Galaxy And Mass Assembly (GAMA): the G02 field, Herschel-ATLAS target selection and Data Release 3
Baldry et al. 2018, published in MNRAS, Vol. 474, pp. 3875-3888 (links:
ADS,
DOI)
Abstract
We describe data release 3 (DR3) of the Galaxy And Mass Assembly (GAMA)
survey. The GAMA survey is a spectroscopic redshift and multi-wavelength
photometric survey in three equatorial regions each of 60.0 deg2 (G09, G12,
G15), and two southern regions of 55.7 deg2 (G02) and 50.6 deg2 (G23). DR3
consists of: the first release of data covering the G02 region and of data on
H-ATLAS sources in the equatorial regions; and updates to data on sources
released in DR2. DR3 includes 154809 sources with secure redshifts across
four regions. A subset of the G02 region is 95.5% redshift complete to r<19.8
over an area of 19.5 deg2, with 20086 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%),
and spectra for about 75% of H-ATLAS filler targets were also obtained. This
filler sample extends spectroscopic redshifts, for probable optical
counterparts to H-ATLAS sub-mm sources, to 0.8 mag deeper (r<20.6) than the
GAMA main survey. There are 25814 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/).
Data:
GAMA DR3.
H-ATLAS-GAMA sample
as used in Figures 9-13. The selection is m250<12.72,
mr<20.6, match-reliability R>0.8, star-galaxy separation (eq. 1),
and reduced area to match selection of filler targets (within blue solid line of Fig. 8).
Bourne et al. 2016
describe the H-ATLAS DR1 used for this sample.
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