II/371 The Dark Energy Survey (DES): Data Release 2 (Abbott+, 2021)
The Dark Energy Survey Data Release 2.
Abbott T.M.C., Adamow M., Aguena M., Allam S., Amon A., Annis J., Avila S.,
Bacon D., Banerji M., Bechtol K., Becker M.R., Bernstein G.M., Bertin E.,
Bhargava S., Bridle S.L., Brooks D., Burke D.L., Carnero Rosell A.,
Carrasco Kind M., Carretero J., Castander F.J., Cawthon R., Chang C.,
Choi A., Conselice C., Costanzi M., Crocce M., da Costa L.N., Davis T.M.,
De Vicente J., Derose J., Desai S., Diehl H.T., Dietrich J.P.,
Drlica-Wagner A., Eckert K., Elvin-Poole J., Everett S., Evrard A.E.,
Ferrero I., Ferte A., Flaugher B., Fosalba P., Friedel D., Frieman J.,
Garcia-Bellido J., Gaztanaga E., Gelman L., Gerdes D.W., Giannantonio T.,
Gill M.S.S., Gruen D., Gruendl R.A., Gschwend J., Gutierrez G.,
Hartley W.G., Hinton S.R., Hollowood D.L., Honscheid K., Huterer D.,
James D.J., Jeltema T., Johnson M.D., Kent S., Kron R., Kuehn K.,
Kuropatkin N., Lahav O., Li T.S., Lidman C., Lin H., MacCrann N.,
Maia M.A.G., Manning T.A., Maloney J.D., March M., Marshall J.L.,
Martini P., Melchior P., Menanteau F., Miquel R., Morgan R., Myles J.,
Neilsen E., Ogando R.L.C., Palmese A., Paz-Chinchon F., Petravick D.,
Pieres A., Plazas A.A., Pond C., Rodriguez-Monroy M., Romer A.K.,
Roodman A., Rykoff E.S., Sako M., Sanchez E., Santiago B., Scarpine V.,
Serrano S., Sevilla-Noarbe I., Smith J.A., Smith M., Soares-Santos M.,
Suchyta E., Swanson M.E.C., Tarle G., Thomas D., To C., Tremblay P.E.,
Troxel M.A., Tucker D.L., Turner D.J., Varga T.N., Walker A.R.,
Wechsler R.H., Weller J., Wester W., Wilkinson R.D., Yanny B., Zhang Y.,
Nikutta R., Fitzpatrick M., Jacques A., Scott A., Olsen K., Huang L.,
Herrera D., Juneau S., Nidever D., Weaver B.A., Adean C., Correia V.,
de Freitas M., Freitas F.N., Singulani C., Vila-Verde G.
(The Linea Science Server)
<Astrophys. J. Suppl., 255, 20 (2021)>
=2021ApJS..255...20A 2021ApJS..255...20A
=2022yCat.2371....0A 2022yCat.2371....0A
ADC_Keywords: Surveys; Photometry, ugriz; Reddening
Keywords: astronomical databases: miscellaneous ; catalogs ;
cosmology: observations ; surveys ; techniques: image processing ;
techniques: photometric
Abstract:
We present the second public data release of the Dark Energy Survey,
DES DR2, based on optical/near-infrared imaging by the Dark Energy
Camera mounted on the 4m Blanco telescope at Cerro Tololo
Inter-American Observatory in Chile. DES DR2 consists of reduced
single-epoch and coadded images, a source catalog derived from coadded
images, and associated data products assembled from 6yr of DES science
operations. This release includes data from the DES wide-area survey
covering ∼5000deg2 of the southern Galactic cap in five broad
photometric bands, grizY. DES DR2 has a median delivered point-spread
function FWHM of g=1.11", r=0.95", i=0.88", z=0.83", and Y=0.90",
photometric uniformity with a standard deviation of <3mmag with
respect to Gaia DR2 G band, a photometric accuracy of ∼11mmag, and a
median internal astrometric precision of ∼27mas. The median coadded
catalog depth for a 1farcs95 diameter aperture at signal-to-noise
ratio =10 is g=24.7, r=24.4, i=23.8, z=23.1, and Y=21.7mag. DES DR2
includes ∼691 million distinct astronomical objects detected in
10169 coadded image tiles of size 0.534deg2 produced from
76217 single-epoch images. After a basic quality selection, benchmark
galaxy and stellar samples contain 543 million and 145 million
objects, respectively.
