Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 400, Issue 1, Pages 429-450Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2009.15474.x
Keywords
methods: statistical; galaxies: evolution; galaxies: luminosity function; mass function
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Funding
- Fundacion Andes
- NASA [LTSA NNG04GE12G]
- National Science Foundation [AST-0807570]
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [0807570] Funding Source: National Science Foundation
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We present a new maximum likelihood method for the calculation of galaxy luminosity functions (LFs) from multiband photometric surveys without spectroscopic data. The method evaluates the likelihood of a trial LF by directly comparing the predicted distribution of fluxes in a multidimensional photometric space to the observations, and thus does not require the intermediate step of calculating photometric redshifts. We apply this algorithm to similar to 27 000 galaxies with m(R) < 25 in MUSYC-ECDFS, with a focus on recovering the LF of field galaxies at z < 1.2. Our deepest LFs reach M-r approximate to -14 and show that the field galaxy LF deviates from a Schechter function, exhibiting a steep upturn at intermediate magnitudes that is due to galaxies of late spectral types.
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