Systems of Galaxies in the SDSS: the fundamental plane

Details Systems of Galaxies in the SDSS: the fundamental plane Systems of Galaxies in the SDSS: the fundamental plane

2005-09-27

arxiv.org/abs/astro-ph/0509824v1

Mon.Not.Roy.Astron.Soc.364:1299-1303,2005

Astronomy and Astrophysics

Astrophysics

5 pages, 5 figures, 1 table. Accepted to be published in MNRAS

Scientific paper

10.1111/j.1365-2966.2005.09650.x

We analyse a subsample of the galaxy groups obtained by Merch\'an & Zandivarez (2005) from the SDSS DR3 to study the fundamental plane and the mass to light ratio of galaxy groups. We find a fundamental plane given by $L_R \propto R^{1.3} \sigma^{0.7}$. We do not find differences when different dynamical sates or redshift ranges are analysed. We find that the mass to light ratio increases with group mass as $M/L_R \propto M^{0.36}$.

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