II/382 VIKING catalogue data release 4 (Cross+, 2012)
VIKING (VISTA Kilo-degree Infrared Galaxy Survey): Catalogue Data Release 4
Cross N.J.G., Collins R.S., Mann R.G., Read M.A., Sutorius E.T.W.,
Blake R.P., Holliman M., Hambly N.C., Emerson J.P., Lawrence A., Noddle K.T.
<Astron. Astrophys., 548, A119 (2012) >
=2025yCat.2382....0C 2025yCat.2382....0C
=2012A&A...548A.119C 2012A&A...548A.119C
ADC_Keywords: Surveys ; Infrared sources ; Photometry, infrared
Mission_Name: ESO
Keywords: surveys - catalogs - astronomical databases: miscellaneous
Abstract:
We describe the VISTA Science Archive (VSA) and its first public
release of data from five of the six VISTA public surveys. The VSA
exists to support the VISTA surveys through their lifecycle: the VISTA
Public Survey consortia can use it during their quality control
assessment of survey data products before submission to the ESO
Science Archive Facility (ESO SAF); it supports their exploitation of
survey data prior to its publication through the ESO SAF; and,
subsequently, it provides the wider community with survey science
exploitation tools that complement the data product repository
functionality of the ESO SAF.
This paper has been written in conjunction with the first public
release of public survey data through the VSA and is designed to help
its users understand the data products available and how the
functionality of the VSA supports their varied science goals. We
describe the design of the database and outline the database-driven
curation processes that take data from nightly pipeline-processed and
calibrated FITS files to create science-ready survey datasets. Much of
this design, and the codebase implementing it, derives from our
earlier WFCAM Science Archive (WSA), so this paper concentrates on the
VISTA-specific aspects and on improvements made to the system in the
light of experience gained in operating the WSA.
Description:
Multi-band source catalogue of the VISTA Kilo-degree Infrared Galaxy
Survey (VIKING) in the ZYJHKs filters. This release contains 935 tiles
with coverage in all five VIKING filters. These 935 fields cover a
total of 1350 square degrees.
The VIKING survey with VISTA (ESO programme ID 179.A-2004) is a wide
area (covering a final area of 1350 sq.degrees), intermediate-depth
(5-sigma detection limit J21 on Vega system) near-infrared imaging
survey, in the five broadband filters Z, Y, J, H, Ks.
The sky coverage is at high galactic latitudes, and includes two main
stripes ∼70x10° each: one in the South Galactic cap near
Dec~-30°, and one near Dec∼0° in the North galactic cap; in
addition, there are two smaller outrigger patches called GAMA09 and
CFHLS-W1. Science goals include z >6.5 quasars, extreme brown dwarfs,
and multiwavelength coverage and identifications for a range of other
imaging surveys, notably VST-KiDS and Herschel-ATLAS.
This fourth and final public data release of VIKING data covers all of
the highest quality data taken in the survey to its completion. This
release, when combined with the first three releases, VIKING DR1, DR2
and DR3, includes all fields that met our quality control thresholds
in seeing (<1.3") and atmospheric transmission (thin cirrus or
clearer). The majority of the data was generated using version 1.3 of
the CASU processing pipeline that gives better tile grouting and zero
point corrections than used in the DR1 in 2013. A small number of the
fields required processing with the most recent version of the
pipeline (V1.5) to improve the photometric calibration, galactic
reddening corrections and improve the photometric reliability of the
derived catalogs but the resulting images and catalogs are comparable
between these two versions.
This release contains 935 tiles with coverage in all five VIKING
filters, 891 of which have a deep co-add in J, and an additional 44
with at least two filters where the second OB was not executed or one
filter in an OB was poor quality. These 935 fields cover a total of
1350 square degrees and the resulting catalogues include a total of
94,819,861 sources (including low-reliability single-band detections).
The imaging and catalogues (both single-band and band-merged) total
0.67 TB in this release. The coverage in each of the five sub-areas is
not completely contiguous but any inter-tile gaps are relatively
small.
