Multi-component parametric inversion of galaxy kinematics and stellar populations using full spectral fitting

Details Multi-component parametric inversion of galaxy kinematics and stellar populations using full spectral fitting Multi-component parametric inversion of galaxy kinematics and stellar populations using full spectral fitting

2011-11-24

arxiv.org/abs/1111.5822v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

3 pages, 2 figures; to appear in the proceedings of "The Spectral Energy Distribution of Galaxies", Preston, UK, 5-9 September

Scientific paper

The stellar line-of-sight velocity distribution (LOSVD) can be strongly asymmetric in regions where the light contributions of both disc and bulge in spiral and lenticular galaxies are comparable. Existing techniques for the stellar kinematics analysis do not take into account the difference of disc and bulge stellar populations. Here we present a novel approach to the analysis of stellar kinematics and stellar populations. We use a two-component model of spectra where different stellar population components are convolved with pure Gaussian LOSVDs. For this model we present Monte-Carlo simulations demonstrating degeneracies between the parameters.

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