ACDS V10.0 - Detailed Description of II/367

ACDS V10.0 - Sun Jan 19 02:05:38 CET 2025

| # Detailed Description of II/367 : The VISTA Hemisphere Survey (VHS) catalog DR5 (McMahon+, 2020) |

Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.

    II/367      The VISTA Hemisphere Survey (VHS) catalog DR5      (McMahon+, 2020)
    ================================================================================
    VISTA Hemisphere Survey band-merged multi-waveband catalogues (VHS) DR5
       McMahon, R. G., Banerji, M., Gonzalez, E., Koposov, S. E., Bejar, V. J.,
       Lodieu, N., Rebolo, R., The VHS Collaboration
       <The Messenger. 154, 35-37 (2013)>
       =2021yCat.2367....0M
       =2013Msngr.154...35M
    ================================================================================
    ADC_Keywords: Photometry, infrared ; Surveys

    Mission_Name: ESO

    Abstract:
        This multi-band source catalogue provides aperture photometry in four
        near infrared broad-band filters: Y, J, H and Ks for almost 1.4
        billion detections. The total coverage of the VHS survey is almost
        17000 square degrees in the South Hemisphere.

    Description:
        Observations were made with the VIRCAM instrument on the ESO-VISTA
        telescope between 2009-11-04T12:29:43 and 2017-04-01T14:59:29 in Y, J,
        H and Ks filters.

    Acknowledging the VHS in publications:
        Please include the following acknowledgment in any published material
        that makes use of this data products: Based on observations made with
        ESO Telescopes at the La Silla or Paranal Observatories under
        programme ID(s) 179.A-2010(A), 179.A-2010(B), 179.A-2010(C),
        179.A-2010(D), 179.A-2010(E), 179.A-2010(F), 179.A-2010(G),
        179.A-2010(H), 179.A-2010(I), 179.A-2010(J), 179.A-2010(K),
        179.A-2010(L), 179.A-2010(M), 179.A-2010(N), 179.A-2010(O).

    File Summary:

           FileName      Lrecl  Records   Explanations

    ×                   80        .   This file
    × ReadMe            80        .   This file
    × vhs_dr5.sam     1110     1000   VISTA Hemisphere Survey band-merged
                                 multi-waveband catalogues (VHS) DR5 (version 3);
                                 sample output (on a total of 1,374,207,485 sources)

    See also:
     II/359 : The VISTA Hemisphere Survey (VHS) catalog DR4.1 (McMahon+, 2013)
     http://www.vista-vhs.org/   : VHS home page
     http://horus.roe.ac.uk/vsa/ : VISTA Science Archive home page
     http://www.eso.org/rm/api/v1/public/releaseDescriptions/144 : ESO Phase 3,
                                                                 VHS DR5 description