Description:
To achieve the DES science goals, the DES Collaboration designed,
built, and utilized the Dark Energy Camera (DECam), a 570 megapixel
camera with a 3deg2 field of view installed at the prime focus of
the 4m Blanco telescope at Cerro Tololo Inter-American Observatory
(CTIO) in northern Chile.
The first major release of processed DES data, DES DR1 (II/357),
encompassed data products derived from the wide-area and the supernova
surveys taken in the first three years of science operations
(2013-August -- 2016-February).
Here we present the content, validation, and data access services for
the second public DES data release, DES DR2. DES DR2 comprises coadded
images of size 0.534deg2 and source catalogs, as well as calibrated
single-epoch CCD images, from the processing of all six years of DES
wide-area survey observations and all five years of DES supernova
survey observations. DES DR2 contains roughly 18TB of coadd images and
3TB of tables. All DES DR1 data have been reprocessed as input into
DES DR2.
DES was scheduled to observe for 760 distinct full or half nights
between 2013 August 15 and 2019 January 9. The DES DR2 coadd images
and catalogs are derived from a subset of the wide-area component of
DES and include exposures collected during 681 distinct nights.
See Section 2.
All magnitudes quoted in the text are in the AB system, and all
astronomical coordinates are provided in the Gaia-CRF2 reference
frame. All quoted uncertainties are 1σ (roughly 68% confidence
interval) unless indicated otherwise.
Acknowledging the Dark Energy Survey (DES) in publications:
This project used public archival data from the Dark Energy Survey
(DES). Funding for the DES Projects has been provided by the U.S.
Department of Energy, the U.S. National Science Foundation, the
Ministry of Science and Education of Spain, the Science and Technology
Facilities Council of the United Kingdom, the Higher Education Funding
Council for England, the National Center for Supercomputing
Applications at the University of Illinois at Urbana-Champaign, the
Kavli Institute of Cosmological Physics at the University of Chicago,
the Center for Cosmology and Astro-Particle Physics at the Ohio State
University, the Mitchell Institute for Fundamental Physics and
Astronomy at Texas A&M University, Financiadora de Estudos e Projetos,
Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de
Janeiro, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
and the Ministerio da Ciencia, Tecnologia e Inovacao, the Deutsche
Forschungsgemeinschaft and the Collaborating Institutions in the Dark
Energy Survey.
The Collaborating Institutions are Argonne National Laboratory, the
University of California at Santa Cruz, the University of Cambridge,
Centro de Investigaciones Energeticas, Medioambientales y
Tecnologicas-Madrid, the University of Chicago, University College
London, the DES-Brazil Consortium, the University of Edinburgh, the
Eidgenossische Technische Hochschule (ETH) Zurich, Fermi National
Accelerator Laboratory, the University of Illinois at
Urbana-Champaign, the Institut de Ciencies de l'Espai (IEEC/CSIC), the
Institut de Fisica d'Altes Energies, Lawrence Berkeley National
Laboratory, the Ludwig-Maximilians Universitat Munchen and the
associated Excellence Cluster Universe, the University of Michigan,
the National Optical Astronomy Observatory, the University of
Nottingham, The Ohio State University, the OzDES Membership
Consortium, the University of Pennsylvania, the University of
Portsmouth, SLAC National Accelerator Laboratory, Stanford University,
the University of Sussex, and Texas A&M University.
Based in part on observations at Cerro Tololo Inter-American
Observatory, National Optical Astronomy Observatory, which is operated
by the Association of Universities for Research in Astronomy (AURA)
under a cooperative agreement with the National Science Foundation.
See http://des.ncsa.illinois.edu/thanks for the TeX version.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
des_dr2.sam 1566 1000 *Sample of the Dark Energy Survey (DES) DR2
main catalog (1000 among 691,483,608 sources)
--------------------------------------------------------------------------------
Note on des_dr2.sam: The DES griz filters are similar but not identical to the
SDSS griz filter. Transformation equations may be used to convert
objects within restricted color ranges between the two filter systems.
