Integral Field Spectroscopy of Green Peas (I): Disentangling disk-like, turbulence and strong outflow kinematics in SDSSJ083843.63+385350.5

DOI: 
10.1093/mnras/stz2230
Publication date: 
01/08/2019
Main author: 
Bosch, G.
IAA authors: 
Vílchez, J. M.;Pérez-Montero, E.
Authors: 
Bosch, G.;Hägele, G. F.;Amorín, R.;Firpo, V.;Cardaci, M. V.;Vílchez, J. M.;Pérez-Montero, E.;Papaderos, P.;Dors, O. L.;Krabbe, A. C.;Campuzano-Castro, F.
Journal: 
Monthly Notices of the Royal Astronomical Society
Refereed: 
Yes
Publication type: 
Article
Pages: 
1787-1796
Abstract: 
Integral Field Spectroscopy (IFS) is well known for providing detailed insight of extended sources thanks to the possibility of handling space resolved spectroscopic information. Simple and straightforward analysis such as single line fitting yield interesting results, although it might miss a more complete picture in many cases. Violent star forming regions, such as starburst galaxies, display very complex emission line profiles due to multiple kinematic components superposed in the line of sight. We perform a spatially resolved kinematical study of a single Green Pea (GP) galaxy, SDSSJ083843.63+385350.5, using a new method for analyzing Integral Field Unit (IFU) observations of emission line spectra. The method considers the presence of multiple components in the emission-line profiles and makes use of a statistical indicator to determine the meaningful number of components to fit the observed profiles. We are able to identify three distinct kinematic features throughout the field and discuss their link with a rotating component, a strong outflow and a turbulent mixing layer. We also derive an updated star formation rate for SDSS J0838 and discuss the link between the observed signatures of a large scale outflow and of the Lyman continuum (LyC) leakage detected in GP galaxies.
Database: 
ADS
SCOPUS
URL: 
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075162321&doi=10.1093%2fmnras%2fstz2230&partnerID=40&md5=523e2dbe9f40d56c59a934c27082a1b7
ADS Bibcode: 
2019MNRAS.489.1787B
Keywords: 
galaxies: starburst;galaxies: kinematics and dynamics;techniques: imaging spectroscopy;galaxies: individual (SDSSJ083843.63+385350.5);Astrophysics - Astrophysics of Galaxies;Astrophysics - Instrumentation and Methods for Astrophysics