Systems of galaxies in the Sloan Digital Sky Survey: the fundamental plane

DIAZ, EUGENIA & MURIEL, HERNAN

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Año: 2005 vol. 364 p. 1299 - 1303

0035-8711

We analyse a subsample of the galaxy groups recently obtained by Merchán & Zandivarez 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 LR~R1.3σ0.7. We do not find differences when different dynamical states or redshift ranges are analysed. We find that the mass-to-light ratio increases with group mass as M/LR~M0.36