Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-07-23
Astron.Astrophys. 395 (2002) 443-464
Astronomy and Astrophysics
Astrophysics
23 pages, 19 figures. Accepted for publication in A&A. No changes
Scientific paper
10.1051/0004-6361:20021286
We have developed a Monte Carlo method to compute the luminosity function of galaxies, based on photometric redshifts, which takes into account the non-gaussianity of the probability functions, and the presence of degenerate solutions in redshift. In this paper we describe the method and the mock tests performed to check its reliability. The NIR luminosity functions and the redshift distributions are determined for near infrared subsamples on the HDF-N and HDF-S. The results on the evolution of the NIR LF, the stellar mass function, and the luminosity density, are presented and discussed in view of the implications for the galaxy formation models. The main results are the lack of substantial evolution of the bright end of the NIR LF and the absence of decline of the luminosity density up to a redshift z ~ 2, implying that most of the stellar population in massive galaxies was already in place at such redshift.
Bolzonella Micol
Maccagni Dario
Pello' Roser
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