II/344 KiDS-ESO-DR2 multi-band source catalog (de Jong+, 2015)
The Kilo-Degree Survey second data release multi-band source catalog.
de Jong J.T.A., Verdoes Kleijn G.A., Boxhoorn D.R., Buddelmeijer H.,
Capaccioli M., Getman F., Grado A., Helmich E., Huang Z., Irisarri N.,
Kuijken K., La Barbera F., McFarland J.P., Napolitano N.R., Radovich M.,
Sikkema G., Valentijn E.A., Begeman K.G., Brescia M., Cavuoti S., Choi A.,
Cordes O.-M., Covone G., Dall'Ora M., Hildebrandt H., Longo G., Nakajima R.,
Paolillo M., Puddu E., Rifatto A., Tortora C., van Uitert E., Buddendiek A.,
Harnois-Deraps J., Erben T., Eriksen M.B., Heymans C., Hoekstra H.,
Joachimi B., Kitching T.D., Klaes D., Koopmans L.V.E., Koehlinger F.,
Roy N., Sifon C., Schneider P., Sutherland W.J., Viola M., Vriend W.-J.
<Astron. Astrophys., 582, A62 (2015)>
=2015A&A...582A..62D 2015A&A...582A..62D
=2016yCat.2344....0D 2016yCat.2344....0D
ADC_Keywords: Photometry, ugriz ; Galaxy catalogs
Mission_Name: ESO
Keywords: methods: observational; surveys; galaxies: general;
large-scale structure of Universe
Abstract:
The Kilo-Degree Survey (KiDS) is an optical wide-field imaging survey
carried out with the VLT Survey Telescope and the OmegaCAM camera.
KiDS will image 1500 square degrees in four filters (ugri), and
together with its near-infrared counterpart VIKING will produce deep
photometry in nine bands. Designed for weak lensing shape and
photometric redshift measurements, its core science driver is mapping
the large-scale matter distribution in the Universe back to a redshift
of ∼0.5. Secondary science cases include galaxy evolution, Milky Way
structure, and the detection of high-redshift clusters and quasars.
Description:
KiDS data releases consist of ∼1 square degree tiles that have been
successfully observed in all four survey filters (u,g,r,i).
The second data release (KiDS-ESO-DR2) was available in February 2015
and contains imaging data, masks and single-band source lists for all
tiles observed in all four filters for which observations were
completed during the second year of regular operations (1 October 2012
to 31 September 2013), a total of 98 tiles. Apart from the data
products mentioned above, KiDS-ESO-DR2 also provides a multi-band
source catalogue based on the combined set of 148 tiles released in
the first two data releases.
A complete list of all tiles with data quality parameters can be found
on the KiDS website: http://kids.strw.leidenuniv.nl/DR2/
Acknowledging the KiDS-ESO-DR2 in publications:
Users of data from this release should cite "de Jong et al.
2015A&A...582A..62D 2015A&A...582A..62D)" and are required to acknowledge the source of
the data with the following citation in their publications:
Based on data products from observations made with ESO Telescopes at
the La Silla Paranal Observatory under programme IDs 177.A-3016,
177.A-3017 and 177.A-3018, and on data products produced by
Target/OmegaCEN, INAF-OACN, INAF-OAPD and the KiDS production team, on
behalf of the KiDS consortium. OmegaCEN and the KiDS production team
acknowledge support by NOVA and NWO-M grants. Members of INAF-OAPD and
INAF-OACN also acknowledge the support from the Department of Physics
& Astronomy of the University of Padova, and of the Department of
Physics of Univ. Federico II (Naples).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
kids_dr2.sam 543 1000 *KiDS-ESO-DR2 multi-band source catalog
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Note on kids_dr2.sam: This is a sample of the complete multi-band catalog
containing 16,622,442 sources.
