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NBursts: Simultaneous Extraction of Internal Kinematics and Parametrized SFH from Integrated Light Spectra

Published online by Cambridge University Press:  01 December 2006

Igor Chilingarian ,
Philippe Prugniel ,
Olga Sil'chenko  and
Mina Koleva
Igor Chilingarian*
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 13 Universitetsky prospect, Moscow, 119992, Russia Centre de Recherche Astronomique de Lyon, Observatoire de Lyon, 9 Av. Charles André, Saint-Genis Laval, F-69561, France; CNRS, UMR 5574 Observatoire de Paris, LERMA, 61 Ave. de l'Observatoire, Paris, 75014, France
Philippe Prugniel
Affiliation:
Centre de Recherche Astronomique de Lyon, Observatoire de Lyon, 9 Av. Charles André, Saint-Genis Laval, F-69561, France; CNRS, UMR 5574 Observatoire de Paris-Meudon, GEPI, 9 pl. Jules Janssen, Meudon, 92195, France
Olga Sil'chenko
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 13 Universitetsky prospect, Moscow, 119992, Russia
Mina Koleva
Affiliation:
Centre de Recherche Astronomique de Lyon, Observatoire de Lyon, 9 Av. Charles André, Saint-Genis Laval, F-69561, France; CNRS, UMR 5574 Department of Astronomy, St. Kliment Ohridski University of Sofia, 5 James Bourchier Blvd., BG-1164 Sofia, Bulgaria
*
† e-mail: chil@sai.msu.su
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Abstract

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We present a novel approach for simultaneous extraction of stellar population parameters and internal kinematics from the spectra integrated along a line of sight. We fit a template spectrum into an observed one in a pixel space using a non-linear χ2 minimization in the multidimensional parameter space, including characteristics of the line-of-sight velocity distribution (LOSVD) and parametrized star formation history (SFH). Our technique has been applied to IFU and multi-object spectroscopy of low-luminosity early type galaxies.

Keywords

techniques: spectroscopicmethods: data analysisgalaxies: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 175 - 176
Copyright
Copyright © International Astronomical Union 2007

References

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