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Gunawardhana, MLP, Hopkins, AM, Taylor, EN, Bland-Hawthorn, J, Norberg, P, Baldry, IK, Loveday, J, Owers, MS, Wilkins, SM, Colless, M, Brown, MJI, Driver, SP, Alpaslan, M, Brough, S, Cluver, M, Croom, S, Kelvin, L, Lara-Lopez, MA, Liske, J, Lopez-Sanchez, AR and Robotham, ASG (2015) Galaxy And Mass Assembly (GAMA): bivariate functions of Ha star-forming galaxies. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 447 (1). pp. 875-901. ISSN 0035-8711
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Abstract
We present bivariate luminosity and stellar mass functions of Hα star-forming galaxies drawn from the Galaxy And Mass Assembly (GAMA) survey. While optically deep spectroscopic observations of GAMA over a wide sky area enable the detection of a large number of 0.001 < SFRHα (M� yr−1) < 100 galaxies, the requirement for an Hα detection in targets selected from an r-band magnitude-limited survey leads to an incompleteness due to missing optically faint star-forming galaxies. Using z < 0.1 bivariate distributions as a reference we model the higher-z distributions, thereby approximating a correction for the missing optically faint star-forming galaxies to the local star formation rate (SFR) andMdensities. Furthermore, we obtain the r-band luminosity functions (LFs) and stellar mass functions of Hα star-forming galaxies from the bivariate LFs.As our sample is selected on the basis of detectedHα emission, a direct tracer of ongoing star formation, this sample represents a true star-forming galaxy sample, and is drawn from both photometrically classified blue and red subpopulations, though mostly from the blue population. On average 20–30 per cent of red galaxies at all stellar masses are star forming, implying that these galaxies may be dusty star-forming systems.
| Item Type: | Article |
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| Additional Information: | This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record "Galaxy And Mass Assembly (GAMA): bivariate functions of Ha star-forming galaxies", MNRAS, 447(1), pp.875-901 is available online at: http://dx.doi.org/10.1093/mnras/stu2232 |
| Uncontrolled Keywords: | 0201 Astronomical And Space Sciences |
| Subjects: | Q Science > QB Astronomy |
| Divisions: | Astrophysics Research Institute |
| Publisher: | OXFORD UNIV PRESS |
| Related URLs: | |
| Date Deposited: | 26 Oct 2015 15:07 |
| Last Modified: | 04 Sep 2021 14:03 |
| DOI or ID number: | 10.1093/mnras/stu2232 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/1875 |
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Galaxy And Mass Assembly (GAMA): bivariate functions of Ha star-forming galaxies. (deposited 02 Jul 2015 08:32)
- Galaxy And Mass Assembly (GAMA): bivariate functions of Ha star-forming galaxies. (deposited 26 Oct 2015 15:07) [Currently Displayed]
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