Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Galaxy And Mass Assembly (GAMA): bivariate functions of Ha star-forming galaxies

Gunawardhana, MLP and Hopkins, AM and Taylor, EN and Bland-Hawthorn, J and Norberg, P and Baldry, IK and Loveday, J and Owers, MS and Wilkins, SM and Colless, M and Brown, MJI and Driver, SP and Alpaslan, M and Brough, S and Cluver, M and Croom, S and Kelvin, L and Lara-Lopez, MA and Liske, J and 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

This is the latest version of this item.

[img] Text
1411.2557v1.pdf - Accepted Version

Download (10MB)

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
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: 26 Oct 2015 15:07
DOI or Identification number: 10.1093/mnras/stu2232
URI: http://researchonline.ljmu.ac.uk/id/eprint/1875

Available Versions of this Item

Actions (login required)

View Item View Item