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See also:
V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003)
J/MNRAS/452/2087 : Galaxy And Mass Assembly (GAMA): DR2 (Liske+, 2015)
J/A+A/568/A126 : SDSS-DR9 photometric redshifts (Brescia+, 2014)
J/MNRAS/440/2036 : VPHAS+ survey synthetic colours (Drew+, 2014)
J/ApJ/749/38 : CFHTLS-SL2S-ARCS strong lens candidates (More+, 2012)
J/AJ/141/189 : Classifiers for star/galaxy separation (Vasconcellos+, 2011)
J/MNRAS/413/1145 : Galaxy clusters in the COSMOS field (Bellagamba+, 2011)
J/MNRAS/382/109 : Massive galaxies in Extended Groth Strip (Trujillo+, 2007)
J/AJ/132/926 : Galaxies in the Hubble Ultra Deep Field (Coe+, 2006)
J/MNRAS/246/433 : CCD photometry + APM parameters for galaxies (Maddox+ 1990)
http://kids.strw.leidenuniv.nl/DR2 : kiDS DR2 home page
Byte-by-byte Description of file: kids_dr2.sam
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Bytes Format Units Label Explanations
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1- 25 A25 --- KiDS Source identifier (KIDS JHHMMSS.ss+DDMMSS.ss)
(SourceID) (1)
27- 36 F10.6 deg RAdeg Right ascension (J2000) (RAJ2000)
38- 47 F10.6 deg DEdeg Declination (J2000) (DEJ2000)
49- 51 I3 --- mClass ?=-99 Star/galaxy separation (2)
53- 61 F9.4 pix A Linear semi major axis in pixel units
63- 70 F8.4 pix B Linear semi minor axis in pixel units
72- 76 F5.3 --- S/G SExtractor star/galaxy classifier
(0=galaxy) (mClassStat)
78- 82 F5.3 --- Ell Ellipticity
84- 95 F12.4 pix grad ? g-band SExtractor FLUX_RADIUS (FLUXRADIUSG)
97-108 F12.4 pix irad ? i-band SExtractor FLUX_RADIUS (FLUXRADIUSI)
110-124 F15.4 pix rrad ? r-band SExtractor FLUX_RADIUS (FLUXRADIUSR)
126-138 F13.4 pix urad ? u-band SExtractor FLUX_RADIUS (FLUXRADIUSU)
140-153 F14.4 pix gFWHM ? g-band SExtractor FWHM_IMAGE (FWHMIMAGEG)
155-166 F12.4 pix iFWHM ? i-band SExtractor FWHM_IMAGE (FWHMIMAGEI)
168-178 F11.4 pix rFWHM ? r-band SExtractor FWHM_IMAGE (FWHMIMAGER)
180-193 F14.4 pix uFWHM ? u-band SExtractor FWHM_IMAGE (FWHMIMAGEU)
195-197 I3 --- gflg [0/120] g-band SExtractor extraction flag
(flg_G) (3)
199-201 I3 --- iflg [0/120] i-band SExtractor extraction flag
(flg_I) (3)
203-205 I3 --- rflg [0/124] r-band SExtractor extraction flag
(flg_R) (3)
207-209 I3 --- uflg [0/120] u-band SExtractor extraction flag
(flg_U) (3)
211-213 I3 --- gflgISO [0/255] g-band mask flag (IMAFLAGSISOG) (4)
215-217 I3 --- iflgISO [0/255] i-band mask flag (IMAFLAGSISOI) (4)
219-221 I3 --- rflgISO [0/255] r-band mask flag (IMAFLAGSISOR) (4)
223-225 I3 --- uflgISO [0/254] u-band mask flag (IMAFLAGSISOU) (4)
227-233 F7.4 pix Rad Kron-radius used for MAG_AUTO (KRON_RADIUS)
235-242 F8.5 mag e_gmag ? g-band error in MAG_AUTO (MAGERRAUTOG) (5)
244-251 F8.5 mag e_imag ? i-band error in MAG_AUTO (MAGERRAUTOI) (5)
253-260 F8.5 mag e_rmag ? r-band error in MAG_AUTO (MAGERRAUTOR) (5)
262-269 F8.5 mag e_umag ? u-band error in MAG_AUTO (MAGERRAUTOU) (5)
271-278 F8.5 mag e_gmagISO ? g-band error in MAG_ISO (MAGERRISOG) (5)
280-287 F8.5 mag e_imagISO ? i-band error in MAG_ISO (MAGERRISOI) (5)
289-296 F8.5 mag e_rmagISO ? r-band error in MAG_ISO (MAGERRISOR) (5)
298-305 F8.5 mag e_umagISO ? u-band error in MAG_ISO (MAGERRISOU) (5)
307-314 F8.5 mag gmag [10.4/42.8]? g-band AB magnitude (MAGAUTOG)
316-323 F8.5 mag imag [9.8/40.4]? i-band AB magnitude (MAGAUTOI)
325-332 F8.5 mag rmag [10.5/41.4]? r-band AB magnitude (MAGAUTOR)
