Access to Astronomical Catalogues

J/A+A/544/A156        UltraVISTA Catalogue Release DR1        (McCracken+, 2012)
UltraVISTA: a new ultra-deep near-infrared survey in COSMOS.
    McCracken H.J., Milvang-Jensen B., Dunlop J., Franx M., Fynbo J.P.U.,
    Le Fevre O., Holt J., Caputi K.I., Goranova Y., Buitrago F., Emerson J.P.,
    Freudling P. Hudelot W., Lopez-Sanjuan C., Magnard F., Mellier Y.,
    Moller P., Nilsson K.K., Sutherland W., Tasca L., Zabl J.
   <Astron. Astrophys. 544, A156 (2012)>
   =2012A&A...544A.156M
ADC_Keywords: Surveys ; Photometry, infrared

Keywords: surveys - galaxies: general - galaxies: high-redshift -
          cosmology: observations - large-scale structure of Universe

Abstract:
    In this paper we describe the first data release of the UltraVISTA
    near-infrared imaging survey of the COSMOS field. We summarise the key
    goals and design of the survey and provide a detailed description of
    our data reduction techniques. We provide stacked, sky-subtracted
    images in Y JHKs and narrow-band filters constructed from data
    collected during the first year of UltraVISTA observations.

Description:
    Matched source catalogue prepared for the first UltraVISTA (DR1
    catalogue release. To 5σ limit, our Ks -selected catalogue
    contains 216268 sources observed in Y, J, H and Ks bands over the
    full UltraVISTA deep area (∼1.3deg2), with NB118 observation over
    the "ultra-deep stripes" area.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
catalog.dat      466   331077   UltraVista catalogue release DR1
catalog.fits    2880    24382   FITS version of UltraVista catalogue release DR1


See also:
    II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)


Byte-by-byte Description of file: catalog.dat

   Bytes Format Units  Label     Explanations

   1-  9  A9    ---    ---       [UVISTADR1]
  11- 29  A19   ---   UVISTADR1  Source designation (JHHMMSS.ss+DDMMSS.s)
  31- 36  I6    ---    Seq       Source identification number
  38- 48  F11.7 deg    RAdeg     Right ascension in decimal degrees (J2000) (1)
  50- 60  F11.7 deg    DEdeg     Declination in decimal degrees (J2000) (1)
  62- 72  F11.4 pix    Xpos      X position on image (Ks stack)
  74- 84  F11.4 pix    Ypos      Y position on image (Ks stack)
      86  A1    ---    F         [FT] Bad region flag (FLAG_HJMCC) (2)
  88- 94  F7.5  mag    E(B-V)    Galactic reddening
  96-103  F8.4  mag    Yap2      ? Aperture Y AB magnitude in 2" diameter (3)
 105-116  F12.4 mag    e_Yap2    ? rms uncertainty on Yap2
 118-125  F8.4  mag    Yap7      ? Aperture Y AB magnitude in 7.1" diameter (3)
 127-138  F12.4 mag    e_Yap7    ? rms uncertainty on Yap7
 140-147  F8.4  mag    Ymag      ? VISTA Y AB magnitude (Y_AUTO) (3)
 149-158  F10.4 mag    e_Ymag    ? ms uncertainty on Ymag
 160-171  F12.3 pix    Yr        ? Radius which enclose 50% of the total
                                   Y flux (YFLUXRADIUS)
 173-174  I2    ---    Ysf       [0/19] SExtractor Y flag (4)
 176-182  F7.4  mag    Jap2      ? Aperture J AB magnitude in 2" diameter (3)
 184-192  F9.4  mag    e_Jap2    ? rms uncertainty on Jap2
 194-200  F7.4  mag    Jap7      ? Aperture J AB magnitude in 7.1" diameter (3)
 202-211  F10.4 mag    e_Jap7    ? rms uncertainty on Jap7
 213-220  F8.4  mag    Jmag      ? VISTA J AB magnitude (J_AUTO) (3)
 222-231  F10.4 mag    e_Jmag    ? rms uncertainty on Jmag
 233-244  F12.3 pix    Jr        ? Radius which enclose 50% of the total
                                   J flux (JFLUXRADIUS)
 246-247  I2    ---    Jsf       [0/19] SExtractor J flag (4)
 249-255  F7.4  mag    Hap2      ? Aperture H AB magnitude in 2" diameter (3)
 257-266  F10.4 mag    e_Hap2    ? rms uncertainty on Hap2
 268-274  F7.4  mag    Hap7      ? Aperture H AB magnitude in 7.1" diameter (3)
 276-285  F10.4 mag    e_Hap7    ? rms uncertainty on Hap7
 287-294  F8.4  mag    Hmag      ? VISTA H AB magnitude (H_AUTO) (3)
 296-305  F10.4 mag    e_Hmag    ? rms uncertainty on Hmag
 307-318  F12.3 pix    Hr        ? Radius which enclose 50% of the total
                                   H flux (HFLUXRADIUS)
 320-321  I2    ---    Hsf       [0/19] SExtractor H flag (4)
 323-329  F7.4  mag    Ksap2     ? Aperture Ks AB magnitude in 2" diameter (3)
 331-340  F10.4 mag    e_Ksap2   ? rms uncertainty on Ksap2
 342-348  F7.4  mag    Ksap7     ? Aperture Ks AB magnitude in 7.1" diameter (3)
 350-359  F10.4 mag    e_Ksap7   ? rms uncertainty on Ksap7
 361-367  F7.4  mag    Ksmag     ? VISTA Ks AB magnitude (KS_AUTO) (3)
 369-378  F10.4 mag    e_Ksmag   ? rms uncertainty on Ksmag
 380-389  F10.3 pix    Ksr       ? Radius which enclose 50% of the total
                                   Ks flux (KSFLUXRADIUS)
 391-392  I2    ---    Ksf       [0/19] SExtractor Ks flag (4)
 394-400  F7.4  mag    NB118ap2  ? Aperture NB118 AB mag. in 2" diameter (3)
 402-411  F10.4 mag  e_NB118ap2  ? rms uncertainty on NB118ap2
 413-419  F7.4  mag    NB118ap7  ? Aperture NB118 AB mag. in 7.1" diameter (3)
 421-430  F10.4 mag  e_NB118ap7  ? rms uncertainty on NB118ap7
 432-439  F8.4  mag    NB118     ? VISTA NB118 (1.18um) AB mag. (NB118_AUTO) (3)
 441-450  F10.4 mag    e_NB118   ? rms uncertainty on NB118
 452-463  F12.3 pix    NB118r    ? Radius which enclose 50% of the total NB118
                                   flux (NB118FLUXRADIUS)
 465-466  I2    ---    NB118sf   [0/19] SExtractor NB118 flag (4)

Note (1): based on COSMOS astrometric reference frame.

Note (2): This bad region flag only indicates objects (with a flag value of T)
  at the edge of the Ks detection image; bright stars are not flagged in this
  catalogue version.
Note (3): All magnitudes are in AB system, in the VISTA instrumental
   magnitude system.
Note (4): for each band, the SExtrator flag is reported indicating if an object
   is blended or has otherwise corrupter photometric measurements.
   To select objects with non-corrupted photometry for the NB118 data, one
   should select in addition only objects with NB118flag<1.
   The best possible object sample are those objects which have all flags
   equal to zero in all bands.


Acknowledgements:
    Henry Joy McCracken, hjmcc(at)iap.fr
(End)                                        Patricia Vannier [CDS]  08-Aug-2012