Star Formation Activity in Balmer Break Galaxies at z<1.5

JORGE DIAZ TELLO; CARLOS DONZELLI; NELSON PADILLA; NAOFUMI FUJISHIRO

Santiago

Workshop; Deconstructing Galaxies: Structure and Morphology in the Era of Large Surveys; 2013

Observatorio Europeo Austral

We derived star formation rates (SFR) and investigated the evolution of the SFR-stellar mass , specific SFR (SSFR)-stellar mass and SSFR-color relations as function of the redshift. The studied sample composed of star-forming and post-starburst galaxies span a redshift range from 0.094 to 1.47, and they have stellar masses from 10^{8}-10^{12} M_{sun}. We observe that for a given mass or color, high-redshift galaxies have higher SFR and SSFR values than local galaxies. A break in the star-forming sequence appears when post-starburst galaxies are included, revealing an increasing trend with redshift for the SFR/SSFR values. These results let us hyphotesize about a characteristic mass and color at which the red sequence could mostly be formed at a given redshift.