BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Instituto de Astrofísica de Andalucía - ECPv6.15.18//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://www.iaa.csic.es
X-WR-CALDESC:Eventos para Instituto de Astrofísica de Andalucía
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Paris
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20230326T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20231029T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20240331T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20241027T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20250330T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20251026T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241107T123000
DTEND;TZID=Europe/Paris:20241107T133000
DTSTAMP:20260414T053032
CREATED:20241023T085356Z
LAST-MODIFIED:20250912T080219Z
UID:22352-1730982600-1730986200@www.iaa.csic.es
SUMMARY:SO Colloquium: The tidal arms of open star clusters are much longer than thought\, but more difficult to find
DESCRIPTION:The tidal arms of stellar clusters are an important tool for studying the clusters’ birth conditions\, their evolution\, coupling\, and interaction with the Galactic potential. They also help understand how field stars populate the Milky Way. Thanks to Gaia\, much progress has been accomplished in finding the tidal arms of open clusters. I will show here that such arms are much longer than previously observed\, and that their identification requires not only a sophisticated analysis of the Gaia catalogue\, using the convergent point method and clustering algorithms\, but ideally\, the use of N-body simulations and the new compact convergent point method. I will highlight recent results about the arms of several open clusters\, which extend over several hundreds of parsecs. \nFecha: 07/11/2024 – 12:30Conferenciante: Dr. Henri BoffinFiliación: European Southern Observatory
URL:https://www.iaa.csic.es/evento/so-colloquium-the-tidal-arms-of-open-star-clusters-are-much-longer-than-thought-but-more-difficult-to-find/
LOCATION:IAA – CSIC\, Glorieta de la Astronomía\, Granada\, España
CATEGORIES:SO Colloquium
ATTACH;FMTTYPE=image/png:https://www.iaa.csic.es/wp-content/uploads/2025/07/SO-COLLOQUIUM.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241128T123000
DTEND;TZID=Europe/Paris:20241128T133000
DTSTAMP:20260414T053032
CREATED:20241119T084404Z
LAST-MODIFIED:20250912T080215Z
UID:22440-1732797000-1732800600@www.iaa.csic.es
SUMMARY:SO Colloquium: Cosmic chemical evolution: here\, there\, and everywhere
DESCRIPTION:Metals play a very important role in star formation and stellar evolution. Amongst other things they control the cooling of the interstellar gas\, thus allowing the formation of stars; they affect the radiation transport\, through the opacities involved in the different microscopic processes; and they have the most important role in the dust formation and in the mass loss from stars. Metals are formed inside stars. Therefore\, it is expected that metal enrichment in the universe should start soon after the formation of the first massive stars that\, after a very short life\, would return to the interstellar medium (ISM) in explosive events newly synthesised chemical elements\, heavier than the primordial hydrogen and helium. It is thought that this ejecta\, at some point mixed with the surrounding gas\, would help to its cooling and propitiate the appearance of a new generation of stars\, hence giving rise to the cycle of cosmic chemical evolution. All this wealth of detail is somehow imprinted in the distribution of abundances in galaxies. The absolute quantities of metals a galaxy (or a region of a galaxy) possesses\, the relative abundances of the different elements\, and their spatial distribution in a given galaxy are important constraints for the verification of our models and scenarios of the formation and evolution of galaxies. \nThere are two ways of handling and exploiting this information. One is to derive abundances in galaxies “in situ”\, i. e. in galaxies at their different redshifts. In that way\, we can observe the gas abundances at the time of the emission of radiation and thus obtain the value of the mean abundances of the gas at a given epoch. The other one is to derive the gas abundances at the present epoc \, that is\, observing galaxies at redshift zero and then use chemical evolution models to infer their abundances at previous epochs. \nEventually both approaches must converge in a single galaxy formation and evolution scenario. Once that convergence is achieved\, the models can be extrapolated back to even earlier times and predictions can be made which can be contrasted with planned observations. \nFecha: 28/11/2024 – 12:30Conferenciante: Profesora Ángeles DíazFiliación: Universidad Autónoma de Madrid\, Madrid\, España
URL:https://www.iaa.csic.es/evento/so-colloquium-cosmic-chemical-evolution-here-there-and-everywhere/
LOCATION:IAA – CSIC\, Glorieta de la Astronomía\, Granada\, España
CATEGORIES:SO Colloquium
ATTACH;FMTTYPE=image/png:https://www.iaa.csic.es/wp-content/uploads/2025/07/SO-COLLOQUIUM.png
END:VEVENT
END:VCALENDAR