    Byte-by-byte Description of file:  vhs_dr5.sam

       Bytes Format  Units     Label       Explanations

       1- 12  I12    ---       SrcID       Unique ID of this merged detection as
                                            assigned by merge algorithm
                                            unless PrioOrSec!=0 (SOURCEID)
      14- 23  F10.6  deg       RAdeg       Celestial Right Ascension (J2000)
                                            (RA2000)
      25- 34  F10.6  deg       DEdeg       [-90/1.5] Celestial Declination (J2000)
                                            (DEC2000)
      36- 58  A23    ---       Name        Source name in IAU convention
                                            (VHS JHHMMSS.ss+DDMMSS.s) (SOURCENAME)
      60- 65  I6     ---       cuEventID   [587931] UID of curation event giving
                                            rise to this record (always "587931")
      67- 78  I12    ---       FrameID     UID of the set of frames that this
                                            merged source comes from (FRAMESETID)
      80- 89  F10.6  deg       GLON        Galactic longitude (L)
      91-100  F10.6  deg       GLAT        Galactic latitude (B)
     102-113  I12    ---       PriOrSec    Seam code for a unique (=0) or
                                            duplicated (!=0) source (5)
     115-122  F8.4   mag       Y-Jpnt      [-12.1/10.3]? Point source color Y-J
                                            (using aperMag3) (YMJPNT)
     124-132  F9.4   mag       e_Y-Jpnt    [4E-4/5999]? Error on point source
                                            color Y-J (YMJPNTERR)
     134-141  F8.4   mag       J-Hpnt      [-11.3/9.7]? Point source color J-H
                                            (using aperMag3) (JMHPNT)
     143-150  F8.4   mag       e_J-Hpnt    [5E-4/744]? Error on point source
                                            color J-H (JMHPNTERR)
     152-159  F8.4   mag       H-Kspnt     [-10.7/11.3]? Point source color H-Ks
                                            (using aperMag3) (HMKSPNT)
     161-168  F8.4   mag       e_H-Kspnt   [5E-4/627]? Error on point source
                                            color H-Ks (HMKSPNTERR)
     170-177  F8.4   mag       J-Kspnt     [-12/21.4]? Point source color J-Ks
                                            (using aperMag3) (JMKSPNT)
     179-188  F10.4  mag       e_J-Kspnt   [5E-4/13621]? Error on point source
                                            color J-Ks (JMKSPNTERR)
     190-197  F8.4   mag       Y-Jext      [-12/10.3]? Extended source color Y-J
                                            (using aperMagNoAperCorr3) (YMJEXT)
     199-207  F9.4   mag       e_Y-Jext    [4E-4/5999]? Error on extended source
                                            color Y-J (YMJEXTERR)
     209-216  F8.4   mag       J-Hext      [-11.2/9.8]? Extended source color J-H
                                            (using aperMagNoAperCorr3) (JMHEXT)
     218-225  F8.4   mag       e_J-Hext    [5E-4/744]? Error on extended source
                                            color J-H (JMHEXTERR)
     227-234  F8.4   mag       H-Ksext     [-10.6/11.2]? Extended source color
                                            H-Ks (using aperMagNoAperCorr3)
                                            (HMKSEXT)
     236-243  F8.4   mag       e_H-Ksext   [5E-4/627]? Error on extended source
                                            color H-Ks (HMKSEXTERR)
     245-252  F8.4   mag       J-Ksext     [-11.8/22.1]? Extended source color
                                            J-Ks (using aperMagNoAperCorr3)
                                            (JMKSEXT)
     254-263  F10.4  mag       e_J-Ksext   [5E-4/13621]? Error on extended source
                                            color J-Ks (JMKSEXTERR)
     265-273  F9.4   ---       Mstat       [-373/538] Merged N(0,1)
                                            stellarness-of-profile statistic
                                            (MERGEDCLASSSTAT) (1)
     275-276  I2     ---       Mclass      [-3/1] Class flag
                                            (MERGEDCLASS) (2)
     278-285  F8.6   ---       pStar       [0/1] Probability that the source is a
                                            star
     287-294  F8.6   ---       pGal        [0/1] Probability that the source is a
                                            galaxy (PGALAXY)
     296-303  F8.6   ---       pNoise      [0/1] Probability that the source is
                                            noise
     305-311  F7.4   mag       E(B-V)      [4E-4/41] The galactic dust extinction
                                            value measured from the Schlegel
                                            (1998ApJ...500..525S) maps (EBV)
     313-319  F7.4   mag       AY          [5E-4/53] The galactic extinction
                                            correction in the Y band
     321-327  F7.4   mag       AJ          [4E-4/38] The galactic extinction
                                            correction in the J band
     329-335  F7.4   mag       AH          [2E-4/24] The galactic extinction
                                            correction in the H band
     337-343  F7.4   mag       AKs         [1E-4/16] The galactic extinction
                                            correction in the Ks band
     345-356  F12.6  d         YMJD        [55160.2/57811.2]? Modified Julian Day
                                            in Y band
     358-364  F7.4   mag       Ypmag       [3.6/37]? Extended source Y (Vega) mag
                                            (Petrosian) (YPETROMAG) (3)