See: http://des.ncsa.illinois.edu/releases/dr2/dr2-docs/dr2-transformations
--------------------------------------------------------------------------------
See also:
II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)
http://des.ncsa.illinois.edu/releases/dr2 : DES DR2 home page
Byte-by-byte Description of file: des_dr2.sam
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 23 A23 --- DES Identifier based on IAU format
(DES JHHMMSS.ss+DDMMSS.s);
column added by CDS
25- 34 F10.6 deg RAdeg Right ascension (ICRS) (ALPHAWIN_J2000)
36- 45 F10.6 deg DEdeg Declination (ICRS) (DELTAWIN_J2000)
47- 56 I10 --- CoadID Unique identifier for the co-added
objects (COADDOBJECTID)
58- 69 A12 --- Tile Identifier of each one of the tiles on
which the survey is gridded
(DESHHMM+DDMM) (TILENAME)
71- 75 I5 --- Hpix32 Healpix identifier for its NSIDE grid
size in a NESTED schema (HPIX_32)
77- 81 I5 --- Hpix64 Healpix identifier for its NSIDE grid
size in a NESTED schema (HPIX_64)
83- 90 I8 --- Hpix1024 Healpix identifier for its NSIDE grid
size in a NESTED schema (HPIX_1024)
92- 100 I9 --- Hpix4069 Healpix identifier for its NSIDE grid
size in a NESTED schema (HPIX_4096)
102- 111 I10 --- Hpix16384 Healpix identifier for its NSIDE grid
size in a NESTED schema (HPIX_16384)
113- 125 F13.9 deg GLON Galactic longitude (GALACTIC_L)
127- 139 F13.9 deg GLAT Galactic latitude (GALACTIC_B)
141- 148 F8.3 pix Aimg [0.49/1903] Major axis size based on an
isophotal model (A_IMAGE)
150- 154 F5.3 pix e_Aimg [/7] Uncertainty in major axis size from
isophotal model (ERRA_IMAGE)
156- 162 F7.3 pix Bimg [0.12/358] Minor axis size based on an
isophotal model (B_IMAGE)
164- 168 F5.3 pix e_Bimg [/0.9] Uncertainty in minor axis size
from isophotal model (ERRB_IMAGE)
170- 176 F7.3 deg PA [-90/90] Position angle of source in
J2000 coordinates from non-windowed
measurement (THETA_J2000)
178- 184 F7.3 deg e_PA [-90/90] Uncertainty in position angle
from isophotal model (ERRTHETA_IMAGE)
186- 191 F6.3 pix KRad [0/50.5] Kron radius measured from
detection image (KRON_RADIUS)
193- 198 F6.4 mag EBV [3.8e-4/0.24] E(B-V) reddening
coefficient from
Schlegel+ 1998ApJ....500..55S 1998ApJ....500..55S (EBV_SFD98)
200- 206 F7.4 mag gmag0 [7.2/]?=99 Dereddened g-band (AB)
magnitude estimation (MAGAUTOG_DERED)
208- 214 F7.4 mag rmag0 [7/]?=99 Dereddened r-band (AB)
magnitude estimation (MAGAUTOR_DERED)
216- 222 F7.4 mag imag0 [7.7/]?=99 Dereddened i-band (AB)
magnitude estimation (MAGAUTOI_DERED)
224- 230 F7.4 mag zmag0 [6.6/]?=99 Dereddened z-band (AB)
magnitude estimation (MAGAUTOZ_DERED)
232- 238 F7.4 mag Ymag0 [4.8/]?=99 Dereddened Y-band (AB)
magnitude estimation (MAGAUTOY_DERED)
240- 247 F8.4 mag gmag0avg [-42/28]? Dereddened weighted average
g-band (AB) magnitude of PSF fit single
epoch detections (WAVGMAGPSFGDERED)
249- 256 F8.4 mag rmag0avg [-45/28]? Weighted average r-band (AB)
magnitude of PSF fit single epoch
detections (WAVGMAGPSFRDERED)
258- 265 F8.4 mag imag0avg [-41/27]? Weighted average i-band (AB)