The VIKING survey finished observing new fields in P97 reaching a
final survey area of the 1350 sq.deg. This was slightly smaller than
the design goal of 1500 sq.deg. as the original time allocation
assumed lower observational time overheads that were actually
encountered. Repeat observations in Periods 98, 99 and 100 of the
poorest quality fields were performed to ensure that the data are as
uniform as possible within this footprint. This final release includes
data from the full survey area with additional area covered compared
to FR3 plus a round of repeated observations of fields where one or
more of the images in one or more of the filters did not meet our
minimum data quality in terms of depth and/or seeing.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
viking4.sam 1236 1014 VIKING catalogue DR4 (2025-03-25)
viking_dr4.pdf 512 325 Viking catalog documentation
--------------------------------------------------------------------------------
See also:
II/329 : VIKING catalogue data release 1 (Edge+, 2013)
II/343 : VIKING catalogue data release 2 (Edge+, 2016)
Byte-by-byte Description of file: viking4.sam
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 I12 --- SrcID UID of this merged detection as assigned by
merge algorithm (SOURCEID)
14- 29 F16.12 deg RAdeg Celestial Right Ascension (J2000) (RA2000)
31- 46 F16.12 deg DEdeg Celestial Declination (J2000) (DEC2000)
48- 74 A27 --- Name IAU Name (not unique) (IAUNAME)
76- 81 I6 --- CueventId UID of curation event giving rise to this
record (CUEVENTID)
83- 94 I12 --- FrameId UID of the set of frames that this merged
source comes from (FRAMESETID)
96- 107 I12 --- PriOrSec Seam code for a unique (=0) or
duplicated (!=0) source (PRIORSEC)
109- 115 F7.4 mag Z-Ypnt ? Point source colour Z-Y (using aperMag3)
(ZMYPNT)
117- 124 F8.4 mag e_Z-Ypnt ? Error on point source colour Z-Y
(ZMYPNTERR)
126- 132 F7.4 mag Y-Jpnt ? Point source colour Y-J (using aperMag3)
(YMJPNT)
134- 141 F8.4 mag e_Y-Jpnt ? Error on point source colour Y-J
(YMJPNTERR)
143- 149 F7.4 mag J-Hpnt ? Point source colour J-H (using aperMag3)
(JMHPNT)
151- 158 F8.4 mag e_J-Hpnt ? Error on point source colour J-H
(JMHPNTERR)
160- 166 F7.4 mag H-Kspnt ? Point source colour H-Ks (using aperMag3)
(HMKSPNT)
168- 175 F8.4 mag e_H-Kspnt ? Error on point source colour H-Ks
(HMKSPNTERR)
177- 184 F8.4 mag J1-Hpnt ? Point source colour J1-H (using aperMag3)
(J_1MHPNT)
186- 194 F9.4 mag e_J1-Hpnt ? Error on point source colour J1-H
(J_1MHPNTERR)
196- 203 F8.4 mag Y-J2pnt ? Point source colour Y-J2 (using aperMag3)
(YMJ_2PNT)
205- 213 F9.4 mag e_Y-J2pnt ? Error on point source colour Y-J2
(YMJ_2PNTERR)
215- 221 F7.4 mag Z-Yext ? Extended source colour Z-Y
(using aperMagNoAperCorr3) (ZMYEXT)
223- 230 F8.4 mag e_Z-Yext ? Error on extended source colour Z-Y
(ZMYEXTERR)
232- 238 F7.4 mag Y-Jext ? Extended source colour Y-J
(using aperMagNoAperCorr3) (YMJEXT)