334-341 F8.5 mag umag [8.7/40.5]? u-band AB magnitude (MAGAUTOU)
343-350 F8.5 mag gmagISO [11.2/42.7]? g-band AB magnitude (MAGISOG)
352-359 F8.5 mag imagISO [10.1/42.9]? i-band AB magnitude (MAGISOI)
361-368 F8.5 mag rmagISO [11.1/30.5]? r-band AB magnitude (MAGISOR)
370-377 F8.5 mag umagISO [12.1/43.7]? u-band AB magnitude (MAGISOU)
379-385 I7 --- gNmp g-band number of masked pixels (NIMAFLAGSISOG)
387-393 I7 --- iNmp i-band number of masked pixels (NIMAFLAGSISOI)
395-401 I7 --- rNmp r-band number of masked pixels (NIMAFLAGSISOR)
403-409 I7 --- uNmp u-band number of masked pixels (NIMAFLAGSISOU)
411-417 I7 pix2 gisoA g-band isophotal aperture (ISOAREAIMAGEG)
419-425 I7 pix2 iisoA i-band isophotal aperture (ISOAREAIMAGEI)
427-433 I7 pix2 risoA r-band isophotal aperture (ISOAREAIMAGER)
435-440 I6 pix2 uisoA u-band isophotal aperture (ISOAREAIMAGEU)
442-448 F7.3 deg PA [-90/90] Position angle (POSANG)
450-455 I6 --- SeqR [/600929]?=-99 r-band sequence number (SEQNR)
457-466 F10.4 pix gXpos X pixel position in g-band image (XPOS_G)
468-477 F10.4 pix iXpos X pixel position in i-band image (XPOS_I)
479-488 F10.4 pix rXpos X pixel position in r-band image (XPOS_R)
490-499 F10.4 pix uXpos X pixel position in u-band image (XPOS_U)
501-510 F10.4 pix gYpos Y pixel position in g-band image (YPOS_G)
512-521 F10.4 pix iYpos Y pixel position in i-band image (YPOS_I)
523-532 F10.4 pix rYpos Y pixel position in r-band image (YPOS_R)
534-543 F10.4 pix uYpos Y pixel position in u-band image (YPOS_U)
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Note (1): Some names with missing "0", having formats like JHHMMSS.ss+DDMMSS.s
or JHHMMSS.s+DDMMSS.ss have been corrected by CDS and the agreement
of the author in order to match the unique format JHHMMSS.ss+DDMMSS.ss
as in DR3.
Note (2): The result of the star/galaxy (S/G) classification is available via
the 2DPHOT (mClass) flag. Flag values are:
1 = high-confidence star candidates,
2 = objects with FWHM smaller than stars in the stellar locus,
e.g., some cosmic-rays and/or other unreliable sources),
4 = stars according to S/G separation, and
0 = otherwise (galaxies);
flag values are summed, so 2DPHOT=5 signifies a high-confidence
star candidate that is also above the S/G separation line.
Note (3): The extraction flag of a source given as a sum of powers of 2
by SExtractor. If a source has neighbors (flag = 1) and
is blended with another source (flag = 2) and
some pixels are saturated (flag = 4), then the final extraction flag
given to the source is 7 (= 1 + 4 + 2). Generally, a source with the
extraction flag 0 gives the most reliable photometry.
For detailed information on this flag, see
the SExtractor User's Manual.
Note (4): The flag image is used during source extraction for the single-band
source list to flag sources whose isophotes overlap with the critical
areas. The resulting flags are stored in the following two SExtractor
parameters:
IMAFLAGS_ISO: sum of all mask flags encountered in the isophote profile;
NIMAFLAG_ISO: number of flagged pixels entering IMAFLAGS_ISO.
See section 4.4 in de Jong et al. (2015A&A...582A..62D 2015A&A...582A..62D) for further
explanations.
Note (5): Magnitudes uncertainties ≥100mag have been left blank by CDS.
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History:
* Catalog downloaded from http://www.eso.org/qi/catalog/show/53
(End) Francois-Xavier Pineau, Emmanuelle Perret [CDS] 14-Oct-2016