     366-372  F7.4   mag       e_Ypmag     [0/100]? Error in extended source Y mag
                                            (Petrosian) (YPETROMAGERR) (3)
     374-380  F7.4   mag       Yap3        [4.2/34]? Default point source Y
                                            aperture corrected Vega mag (2.0" diam)
                                            (YAPERMAG3) (3)
     382-388  F7.4   mag       e_Yap3      [1E-4/100]? Error in default
                                            point/extended source Y mag
                                            (YAPERMAG3ERR) (3)
     390-396  F7.4   mag       Yap4        [4.1/34]? Point source Y aperture
                                            corrected Vega mag (2.8" aperture diam)
                                            (YAPERMAG4) (3)
     398-404  F7.4   mag       e_Yap4      [1E-4/100]? Error in point/extended
                                            source Y mag (2.8 arcsec aperture diam)
                                            (YAPERMAG4ERR) (3)
     406-412  F7.4   mag       Yap6        [3.1/38]? Point source Y aperture
                                            corrected Vega mag (5.7" aperture diam)
                                            (YAPERMAG6) (3)
     414-420  F7.4   mag       e_Yap6      [1E-4/100]? Error in point/extended
                                            source Y mag (5.7 arcsec aperture diam)
                                            (YAPERMAG6ERR) (3)
     422-428  F7.4   ---       Yapc3       [4.6/35]? Default extended source Y
                                            aperture Vega mag (2.0 arcsec diam)
                                            (YAPERMAGNOAPERCORR3)
     430-436  F7.4   mag       Yapc4       [4.4/35]? Extended source Y aperture
                                            Vega mag (2.8 arcsec aperture diameter)
                                            (YAPERMAGNOAPERCORR4)
     438-444  F7.4   mag       Yapc6       [3.2/39]? Extended source Y aperture
                                            Vega mag (5.7 arcsec aperture diameter)
                                            (YAPERMAGNOAPERCORR6)
     446-452  F7.4   arcsec    Yamaj       [0/19]? Seeing corrected half-light,
                                            semi-major axis in Y band
                                            (YHLCORSMJRADAS)
     454-461  F8.4   pix       Yrms        [0.7/530]? RMS of axes of ellipse fit
                                            in Y (YGAUSIG)
     463-468  F6.4   ---       Yell        [0/1]? 1-b/a, where
                                            a/b=semi-major/minor axes in Y
     470-474  F5.1   deg       YPA         [0/180]? Ellipse fit celestial
                                            orientation in Y
     476-477  I2     ---       Yerrbits    [-1/28] Processing warning/error
                                            bitwise flags in Y
     479-485  F7.3   ---       Yavgap3     [0/112]? Average confidence in 2 arcsec
                                            diam default aperture 3 Y (YAVERAGECONF)
     487-488  I2     ---       Yclass      [-2/1] Discrete image classification
                                            flag in Y
     490-497  F8.3   ---       YclasSt     [-156/444]? N(0,1)
                                            stellarness-of-profile statistic in Y
                                            (YCLASSSTAT)
     499-506  I8     ---       Yperrbits   [0/12587216] Additional WFAU
                                            post-processing error bits in Y (4)
     508-514  I7     ---       Yseq        [0/1413053]? The running number of the
                                            Y detection (YSEQNUM)
     516-527  F12.6  d         JMJD        [55139/57844.2]? Modified Julian Day in
                                            J band
     529-536  F8.4   mag       Jpmag       [-24/38]? Extended source J (Vega) mag
                                            (Petrosian) (JPETROMAG) (3)
     538-544  F7.4   mag       e_Jpmag     [0/100]? Error in extended source J mag
                                            (Petrosian) (JPETROMAGERR) (3)
     546-553  F8.4   mag       Jap3        [-21.1/34.1]? Default point source J
                                            aperture corrected Vega mag (2.0" diam)
                                            (JAPERMAG3) (3)
     555-561  F7.4   mag       e_Jap3      [0/100]? Error in default
                                            point/extended source J mag
                                            (JAPERMAG3ERR) (3)
     563-570  F8.4   mag       Jap4        [-21.2/39]? Point source J aperture
                                            corrected Vega mag (2.8" aperture diam)
                                            (JAPERMAG4) (3)
     572-578  F7.4   mag       e_Jap4      [0/100]? Error in point/extended source
                                            J mag (2.8 arcsec aperture diam)
                                            (JAPERMAG4ERR) (3)
     580-587  F8.4   mag       Jap6        [-21.7/39]? Point source J aperture
                                            corrected Vega mag (5.7" aperture diam)
                                            (JAPERMAG6) (3)
     589-595  F7.4   mag       e_Jap6      [0/100]? Error in point/extended source
                                            J mag (5.7 arcsec aperture diam)
                                            (JAPERMAG6ERR) (3)
     597-604  F8.4   mag       Japc3       [-20.5/35]? Default extended source J
                                            aperture Vega mag (2.0 arcsec diam)