240- 247 F8.4 mag e_Y-Jext ? Error on extended source colour Y-J
(YMJEXTERR)
249- 255 F7.4 mag J-Hext ? Extended source colour J-H
(using aperMagNoAperCorr3) (JMHEXT)
257- 264 F8.4 mag e_J-Hext ? Error on extended source colour J-H
(JMHEXTERR)
266- 272 F7.4 mag H-Ksext ? Extended source colour H-Ks
(using aperMagNoAperCorr3) (HMKSEXT)
274- 281 F8.4 mag e_H-Ksext ? Error on extended source colour H-Ks
(HMKSEXTERR)
283- 290 F8.4 mag J1-Hext ? Extended source colour J1-H
(using aperMagNoAperCorr3) (J_1MHEXT)
292- 300 F9.4 mag e_J1-Hext ? Error on extended source colour J1-H
(J_1MHEXTERR)
302- 309 F8.4 mag Y-J2ext ? Extended source colour Y-J2
(using aperMagNoAperCorr3) (YMJ_2EXT)
311- 319 F9.4 mag e_Y-J2ext ? Error on extended source colour Y-J2
(YMJ_2EXTERR)
321- 328 F8.4 --- Mstat Merged N(0,1) stellarness-of-profile
statistic (MERGEDCLASSSTAT)
330- 331 I2 --- Mclass [-9/1]? Class flag (MERGEDCLASS) (1)
333- 342 F10.8 --- pStar Probability that the source is a star
(PSTAR)
344- 353 F10.8 --- pGal Probability that the source is a galaxy
(PGALAXY)
355- 364 F10.8 --- pNoise Probability that the source is noise
(PNOISE)
366- 371 F6.4 --- E(B-V) The galactic dust extinction value measured
from the Schlegel maps (EBV)
373- 388 F16.10 d Z-MJD ? Modified Julian Day in Z band (ZMJD)
390- 396 F7.4 mag Zpmag ? Extended source Z magnitude (Petrosian)
(ZPETROMAG)
398- 408 F11.4 mag e_Zpmag ? Error in extended source Z magnitude
(Petrosian) (ZPETROMAGERR)
410- 416 F7.4 mag Zap3 ? Default point source Z aperture corrected
magnitude (2.0 arcsec aperture diameter)
(ZAPERMAG3)
418- 427 F10.4 mag e_Zap3 ? Error in default point source Z aperture
corrected magnitude (2.0 arcsec aperture
diameter) (ZAPERMAG3ERR)
429- 435 F7.4 mag Zap6 ? Point source Z aperture corrected
magnitude (5.7 arcsec aperture diameter)
(ZAPERMAG6)
437- 448 F12.4 mag e_Zap6 ? Error in point source Z aperture corrected
magnitude (5.7 arcsec aperture diameter)
(ZAPERMAG6ERR)
450- 456 F7.4 mag Zapc3 ? Default extended source Z aperture
magnitude (2.0 arcsec aperture diameter)
(ZAPERMAGNOAPERCORR3)
458- 464 F7.4 mag Zapc6 ? Extended source Z aperture magnitude
(5.7 arcsec aperture diameter)
(ZAPERMAGNOAPERCORR6)
466- 472 F7.4 arcsec Zamaj ? Seeing corrected half-light,
semi-major axis in Z band (ZHLCORSMJRADAS)
474- 478 F5.3 --- Zell ? 1-b/a, where a/b=semi-major/minor axes
in Z (ZELL)
480- 486 F7.3 --- ZClassSt ? N(0,1) stellarness-of-profile statistic
in Z (ZCLASSSTAT)
488- 503 F16.10 d Y-MJD ? Modified Julian Day in Y band (YMJD)
505- 511 F7.4 mag Ypmag ? Extended source Y magnitude (Petrosian)
(YPETROMAG)
513- 523 F11.4 mag e_Ypmag ? Error in extended source Y magnitude
(Petrosian) (YPETROMAGERR)
525- 531 F7.4 mag Yap3 ? Default point source Y aperture corrected
magnitude (2.0 arcsec aperture diameter)
(YAPERMAG3)
533- 541 F9.4 mag e_Yap3 ? Error in default point source Y aperture
corrected magnitude (2.0 arcsec aperture
diameter) (YAPERMAG3ERR)
