; 4x400 IFU fibres in the central 2 arcmin; resolution powers of R=20k...
José Antonio Caballero
06/09/2010 - 14:00
Fundamental Constants in Time and Space
According to the standard model of particle physics, fundamental constants, at least their low-energy limits, should be independent of time and location. Many fundamental constants of physics and astronomy are well defined locally. However, this "constancy of constants'' may not necessarily hold over the largest spatial and temporal scales, which are inaccessible by geological or astronomical studies of nearby targets. Now, advances in...
Christian Henkel
06/09/2010 - 10/09/2010
Spanish Relativity Meeting 2010
Granada
21/07/2010 - 15:00
Nubes interestelares, formación estelar, y fractales
El medio interestelar tiene una estructura que es jerárquica y autosimilar, propiedades típicas de ciertos objetos geométricos llamados fractales. En esta charla (menos esotérica de lo que  parece) explicare como hemos estado usando el análisis fractal para estudiar las propiedades de las nubes interestelares. También hemos estado estudiando la distribución de estrellas en cúmulos...
Néstor Miguel Sánchez Doreste - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
15/07/2010 - 14:00
The Square Kilometer Array. Should we all wait until 2022?
The SKA, composed of several hundreds of 3 different types of antennas with separations up to 3000 km, and up to 200 square degrees FOV, can be considered as the largest, most sensitive, and most difficult radio telescope ever to be built. Some of the research areas where it will be able to provide fundamental answers include the dark era, when gas in galaxies was first turned in stars and the first black holes formed, star formation in nearby...
Lourdes Verdes-Montenegro
08/07/2010 - 14:00
Escalado de la variabilidad y la luminosidad en rayos X en fuentes ULXs
Las fuentes Ultra-luminosas en rayos X (ULXs, del inglés Ultra-luminous X-ray sources) pueden ser la población que conecta los agujeros negros de nuestra Galaxia (<1000 MSol) y los objetos supermasivos en el centro de las galaxias (1E+05-1E+08 MSol). Éstos son los denominados agujeros negros de masas intermedias (1000-100000 MSol). Sin embargo su naturaleza aún no está clara. Recientemente hemos investigado la relación entre la amplitud de la...
Omaira González Martín
02/07/2010 - 14:00
An Initial Mass Function for Individual Stars in Galactic Disks
The Initial Mass Function (IMF) has been derived by a variety of methods. Here we propose an IMF form (a Smoothed Two-Power Law psi_STPL) that approaches a power law at both low stellar masses (psi_STPL ~ m^(gamma)) and at high stellar masses (psi_STPL ~ m^(-Gamma)) with a turnover near the characteristic mass m_ch. The values of gamma and m_ch are derived from two integral constraints: i) the ratio of the number density of stars in the range m=...
Antonio Parravano
01/07/2010 - 14:00
Magnetic field configuration at the central region of our Galaxy
It has been long debated whether the magnetic field configuration at the central region of our Galaxy is toroidal or poloidal. Previous works that have addressed this question were mainly based on radio observations of non-thermal radio filaments, and sub-mm polarimetric observations of dense molecular clouds. I will present a result of a wide-field near-infrared polarimetric survey of the central 2 deg by 2deg region; these wavelengths trace...
Shogo Nishiyama
30/06/2010 - 15:00
¿Qué es una partícula?
Desde los inicios de la física, la idea de partícula ha jugado un papel fundamental en su formulación. Con la llegada de la mecánica cuántica, y más aun de la teoría cuántica de campos (la teoría cuántica que recoge además los postulados de la relatividad restringida), el concepto de partícula queda ligado indisolublemente al de onda. Sin embargo, ¿qu...
Por Luis Cortés Barbado - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
17/06/2010 - 14:00
Gamma Rays from the Relativistic Plasma Jets of Blazars
X-ray and gamma-ray flares are a common occurrence in blazars, active galactic nuclei with relativistic plasma jets that are pointing almost directly at us. This talk will present the results of a comprehensive multi-waveband monitoring program of blazars with gamma-ray flares observed by the Fermi Gamma-ray Space Telescope. The relative timing of the flares at different wavebands and the emergence of bright radio knots moving down the jet at...