magnitude of PSF fit single epoch
detections (WAVGMAGPSFIDERED)
267- 274 F8.4 mag zmag0avg [-42/26]? Weighted average z-band (AB)
magnitude of PSF fit single epoch
detections (WAVGMAGPSFZDERED)
276- 283 F8.4 mag Ymag0avg [-44/25]? Weighted average Y-band (AB)
magnitude of PSF fit single epoch
detections (WAVGMAGPSFYDERED)
285- 286 I2 --- ClCoad ? Classification from Sextractor quantities
(EXTENDEDCLASSCOADD) (1)
288- 289 I2 --- ClWavg ? Classification from Weighted average PSF
magnitudes (EXTENDEDCLASSWAVG) (1)
291- 293 I3 --- gFlag [0/153] Cautionary flag for g-band
(<4=well behaved objects) (FLAGS_G)
295 I1 --- gIsoFl [0/1] Flag identifying sources with
missing/flagged pixels considering all
single epoch images in g-band
(1=unreliable photometry)
(IMAFLAGSISOG)
297- 298 I2 --- Ngep [0/20] Number of epochs the source is
detected in single epoch g-band images
(NEPOCHS_G)
300- 302 I3 --- rFlag [0/153] Cautionary flag for r-band
(<4=well behaved objects) (FLAGS_R)
304 I1 --- rIsoFl [0/1] Flag identifying sources with
missing/flagged pixels considering all
single epoch images in r-band
(1=unreliable photometry)
(IMAFLAGSISOR)
306- 307 I2 --- Nrep [0/20] Number of epochs the source is
detected in single epoch r-band images
(NEPOCHS_R)
309- 311 I3 --- iFlag [0/153] Cautionary flag for i-band
(<4=well behaved objects) (FLAGS_I)
313 I1 --- iIsoFl [0/1] Flag identifying sources with
missing/flagged pixels considering all
single epoch images in i-band
(1=unreliable photometry)
(IMAFLAGSISOI)
315- 316 I2 --- Niep [0/22] Number of epochs the source is
detected in single epoch i-band images
(NEPOCHS_I)
318- 320 I3 --- zFlag [0/157] Cautionary flag for z-band
(<4=well behaved objects) (FLAGS_Z)
322 I1 --- zIsoFl [0/1] Flag identifying sources with
missing/flagged pixels considering all
single epoch images in z-band
(1=unreliable photometry)
(IMAFLAGSISOZ)
324- 325 I2 --- Nzep [0/21] Number of epochs the source is
detected in single epoch z-band images
(NEPOCHS_Z)
327- 329 I3 --- yFlag [0/153] Cautionary flag for Y-band
(<4=well behaved objects) (FLAGS_Y)
331 I1 --- YIsoFl [0/1] Flag identifying sources with
missing/flagged pixels considering all
single epoch images in Y-band
(1=unreliable photometry)
(IMAFLAGSISOY)
333- 334 I2 --- Nyep [0/18] Number of epochs the source is
detected in single epoch Y-band images
(NEPOCHS_Y)
336- 343 F8.3 pix amajg [0.28/1855] Major-axis size from
second-order windowed moment
measurements in g-band (AWINIMAGEG)
345- 352 F8.3 pix amajr Major-axis size from second-order
windowed moment measurements in r-band
(AWINIMAGER)
354- 361 F8.3 pix amaji Major-axis size from second-order
windowed moment measurements in i-band
(AWINIMAGEI)
363- 370 F8.3 pix amajz Major-axis size from second-order
windowed moment measurements in z-band
(AWINIMAGEZ)
372- 379 F8.3 pix amajY Major-axis size from second-order
windowed moment measurements in Y-band
(AWINIMAGEY)
381- 387 F7.3 pix bming [0.015/344] Minor-axis size from