543- 549 F7.4 mag Yap6 ? Point source Y aperture corrected
magnitude (5.7 arcsec aperture diameter)
(YAPERMAG6)
551- 562 F12.4 mag e_Yap6 ? Error in point source y aperture corrected
magnitude (5.7 arcsec aperture diameter)
(YAPERMAG6ERR)
564- 570 F7.4 mag Yapc3 ? Default extended source Y aperture
magnitude (2.0 arcsec aperture diameter)
(YAPERMAGNOAPERCORR3)
572- 578 F7.4 mag Yapc6 ? Extended source Y aperture magnitude
(5.7 arcsec aperture diameter)
(YAPERMAGNOAPERCORR6)
580- 586 F7.4 arcsec Yamaj ? Seeing corrected half-light,
semi-major axis in Y band (YHLCORSMJRADAS)
588- 592 F5.3 --- Yell ? 1-b/a, where a/b=semi-major/minor axes
in Y (YELL)
594- 599 F6.3 arcsec Yxi ? Offset of Y detection from master position
(+east/-west) (YXI)
601- 606 F6.3 arcsec Yeta ? Offset of Y detection from master position
(+north/-south) (YETA)
608- 623 F16.10 d J-MJD ? Modified Julian Day in J band (JMJD)
625- 631 F7.4 mag Jpmag ? Extended source J magnitude (Petrosian)
(JPETROMAG)
633- 643 F11.4 mag e_Jpmag ? Error in extended source J magnitude
(Petrosian) (JPETROMAGERR)
645- 651 F7.4 mag Jap3 ? Default point source J aperture corrected
magnitude (2.0 arcsec aperture diameter)
(JAPERMAG3)
653- 662 F10.4 mag e_Jap3 ? Error in default point source J aperture
corrected magnitude (2.0 arcsec aperture
diameter) (JAPERMAG3ERR)
664- 670 F7.4 mag Jap6 ? Point source J aperture corrected
magnitude (5.7 arcsec aperture diameter)
(JAPERMAG6)
672- 682 F11.4 mag e_Jap6 ? Error in point source J aperture
corrected magnitude (5.7 arcsec aperture
diameter) (JAPERMAG6ERR)
684- 690 F7.4 mag Japc3 ? Default extended source J aperture
magnitude(2.0 arcsec aperture diameter)
(JAPERMAGNOAPERCORR3)
692- 698 F7.4 mag Japc6 ? Extended source J aperture magnitude
(5.7 arcsec aperture diameter)
(JAPERMAGNOAPERCORR6)
700- 706 F7.4 arcsec Jamaj ? Seeing corrected half-light,
semi-major axis in J band (JHLCORSMJRADAS)
708- 712 F5.3 --- Jell ? 1-b/a, where a/b=semi-major/minor axes
in J (JELL)
714- 720 F7.3 --- JclassSt ? N(0,1) stellarness-of-profile statistic
in J (JCLASSSTAT)
722- 727 F6.3 arcsec Jxi ? Offset of J detection from master position
(+east/-west) (JXI)
729- 734 F6.3 arcsec Jeta ? Offset of J detection from master position
(+north/-south) (JETA)
736- 751 F16.10 d J1-MJD ? Modified Julian Day in J1 band (J_1MJD)
753- 759 F7.4 mag J1pmag ? Extended source J1 magnitude
(Petrosian) (J_1PETROMAG)
761- 771 F11.4 mag e_J1pmag ? Error in extended source J1 magnitude
(Petrosian) (J_1PETROMAGERR)
773- 779 F7.4 mag J1ap3 ? Default point source J1 aperture
corrected magnitude (2.0 arcsec aperture
diameter) (J_1APERMAG3)
781- 789 F9.4 mag e_J1ap3 ? Error in default point source J1
aperture corrected magnitude (2.0 arcsec
aperture diameter) (J_1APERMAG3ERR)
791- 797 F7.4 mag J1ap6 ? Point source J1 aperture corrected
magnitude (5.7 arcsec aperture diameter)
(J_1APERMAG6)
799- 810 F12.4 mag e_J1ap6 ? Error in point source J1 aperture