                                            (JAPERMAGNOAPERCORR3)
     606-613  F8.4   mag       Japc4       [-21/39]? Extended source J aperture
                                            Vega mag (2.8 arcsec aperture diameter)
                                            (JAPERMAGNOAPERCORR4)
     615-622  F8.4   mag       Japc6       [-22/39]? Extended source J aperture
                                            Vega mag (5.7 arcsec aperture diameter)
                                            (JAPERMAGNOAPERCORR6)
     624-630  F7.4   arcsec    Jamaj       [0/19]? Seeing corrected half-light,
                                            semi-major axis in J band
                                            (JHLCORSMJRADAS)
     632-639  F8.4   pix       Jrms        [0.7/584]? RMS of axes of ellipse fit
                                            in J (JGAUSIG)
     641-646  F6.4   ---       Jell        [0/1]? 1-b/a, where
                                            a/b=semi-major/minor axes in J
     648-652  F5.1   deg       JPA         [0/180]? Ellipse fit celestial
                                            orientation in J
     654-655  I2     ---       Jerrbits    [-1/28]? Processing warning/error
                                            bitwise flags in J
     657-663  F7.3   ---       Javgap3     [0/112]? Average confidence in 2 arcsec
                                            diam default aperture 3 J (JAVERAGECONF)
     665-666  I2     ---       Jclass      [-2/1]? Discrete image classification
                                            flag in J
     668-675  F8.3   ---       JclasStat   [-373/458]? N(0,1)
                                            stellarness-of-profile statistic in J
                                            (JCLASSSTAT)
     677-684  I8     ---       Jperrbits   [0/12587216]? Additional WFAU
                                            post-processing error bits in J (4)
     686-692  I7     ---       Jseq        [1/1661208]? The running number of the
                                            J detection (JSEQNUM)
     694-702  F9.6   arcsec    Jxi         [-2/2]? Offset of J detection from
                                            master position (+east/-west)
     704-712  F9.6   arcsec    Jeta        [-2/2]? Offset of J detection from
                                            master position (+north/-south)
     714-725  F12.6  d         HMJD        [55139/56074.2]? Modified Julian Day in
                                            H band
     727-734  F8.4   mag       Hpmag       [-24/36]? Extended source H (Vega) mag
                                            (Petrosian) (HPETROMAG) (3)
     736-742  F7.4   mag       e_Hpmag     [0/100]? Error in extended source H mag
                                            (Petrosian) (HPETROMAGERR) (3)
     744-751  F8.4   mag       Hap3        [-21.5/29]? Default point source H
                                            aperture corrected Vega mag (2.0" diam)
                                            (HAPERMAG3) (3)
     753-759  F7.4   mag       e_Hap3      [0/100]? Error in default
                                            point/extended source H mag
                                            (HAPERMAG3ERR) (3)
     761-768  F8.4   mag       Hap4        [-22/30.1]? Point source H aperture
                                            corrected Vega mag (2.8" aperture diam)
                                            (HAPERMAG4) (3)
     770-776  F7.4   mag       e_Hap4      [0/100]? Error in point/extended source
                                            H mag (2.8 arcsec aperture diam)
                                            (HAPERMAG4ERR) (3)
     778-785  F8.4   mag       Hap6        [-22.2/35]? Point source H aperture
                                            corrected Vega mag (5.7" aperture diam)
                                            (HAPERMAG6) (3)
     787-793  F7.4   mag       e_Hap6      [0/100]? Error in point/extended source
                                            H mag (5.7 arcsec aperture diam)
                                            (HAPERMAG6ERR) (3)
     795-802  F8.4   mag       Hapc3       [-21/29.1]? Default extended source H
                                            aperture Vega mag (2.0 arcsec diam)
                                            (HAPERMAGNOAPERCORR3)
     804-811  F8.4   mag       Hapc4       [-21.4/30.3]? Extended source H
                                            aperture Vega mag
                                            (2.8 arcsec aperture diameter)
                                            (HAPERMAGNOAPERCORR4)
     813-820  F8.4   mag       Hapc6       [-22.2/35]? Extended source H aperture
                                            Vega mag (5.7 arcsec aperture diameter)
                                            (HAPERMAGNOAPERCORR6)
     822-828  F7.4   arcsec    Hamaj       [0/19]? Seeing corrected half-light,
                                            semi-major axis in H band
                                            (HHLCORSMJRADAS)
     830-837  F8.4   pix       Hrms        [0.7/584]? RMS of axes of ellipse fit
                                            in H (HGAUSIG)
     839-844  F6.4   ---       Hell        [0/1]? 1-b/a, where
                                            a/b=semi-major/minor axes in H
     846-850  F5.1   deg       HPA         [0/180]? Ellipse fit celestial
                                            orientation in H
     852-853  I2     ---       Herrbits    [-1/28]? Processing warning/error
                                            bitwise flags in H