second-order windowed moment
measurements in g-band (BWINIMAGEG)
389- 395 F7.3 pix bminr Minor-axis size from second-order
windowed moment measurements in r-band
(BWINIMAGER)
397- 403 F7.3 pix bmini Minor-axis size from second-order
windowed moment measurements in i-band
(BWINIMAGEI)
405- 411 F7.3 pix bminz Minor-axis size from second-order
windowed moment measurements in z-band
(BWINIMAGEZ)
413- 419 F7.3 pix bminY Minor-axis size from second-order
windowed moment measurements in Y-band
(BWINIMAGEY)
421- 426 F6.2 deg PAg [-90/90] Position angle of source for
converged windowed measurement grow from
x to y in g-band (THETAWINIMAGEG)
428- 433 F6.2 deg PAr [-90/90] Position angle of source for
converged windowed measurement grow from
x to y in r-band (THETAWINIMAGER)
435- 440 F6.2 deg PAi [-90/90] Position angle of source for
converged windowed measurement grow from
x to y in i-band (THETAWINIMAGEI)
442- 447 F6.2 deg PAz [-90/90] Position angle of source for
converged windowed measurement grow from
x to y in z-band (THETAWINIMAGEZ)
449- 454 F6.2 deg PAY [-90/90] Position angle of source for
converged windowed measurement grow from
x to y in Y-band (THETAWINIMAGEY)
456- 462 F7.3 pix e_amajg [/166] amajg uncertainty (ERRAWINIMAGEG)
464- 470 F7.3 pix e_amajr amajr uncertainty (ERRAWINIMAGER)
472- 478 F7.3 pix e_amaji amaji uncertainty (ERRAWINIMAGEI)
480- 486 F7.3 pix e_amajz amajz uncertainty (ERRAWINIMAGEZ)
488- 494 F7.3 pix e_amajY amajY uncertainty (ERRAWINIMAGEY)
496- 502 F7.3 pix e_bming [/105] bming uncertainty (ERRBWINIMAGEG)
504- 510 F7.3 pix e_bminr bminr uncertainty (ERRBWINIMAGER)
512- 518 F7.3 pix e_bmini bmini uncertainty (ERRBWINIMAGEI)
520- 526 F7.3 pix e_bminz bminz uncertainty (ERRBWINIMAGEZ)
528- 534 F7.3 pix e_bminY bminY uncertainty (ERRBWINIMAGEY)
536- 541 F6.2 deg e_PAg [-90/90] Uncertainty in source position
angle from converged windowed
measurement in g-band
(ERRTHETAWINIMAGEG)
543- 548 F6.2 deg e_PAr [-90/90] Uncertainty in source position
angle from converged windowed measurement
in r-band (ERRTHETAWINIMAGER)
550- 555 F6.2 deg e_PAi [-90/90] Uncertainty in source position
angle from converged windowed measurement
in i-band (ERRTHETAWINIMAGEI)
557- 562 F6.2 deg e_PAz [-90/90] Uncertainty in source position
angle from converged windowed measurement
in z-band (ERRTHETAWINIMAGEZ)
564- 569 F6.2 deg e_PAY [-90/90] Uncertainty in source position
angle from converged windowed measurement
in Y-band (ERRTHETAWINIMAGEY)
571- 583 F13.3 pix gRe [-5e7/7826] Half-light g-band radius for
the object (FLUXRADIUSG)
585- 598 F14.3 pix rRe Half-light r-band radius for the object
(FLUXRADIUSR)
600- 613 F14.3 pix iRe Half-light i-band radius for the object
(FLUXRADIUSI)
615- 626 F12.3 pix zRe Half-light z-band radius for the object
(FLUXRADIUSZ)
628- 641 F14.3 pix YRe ? Half-light Y-band radius for the
object (FLUXRADIUSY)
643- 650 F8.3 pix gFWHM [-546/2602] g-band FWHM measured from
the isophotal area (FWHMIMAGEG)