corrected magnitude (5.7 arcsec
aperture diameter) (J_1APERMAG6ERR)
812- 818 F7.4 mag J1apc3 ? Default extended source J1 aperture
magnitude (2.0 arcsec aperture diameter)
(J_1APERMAGNOAPERCORR3)
820- 826 F7.4 mag J1apc6 ? Extended source J1 aperture magnitude
(5.7 arcsec aperture diameter)
(J_1APERMAGNOAPERCORR6)
828- 834 F7.4 arcsec J1amaj ? Seeing corrected half-light,
semi-major axis in J1 band
(J_1HLCORSMJRADAS)
836- 840 F5.3 --- J1ell ? 1-b/a, where a/b=semi-major/minor axes
in J1 (J_1ELL)
842- 848 F7.3 --- J1classSt ? N(0,1) stellarness-of-profile statistic
in J1 (J_1CLASSSTAT)
850- 855 F6.3 arcsec J1xi ? Offset of J1 detection from master
position (+east/-west) (J_1XI)
857- 862 F6.3 arcsec J1eta ? Offset of J1 detection from master
position (+north/-south) (J_1ETA)
864- 879 F16.10 d J2-MJD ? Modified Julian Day in J2 band (J_2MJD)
881- 887 F7.4 mag J2pmag ? Extended source J2 magnitude (Petrosian)
(J_2PETROMAG)
889- 898 F10.4 mag e_J2pmag ? Error in extended source J2 magnitude
(Petrosian) (J_2PETROMAGERR)
900- 906 F7.4 mag J2ap3 ? Default point source J2 aperture
corrected magnitude (2.0 arcsec aperture
diameter) (J_2APERMAG3)
908- 916 F9.4 mag e_J2ap3 ? Error in default point source J2
aperture corrected magnitude (2.0 arcsec
aperture diameter) (J_2APERMAG3ERR)
918- 924 F7.4 mag J2ap6 ? Point source J2 aperture corrected
magnitude (5.7 arcsec aperture diameter)
(J_2APERMAG6)
926- 937 F12.4 mag e_J2ap6 ? Error in point source J2 aperture
corrected magnitude (5.7 arcsec
aperture diameter) (J_2APERMAG6ERR)
939- 945 F7.4 mag J2apc3 ? Default extended source J2 aperture
magnitude (2.0 arcsec aperture diameter)
(J_2APERMAGNOAPERCORR3)
947- 953 F7.4 mag J2apc6 ? Extended source J2 aperture magnitude
(5.7 arcsec aperture diameter)
(J_2APERMAGNOAPERCORR6)
955- 961 F7.4 arcsec J2amaj ? Seeing corrected half-light,
semi-major axis in J2 band
(J_2HLCORSMJRADAS)
963- 967 F5.3 --- J2ell ? 1-b/a, where a/b=semi-major/minor axes
in J2 (J_2ELL)
969- 975 F7.3 --- J2classSt ? N(0,1) stellarness-of-profile statistic
in J2 (J_2CLASSSTAT)
977- 982 F6.3 arcsec J2xi ? Offset of J2 detection from master
position (+east/-west) (J_2XI)
984- 989 F6.3 arcsec J2eta ? Offset of J2 detection from master
position (+north/-south) (J_2ETA)
991-1006 F16.10 d H-MJD ? Modified Julian Day in H band (HMJD)
1008-1014 F7.4 mag Hpmag ? Extended source H magnitude
(Petrosian) (HPETROMAG)
1016-1026 F11.4 mag e_Hpmag ? Error in extended source H magnitude
(Petrosian) (HPETROMAGERR)
1028-1034 F7.4 mag Hap3 ? Default point source H aperture corrected
magnitude (2.0 arcsec aperture diameter)
(HAPERMAG3)
1036-1044 F9.4 mag e_Hap3 ? Error in default point source H aperture
corrected magnitude (2.0 arcsec aperture
diameter) (HAPERMAG3ERR)
1046-1052 F7.4 mag Hap6 ? Point source H aperture corrected
magnitude (5.7 arcsec aperture diameter)
(HAPERMAG6)
1054-1064 F11.4 mag e_Hap6 ? Error in point source H aperture
