TY  - GEN
AV  - public
TI  - Investigation of the stellar population in galaxies since z=2 by NIR photometry
Y1  - 2009///
ID  - heidok9529
KW  - galaxy evolution 
KW  -  NIR photometry
A1  - Nicol, Marie-Hélène
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/9529/
N2  - This study investigates galaxy evolution in the last 10 Gyr of the age of the Universe. To access the high redshift Universe deep near infrared observations have been carried out in the frame of the COMBO-17+4 (Classifying Objects by Medium-Band Observations) survey. Photometric redshifts, rest-frame SEDs and masses have been obtained for 14286 galaxies down to an observed magnitude H=21.7 mag in 0.2 square degree of the A901-field. The red evolved and the blue star-forming galaxy populations distributions have been followed through cosmic time. An evolving colour-magnitude relation as a function of lookback time has been derived in order to separate the red galaxies from the blue ones. Our results show that the galaxy bimodality persist out to z=1.6.The luminosity and the mass function for the red and the blue galaxy populations has been investigated. Our results show that the characteristic magnitude M* for both galaxy population have considerably dimmed between 2>z>0.2. The massive end of the mass function is dominated by the red galaxies at z<1, whereas above z=1 red evolved and blue star-forming galaxy populations contribute in similar numbers.   
ER  -