Galaxy And Mass Assembly: the G02 field, Herschel–ATLAS target selection and data release 3. Issue 3 (24th November 2017)

• Record Type: Journal Article
• Authors: Baldry, I K; Liske, J; Brown, M J I; Robotham, A S G; Driver, S P; Dunne, L; Alpaslan, M; Brough, S; Cluver, M E; Eardley, E; Farrow, D J; Heymans, C; Hildebrandt, H; Hopkins, A M; Kelvin, L S; Loveday, J; Moffett, A J; Norberg, P; Owers, M S; Taylor, E N; Wright, A H; Bamford, S P; Bland-Hawthorn, J; Bourne, N; Bremer, M N; Colless, M; Conselice, C J; Croom, S M; Davies, L J M; Foster, C; Grootes, M W; Holwerda, B W; Jones, D H; Kafle, P R; Kuijken, K; Lara-Lopez, M A; López-Sánchez, Á R; Meyer, M J; Phillipps, S; Sutherland, W J; van Kampen, E; Wilkins, S M;
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 474:Issue 3(2018)
• Page Start: 3875
• Page End: 3888
• Publication Date: 2017-11-24
• Subjects: catalogues -- surveys -- galaxies: distances and redshifts -- galaxies: photometry; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/stx3042
• Languages: English
• ISSNs: 0035-8711

Abstract

Abstract: We describe data release 3 (DR3) of the Galaxy And Mass Assembly (GAMA) survey. The GAMA survey is a spectroscopic redshift and multiwavelength photometric survey in three equatorial regions each of 60.0 deg 2 (G09, G12, and G15), and two southern regions of 55.7 deg 2 (G02) and 50.6 deg 2 (G23). DR3 consists of: the first release of data covering the G02 region and of data on H-ATLAS (Herschel – Astrophysical Terahertz Large Area Survey) sources in the equatorial regions; and updates to data on sources released in DR2. DR3 includes 154 809 sources with secure redshifts across four regions. A subset of the G02 region is 95.5 per cent redshift complete to r < 19.8 mag over an area of 19.5 deg 2, with 20 086 galaxy redshifts, that overlaps substantially with the XXL survey (X-ray) and VIPERS (redshift survey). In the equatorial regions, the main survey has even higher completeness (98.5 per cent), and spectra for about 75 per cent of H-ATLAS filler targets were also obtained. This filler sample extends spectroscopic redshifts, for probable optical counterparts to H-ATLAS submillimetre sources, to 0.8 mag deeper ( r < 20.6 mag) than the GAMA main survey. There are 25 814 galaxy redshifts for H-ATLAS sources from the GAMA main or filler surveys. GAMA DR3 is available at the survey website (www.gama-survey.org/dr3/ ).