     855-861  F7.3   ---       Havgap3     [0/112]? Average confidence in 2 arcsec
                                            diam default aperture 3 H (HAVERAGECONF)
     863-864  I2     ---       Hclass      [-2/1]? Discrete image classification
                                            flag in H
     866-872  F7.3   ---       HclasSt     [-96/383]? N(0,1)
                                            stellarness-of-profile statistic in H
                                            (HCLASSSTAT)
     874-881  I8     ---       Hperrbits   [0/12587216]? Additional WFAU
                                            post-processing error bits in H (4)
     883-888  I6     ---       Hseq        [1/125514]? The running number of the H
                                            detection (HSEQNUM)
     890-898  F9.6   arcsec    Hxi         [-2/2]? Offset of H detection from
                                            master position (+east/-west)
     900-908  F9.6   arcsec    Heta        [-2/2]? Offset of H detection from
                                            master position (+north/-south)
     910-921  F12.6  d         KsMJD       [55139/57844.2]? Modified Julian Day in
                                            Ks band
     923-930  F8.4   mag       Kspmag      [-20.3/34]? Extended source Ks (Vega) mag
                                            (Petrosian) (KSPETROMAG) (3)
     932-938  F7.4   mag       e_Kspmag    [0/100]? Error in extended source Ks
                                            mag (Petrosian) (KSPETROMAGERR) (3)
     940-947  F8.4   mag       Ksap3       [-33.5/31]? Default point source Ks
                                            aperture corrected Vega mag (2.0" diam)
                                            (KSAPERMAG3) (3)
     949-955  F7.4   mag       e_Ksap3     [0/96]? Error in default point/extended
                                            source Ks mag (KSAPERMAG3ERR) (3)
     957-964  F8.4   mag       Ksap4       [-33.4/36]? Point source Ks aperture
                                            corrected Vega mag (2.8" aperture diam)
                                            (KSAPERMAG4) (3)
     966-972  F7.4   mag       e_Ksap4     [0/100]? Error in point/extended source
                                            Ks mag (2.8 arcsec aperture diam)
                                            (KSAPERMAG4ERR) (3)
     974-981  F8.4   mag       Ksap6       [-33.3/37]? Point source Ks aperture
                                            corrected Vega mag (5.7" aperture diam)
                                            (KSAPERMAG6) (3)
     983-989  F7.4   mag       e_Ksap6     [0/100]? Error in point/extended source
                                            Ks mag (5.7 arcsec aperture diam)
                                            (KSAPERMAG6ERR) (3)
     991-998  F8.4   mag       Ksapc3      [-33.4/32]? Default extended source Ks
                                            aperture Vega mag (2.0 arcsec diam)
                                            (KSAPERMAGNOAPERCORR3)
     1000-1007  F8.4   mag       Ksapc4      [-33.3/36]? Extended source Ks aperture
                                            Vega mag (2.8 arcsec aperture diameter)
                                            (KSAPERMAGNOAPERCORR4)
     1009-1016  F8.4   mag       Ksapc6      [-33.3/37.1]? Extended source Ks
                                            aperture Vega mag
                                            (5.7 arcsec aperture diameter)
                                            (KSAPERMAGNOAPERCORR6)
     1018-1024  F7.4   arcsec    Ksamaj      [0/19]? Seeing corrected half-light,
                                            semi-major axis in Ks band
                                            (KSHLCORSMJRADAS)
     1026-1033  F8.4   pix       Ksrms       [0.7/549]? RMS of axes of ellipse fit
                                            in Ks (KSGAUSIG)
     1035-1040  F6.4   ---       Ksell       [0/1]? 1-b/a, where
                                            a/b=semi-major/minor axes in Ks
     1042-1046  F5.1   deg       KsPA        [0/180]? Ellipse fit celestial
                                            orientation in Ks
     1048-1049  I2     ---       Kserrbits   [-1/28]? Processing warning/error
                                            bitwise flags in Ks
     1051-1057  F7.3   ---       Ksavgap3    [0/112]? Average confidence in 2 arcsec
                                            diam default aperture 3 Ks
                                            (KSAVERAGECONF)
     1059-1060  I2     ---       Ksclass     [-2/1]? Discrete image classification
                                            flag in Ks
     1062-1069  F8.3   ---       KsclasSt    [-108/385]? N(0,1)
                                            stellarness-of-profile statistic in Ks
                                            (KSCLASSSTAT)
     1071-1078  I8     ---       Ksperrbits  [0/12587216]? Additional WFAU
                                            post-processing error bits in Ks (4)
     1080-1086  I7     ---       Ksseq       [1/1455550]? The running number of the
                                            Ks detection (KSSEQNUM)
     1088-1096  F9.6   arcsec    Ksxi        [-2/2]? Offset of Ks detection from
                                            master position (+east/-west)
     1098-1106  F9.6   arcsec    Kseta       [-2/2]? Offset of Ks detection from
                                            master position (+north/-south)
     1108-1110  F3.1   ---       prim        [0/1]? Flag indicates primary sources
                                            (=1), otherwise (=0) (PRIMARY_SOURCE)

