J/MNRAS/413/971 Galaxy And Mass Assembly (GAMA) DR1 (Driver+, 2011)
Galaxy And Mass Assembly (GAMA): survey diagnostics and core data release.
Driver S.P., Hill D.T., Kelvin L.S., Robotham A.S.G., Liske J., Norberg P.,
Baldry I.K., Bamford S.P., Hopkins A.M., Loveday J., Peacock J.A.,
Andrae E., Bland-Hawthorn J., Brough S., Brown M.J.I., Cameron E.,
Ching J.H.Y., Colless M., Conselice C.J., Croom S.M., Cross N.J.G.,
De Propris R., Dye S., Drinkwater M.J., Ellis S., Graham A.W.,
Grootes M.W., Gunawardhana M., Jones D.H., Van Kampen E., Maraston C.,
Nichol R.C., Parkinson H.R., Phillipps S., Pimbblet K., Popescu C.C.,
Prescott M., Roseboom I.G., Sadler E.M., Sansom A.E., Sharp R.G.,
Smith D.J.B., Taylor E., Thomas D., Tuffs R.J., Wijesinghe D., Dunne L.,
Frenk C.S., Jarvis M.J., Madore B.F., Meyer M.J., Seibert M.,
Staveley-Smith L., Sutherland W.J., Warren S.J.
<Mon. Not. R. Astron. Soc., 413, 971-995 (2011)>
=2011MNRAS.413..971D 2011MNRAS.413..971D
ADC_Keywords: Surveys ; Galaxy catalogs ; Redshifts ; Photometry, SDSS ;
Photometry, infrared
Keywords: surveys - galaxies: distances and redshifts -
galaxies: fundamental parameters - galaxies: general -
galaxies: statistics
Abstract:
The Galaxy and Mass Assembly (GAMA) survey has been operating since
2008 February on the 3.9-m Anglo-Australian Telescope using the
AAOmega fibre-fed spectrograph facility to acquire spectra with a
resolution of R∼1300 for 120862 Sloan Digital Sky Survey selected
galaxies. The target catalogue constitutes three contiguous equatorial
regions centred at 9h (G09), 12h (G12) and 14.5h (G15) each of
12x4deg2 to limiting fluxes of rpet<19.4, rpet<19.8 and
rpet<19.4 mag, respectively (and additional limits at other
wavelengths). Spectra and reliable redshifts have been acquired for
over 98 per cent of the galaxies within these limits. Here we present
the survey footprint, progression, data reduction, redshifting,
re-redshifting, an assessment of data quality after 3yr, additional
image analysis products (including ugrizYJHK photometry, Sersic
profiles and photometric redshifts), observing mask and construction
of our core survey catalogue (GamaCore). From this we create three
science-ready catalogues: GamaCoreDR1 for public release, which
includes data acquired during year 1 of operations within specified
magnitude limits (2008 February to April); GamaCoreMainSurvey
containing all data above our survey limits for use by the GAMA Team
and collaborators; and GamaCoreAtlasSV containing year 1, 2 and 3 data
matched to Herschel-ATLAS science demonstration data. These catalogues
along with the associated spectra, stamps and profiles can be accessed
via the GAMA website: http://www.gama-survey.org/
Description:
All GAMA 2dF pointings (tiles) were observed during dark or grey time
with exposure times mostly ranging from 3000 to 5000s (in three to
five exposures) depending on seeing and sky brightness. Observations
were generally conducted at an hour angle of less than 2h (the median
zenith distance of the observations is 35°) and with the
Atmospheric Dispersion Corrector engaged. We used the 580V and 385R
gratings with central wavelengths of 4800 and 7250Å in the blue
and red arms, respectively, separated by a 5700Å dichroic. This
set-up yielded a continuous wavelength coverage of 3720-8850Å at a
resolution of ∼3.5Å (in the blue channel) and ∼5.5Å (in the red
channel).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
gamacore.dat 614 114441 Galaxy catalogue containing all SDSS galaxies
within the GAMA regions, including GAMA-matched
photometry and first year redshifts, GamaCoreDR1
extra.dat 614 15821 Galaxy catalogue containing the same columns as
GamaCoreDR1, for all objects that are not
within the r band survey limit, GamaCoreExtraDR1
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See also:
http://www.gama-survey.org/dr1/YR1public.php : GAMA Data release 1 Page
II/282 : The SDSS Photometric Catalog, DR 6 (Adelman-McCarthy+, 2007)
VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004)
VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS, 1998-2003)
VII/259 : 6dF galaxy survey final redshift release (Jones+, 2009)
J/MNRAS/372/425 : 2dF-SDSS Luminous Red Galaxy Survey, 2SLAQ (Cannon+, 2006)
J/PASP/111/438 : Updated Zwicky catalog (UZC) (Falco+, 1999)
J/MNRAS/392/19 : The 2dF-SDSS QSO survey (Croom+, 2009)
Byte-by-byte Description of file: gamacore.dat extra.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [GAMA]
5- 23 A19 ---- GAMA-IAU Unique IAU identifier (JHHMMSS.ss+DDMMSS.s)
25- 31 I7 --- GAMA GAMA identification number
33- 50 A18 --- SDSS-ID SDSS-DR6 identification number (objID)
52- 68 F17.13 deg RAdeg Right ascension from SDSS-DR6 (J2000)
70- 91 E22.18 deg DEdeg Declination from SDSS-DR6 (J2000)
93-108 F16.13 mag rPmag Extinction-corrected r-band Petrosian flux
derived from SDSS DR6 in AB mag (r_PETRO)
110-124 E15.10 --- zh ?=9999 Heliocentric redshift (Z_HELIO)
(-2=embargoed, =-0.9 if q_zh=1)
134 I1 --- q_zh [0/5] Confidence on redshift (z_QUALITY) (1)
142-143 I2 --- r_zh [0/10] Origin of redshift (z_SOURCE) (2)
145-152 I8 "YYYYDDMM" Date ?=9999 Date of observation if z_SOURCE=5
(i.e. GAMA), otherwise 9999 (Z_DATE)
154-160 F7.2 --- zS/N ?=9999 Mean S/N of spectrum if z_SOURCE=5
(i.e. GAMA), otherwise 9999 (Z_SN)
162-179 A18 --- ZID Filename of best available spectrum (Z_ID)
181-182 A2 --- ph [rd/sd] Photometric source (PHOT_SOURCE) (3)
193-210 F18.13 mag umag ?=9999 u-band Kron AB magnitude (u_KRON) (4)
212-229 F18.13 mag gmag ?=9999 g-band Kron AB magnitude (g_KRON) (4)
231-248 F18.13 mag rmag ?=9999 r-band Kron AB magnitude (r_KRON) (4)
250-268 F19.14 mag imag ?=9999 u-band Kron AB magnitude (i_KRON) (4)
270-288 F19.14 mag zmag ?=9999 z-band Kron AB magnitude (z_KRON) (4)
290-308 F19.14 mag Ymag ?=9999 Y-band Kron AB magnitude (Y_KRON) (4)
310-328 F19.14 mag Jmag ?=9999 J-band Kron AB magnitude (J_KRON) (4)
330-348 F19.14 mag Hmag ?=9999 H-band Kron AB magnitude (H_KRON) (4)
350-368 F19.14 mag Kmag ?=9999 K-band Kron AB magnitude (K_KRON) (4)
370-391 F22.17 mag e_umag ?=9999 rms uncertainty on umag (uKRONERR)
393-414 E22.17 mag e_gmag ?=9999 rms uncertainty on gmag (gKRONERR)
416-437 E22.17 mag e_rmag ?=9999 rms uncertainty on rmag (rKRONERR)
439-460 E22.17 mag e_imag ?=9999 rms uncertainty on imag (iKRONERR)
462-483 E22.17 mag e_zmag ?=9999 rms uncertainty on zmag (zKRONERR)
485-506 E22.17 mag e_Ymag ?=9999 rms uncertainty on Ymag (YKRONERR)
508-529 E22.17 mag e_Jmag ?=9999 rms uncertainty on Jmag (JKRONERR)
531-552 E22.17 mag e_Hmag ?=9999 rms uncertainty on Hmag (HKRONERR)
554-575 E22.17 mag e_Kmag ?=9999 rms uncertainty on Kmag (KKRONERR)
577-594 F18.16 mag rext ?=9999 Galactic magnitude extinction in r
band (EXTINCTION_r)
596-614 F19.14 mag rSmag ?=9999 r-band Sersic magnitude truncated at
10 half light radii (rSERSMAG_10RE)
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Note (1): Confidence on redshift as follows:
4 = definite (nQ=4)
3 = reliable (nQ=3)
2 = uncertain (nQ=2)
1 = unknown (nQ=1)
99 = not observed (nQ=99)
Note (2): Origin of redshift as follows:
1 = SDSS DR6, Adelman-McCarthy et al., 2008, Cat. II/282
2 = 2dFGRS, Colless et al., 2001, Cat. VII/250
3 = MGC, Driver et al., 2005MNRAS.360...81D 2005MNRAS.360...81D
4 = 2SLAQ-LRG, Canon et al., 2006, Cat. J/MNRAS/372/425
5 = GAMA, this paper
6 = 6dFGS, Jones et al., 2009, Cat. VII/259
7 = UZC, Falco et al., 1999, Cat. J/PASP/111/438
8 = 2QZ, Croom et al., 2004, Cat. VII/241
9 = 2SLAQ-QSO, Croom et al., 2009, Cat. J/MNRAS/392/19
10 = NED, http://ned.ipac.caltech.edu
Note (3): rd = r-band defined, sd = self-defined, see Hill et al.,
2011MNRAS.412..765H 2011MNRAS.412..765H
Note (4): all magnitudes have been extinction corrected and placed onto
the true AB scale.
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History:
Copied at http://www.gama-survey.org/dr1/YR1public.php
(End) Patricia Vannier [CDS] 16-Sep-2012