652- 659 F8.3 pix rFWHM r-band FWHM measured from the isophotal
area (FWHMIMAGER)
661- 668 F8.3 pix iFWHM i-band FWHM measured from the isophotal
area (FWHMIMAGEI)
670- 677 F8.3 pix zFWHM z-band FWHM measured from the isophotal
area (FWHMIMAGEZ)
679- 688 F10.3 pix YFWHM Y-band FWHM measured from the isophotal
area (FWHMIMAGEY)
690- 696 I7 pix2 gArea [0/1580183] Isophotal area of the
coadded source in g-band (ISOAREAIMAGEG)
698- 704 I7 pix2 rArea Isophotal area of the coadded source in
r-band (ISOAREAIMAGER)
706- 712 I7 pix2 iArea Isophotal area of the coadded source in
i-band (ISOAREAIMAGEI)
714- 720 I7 pix2 zArea Isophotal area of the coadded source in
z-band (ISOAREAIMAGEZ)
722- 728 I7 pix2 YArea Isophotal area of the coadded source in
Y-band (ISOAREAIMAGEY)
730- 738 F9.4 mag gBckg [-207/1244] g-band (AB) background level
by CCD-amplifier (BACKGROUND_G)
740- 747 F8.4 mag rBckg [-7/691] r-band (AB) background level by
CCD-amplifier (BACKGROUND_R)
749- 756 F8.4 mag iBckg [-40/437] i-band (AB) background level
by CCD-amplifier (BACKGROUND_I)
758- 765 F8.4 mag zBckg [-31/556] z-band (AB) background level
by CCD-amplifier (BACKGROUND_Z)
767- 775 F9.4 mag YBckg [-26/6110] Y-band (AB) background level
by CCD-amplifier (BACKGROUND_Y)
777- 780 I4 --- Ng [0/1000] Number of iterations in model
fitting g-band photometric measurements
(NITERMODELG)
782- 785 I4 --- Nr Number of iterations in model fitting
r-band photometric measurements
(NITERMODELR)
787- 790 I4 --- Ni Number of iterations in model fitting
i-band photometric measurements
(NITERMODELI)
792- 795 I4 --- Nz Number of iterations in model fitting
z-band photometric measurements
(NITERMODELZ)
797- 800 I4 --- NY Number of iterations in model fitting
Y-band photometric measurements
(NITERMODELY)
802- 807 F6.3 pix KRadg [0/50.3] Kron radius measured from
coadded image in g-band (KRONRADIUSG)
809- 814 F6.3 pix KRadr Kron radius measured from coadded image
in r-band (KRONRADIUSR)
816- 821 F6.3 pix KRadi Kron radius measured from coadded image
in i-band (KRONRADIUSI)
823- 828 F6.3 pix KRadz Kron radius measured from coadded image
in z-band (KRONRADIUSZ)
830- 835 F6.3 pix KRadY Kron radius measured from coadded image
in Y-band (KRONRADIUSY)
837- 843 F7.4 mag gmag [7.29/]? g-band (AB) magnitude
estimation (MAGAUTOG) (2)
845- 851 F7.4 mag rmag [7/]? r-band (AB) magnitude estimation
(MAGAUTOR) (2)
853- 859 F7.4 mag imag [7.8/]? i-band (AB) magnitude estimation
(MAGAUTOI) (2)
861- 867 F7.4 mag zmag [6.6/]? z-band (AB) magnitude estimation
(MAGAUTOZ) (2)
869- 875 F7.4 mag Ymag [4.9/]? Y-band (AB) magnitude estimation
(MAGAUTOY) (2)
877- 884 F8.4 mag e_gmag [/100]? gmag uncertainty
(MAGERRAUTOG) (2)
886- 892 F7.4 mag e_rmag [/100]? rmag uncertainty
(MAGERRAUTOR) (2)
894- 900 F7.4 mag e_imag [/100]? imag uncertainty
(MAGERRAUTOI) (2)
902- 908 F7.4 mag e_zmag [/100]? zmag uncertainty
(MAGERRAUTOZ) (2)
910- 916 F7.4 mag e_Ymag [/100]? Ymag uncertainty
(MAGERRAUTOY) (2)
918- 925 F8.4 mag gmagPSF [-42/28.1]? Weighted average g-band (AB)