    Note (1): This profile classification statistic is a continuously distributed,
        Gaussian N(0,1) (i.e. zero mean, unit variance) statistic formed from
        the available individual classification statistics by averaging them
        and multiplying by N1/2 such that cuts on mergedClassStat result in
        completeness being independent of number of frames an object appears
        on, but with reliability improving with the number of frames.
    Note (2): Class flag from available measurements as follows:
        1 = Galaxy (522,436,266 occurrences);
        0 = Noise (25,899,664 occurrences);
       -1 = Star (631,842,962 occurrences);
       -2 = Probable star (180,291,372 occurrences);
       -3 = Probable galaxy (13,737,221 occurrences);
    Note (3): Magnitudes with errors >100mag have been set to null value by CDS;
               their errors have been set to 100mag.
    Note (4): Post-processing error quality bit flags assigned to detections in the
        archive curation procedure for survey data. From least to most
        significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7)
        corresponds to information on generally innocuous conditions that are
        nonetheless potentially significant as regards the integrity of that
        detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits
        -3 to 23) corresponds to important warnings; and finally byte 3 (bits
        0 to 31) corresponds to severe warnings.
        See http://horus.roe.ac.uk/vsa/ppErrBits.html
    Note (5): If a source is not found to be duplicated in overlap regions, then
        priOrSec=0; if a source is duplicated, then priOrSec will be set to
        the frameSetID of the source that should be considered the best one to
        use out of the set of duplicates.

    History:
        Downloaded from http://www.eso.org/qi/
    ================================================================================
    (End)                               F.-X. Pineau, E. Perret [CDS]    25-Jan-2021