corrected magnitude (5.7 arcsec aperture
diameter) (HAPERMAG6ERR)
1066-1072 F7.4 mag Hapc3 ? Default extended source H aperture
magnitude (2.0 arcsec aperture diameter)
(HAPERMAGNOAPERCORR3)
1074-1080 F7.4 mag Hapc6 ? Extended source H aperture magnitude
(5.7 arcsec aperture diameter)
(HAPERMAGNOAPERCORR6)
1082-1088 F7.4 arcsec Hamaj ? Seeing corrected half-light,
semi-major axis in H band (HHLCORSMJRADAS)
1090-1094 F5.3 --- Hell ? 1-b/a, where a/b=semi-major/minor axes
in H (HELL)
1096-1102 F7.3 --- HclassSt ? N(0,1) stellarness-of-profile statistic
in H (HCLASSSTAT)
1104-1109 F6.3 arcsec Hxi ? Offset of H detection from master position
(+east/-west) (HXI)
1111-1116 F6.3 arcsec Heta ? Offset of H detection from master position
(+north/-south) (HETA)
1118-1133 F16.10 d Ks-MJD ? Modified Julian Day in Ks band (KSMJD)
1135-1141 F7.4 mag Kspmag ? Extended source Ks magnitude
(Petrosian) (KSPETROMAG)
1143-1152 F10.4 mag e_Kspmag ? Error in extended source Ks magnitude
(Petrosian) (KSPETROMAGERR)
1154-1160 F7.4 mag Ksap3 ? Default point source Ks aperture corrected
magnitude (2.0 arcsec aperture diameter)
(KSAPERMAG3)
1162-1169 F8.4 mag e_Ksap3 ? Error in default point source Ks aperture
corrected magnitude (2.0 arcsec aperture
diameter) (KSAPERMAG3ERR)
1171-1177 F7.4 mag Ksap6 ? Point source Ks aperture corrected
magnitude (5.7 arcsec aperture diameter)
(KSAPERMAG6)
1179-1190 F12.4 mag e_Ksap6 ? Error in point source Ks aperture
corrected magnitude (5.7 arcsec aperture
diameter) (KSAPERMAG6ERR)
1192-1198 F7.4 mag Ksapc3 ? Default extended source Ks aperture
magnitude (2.0 arcsec aperture diameter)
(KSAPERMAGNOAPERCORR3)
1200-1206 F7.4 arcsec Ksamaj ? Seeing corrected half-light,
semi-major axis in Ks band
(KSHLCORSMJRADAS)
1208-1212 F5.3 --- Ksell ? 1-b/a, where a/b = semi-major/minor axes
in Ks (KSELL)
1214-1220 F7.3 --- KsclassSt ? N(0,1) stellarness-of-profile statistic
in Ks (KSCLASSSTAT)
1222-1227 F6.3 arcsec Ksxi ? Offset of Ks detection from master
position (+east/-west) (KSXI)
1229-1234 F6.3 arcsec Kseta ? Offset of Ks detection from master
position (+north/-south) (KSETA)
1236 I1 --- prim [0/1] Primary source 1; secondary source 0
(PRIMARY_SOURCE)
--------------------------------------------------------------------------------
Note (1): Class flag as follows:
1 = galaxy
0 = noise
-1 = star
-2 = probable star
-3 = probable galaxy
-9 = saturated
--------------------------------------------------------------------------------
History:
* 25-Mar-2025: this ReadMe document was prepared from the ESO document at
https://www.eso.org/qi/catalog/show/320/
vikingcatdr4_description.v5.pdf
Acknowledgements:
Please include the following acknowledgment in any published material
that makes use of this data product: Based on data obtained from the
ESO Science Archive Facility with DOI:
https://doi.org/10.18727/archive/59
(End) Patricia Vannier [CDS] 25-Mar-2025