Alan P. Marscher
09/06/2010 - 15:00
CGC: una Cámara de Gran Campo para el OSN
El Observatorio de Sierra Nevada (OSN) cuenta con dos telescopios principales de metro y medio (T150) y noventa centímetros (T90) de apertura. En la actualidad el T90 no dispone de ningún instrumento para obtener imágenes directas. El T150, por su parte, tiene acoplada de modo permanente una cámara CCD 2048 x 2048 que permite observar un campo de unos 8 minutos de arco, lo cual resulta demasiado pequeño para...
Miguel Abril Martí - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
27/05/2010 - 14:00
An overview of regional atmospheric phenomena on Mars
Tbd  
Aymeric Spiga
20/05/2010 - 14:00
2009 Año Internacional de la Astronomía: un año para recordar
Hemos dicho adiós al Año Internacional de la Astronomía (AIA-IYA2009). En España nos propusimos organizar un Año de la Astronomía con un nivel de excelencia acorde con la magnífica evolución que esta rama de la ciencia ha tenido en nuestro país en las últimas décadas y lo hemos conseguido. Las cifras hablan por sí solas: más de 3100 actividades organizadas por al menos 1300 entidades con la participación de miles de personas que han convertido...
Montserrat Villar Martín
19/05/2010 - 15:00
¿Para qué (me) puede servir un GRID (del CSIC)?
Desde hace unos años se está creando a nivel europeo una infraestructura de computación distribuida geográficamente (GRID). Este GRID permite solucionar problemas computacionalmente costosos o masivos y potencia la colaboración de científicos de diferentes lugares, ofreciendo las ventajas de un sistema distribuido frente a un sistema centralizado como los supercomputadores. El CSIC participa en esta...
Antonio García Hernández, José Sabater Montes y Susana Sánchez Expósito - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
13/05/2010 - 14:00
PLATO: The exoplanetary system explorer
I present a general overview of the PLAnetary Transits and Oscillations of stars (PLATO) space mission. PLATO was recently approved by ESA’s Science Programme Committee, together with Euclid and Solar Orbiter missions, to enter the so-called definition phase, i.e. the step required before the final decision is taken (only two missions will be implemented). To be launched in 2018, PLATO is a third generation mission, which will take...
Juan Carlos Suárez
06/05/2010 - 14:00
The IAA cosmic dust laboratory
Dust particles exist in a wide variety of scenarios ranging from the Earth's atmosphere to other planetary and cometary atmospheres in the Solar System, interplanetary medium, reflection nebulae, circumstellar disks, etc. Those dust particles play an important role in the radiative balance of the body under study. Light scattering properties of spherical particles can be easily computed from Lorenz-Mie theory. However, in the majority of the...
Olga Muñoz Gómez
29/04/2010 - 14:00
Molecular Gas and Star Formation in Local Early-Type Galaxies
The molecular gas content of local early-type galaxies is constrained and discussed in relation to their evolution. First, as part of the Atlas3D survey, we present the first complete, large (>250 objects), volume-limited survey of molecular gas in normal local early-type galaxies, obtained with the IRAM 30m telescope. In particular, we find a surprisingly high detection rate of 23%, independent of mass and environment, but dependent on the...
Martin Bureau
28/04/2010 - 15:00
MODELADO DE GALAXIAS CON ESPECTRO DE LINEAS DE EMISIÓN DEBIDO A FORMACIÓN ESTELAR
Generalmente se asume que el espectro de líneas de emisión de galaxias con formación estelar se puede modelizar mediante una única región HII. En este trabajo investigamos cuándo dicha aproximación es adecuada y cuándo el modelado se debe realizar mediante la emisión de un conjunto de diferentes regiones HII ionizadas por cúmulos de diversos tamaños. Con este fin...
Marcos Villaverde Aparicio - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
27/04/2010 - 15:00
Stellar cusps in gallactic nuclei
We will give a brief introduction into stellar cusps in Galactic nuclei or, more in general, around massive black holes. We will treat topics such as: What is a stellar cusp? How does it form? What does the presence or absence of a stellar cusp tell us about a galactic nucleus? Is there a stellar cusp around the black hole at the center of the Milky Way?
Pau Amaro-Seoane (AEI, Potsdam) and Rainer Schoedel (IAA, Granada) - Sala de Juntas del Instituto de Astrofísica de Andalucía (IAA-CSIC)
22/04/2010 - 14:00
Supermassive Black Holes
Tbd  
Dr. Elena dalla Bontá

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