2013A&A...555L...8B


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.19CET07:26:47

2013A&A...555L...8B - Astronomy and Astrophysics, volume 555, L8-8 (2013/7-1)

Molecular gas mass functions of normal star-forming galaxies since z ∼ 3.

BERTA S., LUTZ D., NORDON R., GENZEL R., MAGNELLI B., POPESSO P., ROSARIO D., SAINTONGE A., WUYTS S. and TACCONI L.J.

Abstract (from CDS):

We used deep far-infrared data from the PEP/GOODS-Herschel surveys and restframe ultraviolet photometry to study the evolution of the molecular gas mass function of normal star-forming galaxies. Computing the molecular gas mass, Mmol, by scaling star formation rates through depletion timescales, or combining infrared (IR) luminosity and obscuration properties as described in the literature, we obtained Mmol for roughly 700, z=0.2-3.0 galaxies near the star-forming main sequence. The number density of galaxies follows a Schechter function of Mmol. The characteristic mass M* is found to strongly evolve up to z∼1 and then flatten at earlier epochs, resembling the IR luminosity evolution of similar objects. At z∼1, our result is supported by an estimate based on the stellar mass function of star-forming galaxies and gas fraction scalings from the PHIBSS survey. We compared our measurements with results from current models, finding better agreement with those that are treating star formation laws directly rather than in post-processing. Integrating the mass function, we studied the evolution of the Mmol density and its density parameter Ωmol.

Abstract Copyright:

Journal keyword(s): galaxies: luminosity function, mass function - galaxies: statistics - galaxies: evolution - galaxies: star formation - infrared: galaxies

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 999 1
2 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 876 1

    Equat.    Gal    SGal    Ecl

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2019.11.19-07:26:47

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