magnitude of PSF fit single epoch
detections (WAVGMAGPSF_G)
927- 934 F8.4 mag rmagPSF [-45/28]? Weighted average r-band (AB)
magnitude of PSF fit single epoch
detections (WAVGMAGPSF_R)
936- 943 F8.4 mag imagPSF [-41/27]? Weighted average i-band (AB)
magnitude of PSF fit single epoch
detections (WAVGMAGPSF_I)
945- 952 F8.4 mag zmagPSF [-42/26]? Weighted average z-band (AB)
magnitude of PSF fit single epoch
detections (WAVGMAGPSF_Z)
954- 961 F8.4 mag YmagPSF [-44/25]? Weighted average Y-band (AB)
magnitude of PSF fit single epoch
detections (WAVGMAGPSF_Y)
963- 969 F7.4 mag e_gmagPSF [/14]? gmagPSF uncertainty
(WAVGMAGERRPSF_G)
971- 977 F7.4 mag e_rmagPSF [/18]? rmagPSF uncertainty
(WAVGMAGERRPSF_R)
979- 985 F7.4 mag e_imagPSF [/21]? imagPSF uncertainty
(WAVGMAGERRPSF_I)
987- 993 F7.4 mag e_zmagPSF [/2.2]? zmagPSF uncertainty
(WAVGMAGERRPSF_Z)
995- 1001 F7.4 mag e_YmagPSF [/1.1]? YmagPSF uncertainty
(WAVGMAGERRPSF_Y)
1003- 1015 E13.6 --- gFlux [-3.8e7/1.3e9] g-band flux measurement for
an elliptical model based on the Kron
radius in ADU units (FLUXAUTOG)
1017- 1029 E13.6 --- rFlux r-band flux measurement for an
elliptical model based on the Kron
radius in ADU units (FLUXAUTOR)
1031- 1043 E13.6 --- iFlux i-band flux measurement for an
elliptical model based on the Kron
radius in ADU units (FLUXAUTOI)
1045- 1057 E13.6 --- zFlux z-band flux measurement for an
elliptical model based on the Kron
radius in ADU units (FLUXAUTOZ)
1059- 1071 E13.6 --- YFlux ? Y-band flux measurement for an
elliptical model based on the Kron
radius in ADU units (FLUXAUTOY)
1073- 1084 E12.6 --- e_gFlux [0/14971] gFlux uncertainty
(FLUXERRAUTOG)
1086- 1097 E12.6 --- e_rFlux rFlux uncertainty (FLUXERRAUTOR)
1099- 1110 E12.6 --- e_iFlux iFlux uncertainty (FLUXERRAUTOI)
1112- 1123 E12.6 --- e_zFlux zFlux uncertainty (FLUXERRAUTOZ)
1125- 1136 E12.6 --- e_YFlux YFlux uncertainty (FLUXERRAUTOY)
1138- 1149 E12.6 --- gFluxPSF [5.9/4.3e28]? Weighted averaged g-band
flux of PSF fit single epoch detections
in ADU units (WAVGFLUXPSF_G)
1151- 1162 E12.6 --- rFluxPSF ? Weighted averaged r-band flux of PSF
fit single epoch detections in ADU units
(WAVGFLUXPSF_R)
1164- 1175 E12.6 --- iFluxPSF ? Weighted averaged i-band flux of PSF
fit single epoch detections in ADU units
(WAVGFLUXPSF_I)
1177- 1188 E12.6 --- zFluxPSF ? Weighted averaged z-band flux of PSF
fit single epoch detections in ADU units
(WAVGFLUXPSF_Z)
1190- 1201 E12.6 --- YFluxPSF ? Weighted averaged Y-band flux of PSF
fit single epoch detections in ADU units
(WAVGFLUXPSF_Y)
1203- 1214 E12.6 --- e_gFluxPSF [9/1.4e27]? gFluxPSF uncertainty
(WAVGFLUXERRPSF_G)
1216- 1227 E12.6 --- e_rFluxPSF ? rFluxPSF uncertainty (WAVGFLUXERRPSF_R)
1229- 1240 E12.6 --- e_iFluxPSF ? iFluxPSF uncertainty (WAVGFLUXERRPSF_I)
1242- 1253 E12.6 --- e_zFluxPSF ? zFluxPSF uncertainty (WAVGFLUXERRPSF_Z)
1255- 1266 E12.6 --- e_YFluxPSF ? YFluxPSF uncertainty (WAVGFLUXERRPSF_Y)
1268- 1272 F5.3 --- S/Gg Extended source flag (0=galaxy; 1=star)
(CLASSSTARG)
1274- 1278 F5.3 --- S/Gr Extended source flag (0=galaxy; 1=star)
(CLASSSTARR)
1280- 1284 F5.3 --- S/Gi Extended source flag (0=galaxy; 1=star)
(CLASSSTARI)
1286- 1290 F5.3 --- S/Gz Extended source flag (0=galaxy; 1=star)
(CLASSSTARZ)
1292- 1296 F5.3 --- S/GY Extended source flag (0=galaxy; 1=star)
(CLASSSTARY)
1298- 1316 F19.3 --- Exg [-3.2/2.4e12]? Morphology based
classifier in g-band (0=star;
larger values=galaxy) (SPRADMODELG)
1318- 1334 F17.3 --- Exr ? Morphology based classifier in r-band
(0=star; larger values=galaxy)
(SPREADMODELR)
1336- 1351 F16.3 --- Exi Morphology based classifier in i-band
(0=star; larger values=galaxy)
(SPREADMODELI)
1353- 1368 F16.3 --- Exz ? Morphology based classifier in z-band
(0=star; larger values=galaxy)
(SPREADMODELZ)
1370- 1391 F22.3 --- ExY ? Morphology based classifier in Y-band
(0=star; larger values=galaxy)
(SPREADMODELY)
1393- 1399 F7.3 --- SModg [-39.1/1]? SPREAD MODEL using the
weighted averaged g-band values from
single epoch detections
(WAVGSPREADMODEL_G) (3)
1401- 1406 F6.3 --- SModr ? SPREAD MODEL using the weighted
averaged r-band values from single epoch
detections (WAVGSPREADMODEL_R) (3)
1408- 1413 F6.3 --- SModi ? SPREAD MODEL using the weighted
averaged i-band values from single epoch
detections (WAVGSPREADMODEL_I)
1415- 1420 F6.3 --- SModz [-0.4/2.4]? SPREAD MODEL using the
weighted averaged z-band values from
single epoch detections
(WAVGSPREADMODEL_Z)
1422- 1427 F6.3 --- SModY [-0.6/0.2]? SPREAD MODEL using the
weighted averaged Y-band values from
single epoch detections
(WAVGSPREADMODEL_Y)
1429- 1446 F18.3 --- e_Exg [0/3.5e13] Exg uncertainty
(SPREADERRMODELG)
1448- 1464 F17.3 --- e_Exr Exr uncertainty (SPREADERRMODELR)
1466- 1482 F17.3 --- e_Exi Exi uncertainty (SPREADERRMODELI)
1484- 1499 F16.3 --- e_Exz Exz uncertainty (SPREADERRMODELZ)
1501- 1523 F23.3 --- e_ExY ExY uncertainty (SPREADERRMODELY)
1525- 1536 F12.3 --- e_SModg [0/5.9e7]? SModg uncertainty
(WAVGSPREADERRMODEL_G)
1538- 1545 F8.3 --- e_SModr ? SModr uncertainty
(WAVGSPREADERRMODEL_R)
1547- 1552 F6.3 --- e_SModi ? SModi uncertainty
(WAVGSPREADERRMODEL_I)
1554- 1560 F7.3 --- e_SModz ? SModz uncertainty
(WAVGSPREADERRMODEL_Z)
1562- 1566 F5.3 --- e_SModY ? SModY uncertainty
(WAVGSPREADERRMODEL_Y)
--------------------------------------------------------------------------------
Note (1): Classification as follows:
0 = high-confidence stars
1 = candidate stars
2 = mostly galaxies
3 = high-confidence galaxies
-9 = no data
Note (2): Magnitudes with errors ≥99mag and errors >100mag have been set
to NULL values by CDS.
Note (3): "Infinite" values for WAVGSPREADMODEL g- ("SModg") and
r-band ("SModr") haven been set to NULL values by CDS.
--------------------------------------------------------------------------------
History:
Downloaded from http://desdr-server.ncsa.illinois.edu/despublic/dr2_tiles/
References:
Abbott et al. DR1 2018ApJS..239...18A 2018ApJS..239...18A Cat. II/357
(End) P. Ocvirk, F.-X. Pineau, E. Perret [CDS] 11-Jan-2022