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J/ApJS/127/1  UGRK Photometry in the Hubble Deep field region    (Hogg+, 2000)
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Caltech Faint Galaxy Redshift Survey. IX. Source Detection and Photometry
in the Hubble Deep Field Region
    Hogg D.W., Pahre M.A., Adelberger K.L., Blandford R., Cohen J.G.,
    Gautier T.N., Jarrett T., Neugebauer G., Steidel C.C.
   <Astrophys. J. Suppl. Ser. 127, 1 (2000)>
   =2000ApJS..127....1H
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ADC_Keywords: Colors ; Galaxies, photometry ; Photometry, CCD
Keywords: cosmology: observations - galaxies: evolution - galaxies:
          fundamental parameters - galaxies: photometry

Abstract:
    Detection and photometry of sources in the U_n_, G, {R}, and K_s_ bands
    in a 9x9 arcmin^2^ region of the sky, centered on the Hubble Deep
    Field, are described. The data permit construction of complete
    photometric catalogs to roughly U_n_=25, G=26, {R}=25.5, K_s_=20
    mag and significant photometric measurements somewhat fainter. Galaxy
    catalogs selected in the {R} and K_s_ bands are presented, containing
    3607 and 488 sources in field areas of 74.8 and 59.4arcmin^2^, to
    {R}=25.5 and K_s_=20mag.

Description:
    For visual data, U_n_(=0.53F300W+0.47F450W-0.29mag),
    G (=0.83F450W+0.18F606W-0.07mag), and
    {R} (=0.46F606W+0.54F814W-0.02mag) images taken with the COSMIC camera
    (Kells et al., 1998PASP..110.1487K) at the prime focus of the 200 inch
    Hale Telescope at the Palomar Observatory were used. The U_n_, G, and
    {R} filters are described in Steidel & Hamilton (1993AJ....105.2017S);
    briefly, they have effective wavelengths of 3570, 4830, and 6930 {AA},
    FWHM bandpasses of 700, 1200, and 1500{AA}, and zero-magnitude flux
    densities of roughly 1550, 3890, and 2750Jy. These magnitudes are Vega
    relative, not AB. For near-infrared data, an 8' diameter circular
    region centered on the HDF was imaged on 1997 March 19 - 21 using a
    K_s_ filter with a near-infrared camera (Jarrett et al., 1994) mounted
    at the prime focus of the 200 inch Hale Telescope. The K_s_ filter has
    an effective wavelength of 2.15 {mu}m, a FWHM bandpass of 0.3 {mu}m,
    and a zero-magnitude flux density of roughly 708Jy.

File Summary:
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 FileName      Lrecl  Records   Explanations
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ReadMe            80        .   This file
table2.dat        90     3606   {R}-selected catalog in the HDF region
table3.dat        89      487   K_s_ Selected catalog
table4.dat        89       22   Supplemental catalog
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See also:
   J/A+AS/129/583 : Hubble Deep Field surface photometry (Fasano+ 1998)
   J/AJ/112/1335  : Hubble Deep Field observations (Williams+ 1996)
   J/AJ/117/17    : Hubble Deep Field near-IR obs. (Thompson+, 1999)

Byte-by-byte Description of file: table*.dat
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   Bytes Format Units   Label     Explanations
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   1-  2  I2    h       RAh       Right ascension (J2000)
   4-  5  I2    min     RAm       Right ascension (J2000)
   7- 11  F5.2  s       RAs       Right ascension (J2000)
      13  A1    ---     DE-       Declination (J2000)
  14- 15  I2    deg     DEd       Declination (J2000)
  17- 18  I2    arcmin  DEm       Declination (J2000)
  20- 23  F4.1  arcsec  DEs       Declination (J2000)
  25- 29  F5.2  mag     Rmag      ? {R} magnitude (K_s_ magnitude in table3)
      30  A1    ---   n_Rmag      [*] Note (1)
  31- 36  F6.1  ---     S/NR      Total magnitude signal to noise in Rmag
  38- 42  F5.2  mag     (U-G)     ? The (U_n_-G) color
  44- 48  F5.2  mag     (G-R)     ? The (G-R) color
  50- 54  F5.2  mag     (R-K)     ? The (R-K_s_) color
  56- 62  F7.2  ---     ApS/NU    ? Signal to noise for the N_U_ band aperture
                                   magnitude used in computing colors
  64- 71  F8.2  ---     ApS/NG    ? Signal to noise for the G band aperture
                                   magnitude used in computing colors
  73- 79  F7.2  ---     ApS/NR    ? Signal to noise for the {R} band aperture
                                   magnitude used in computing colors
  81- 89  F9.2  ---     ApS/NK    ? Signal to noise for the K_s_ band aperture
                                   magnitude used in computing colors
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Note (1): In table4, the original data for "12 37 00.10 +62 12 19.8" were
           Rmag  S/N  U-G  G-R  R-K   S/NU  S/NG  S/NR  S/NK
          102.9 -0.3  ---  ---  ---  -0.54  1.42 -0.31  2.12
           transformed in
          ---  102.9 -0.3 ---  ---   -0.54  1.42 -0.31  2.12
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History:
        From ApJ electronic edition

References:
   Jarrett, T. H., Beichman, C., Van Buren, D., Gautier, N., & Bruce, C.
       1994, in Infrared Astronomy with Arrays: The Next Generation, ed. I.
       McLean (Dordrecht: Kluwer), 293
   (Paper VII) Cohen+ 1999ApJS..120..171C
   (Paper VIII) Cohen+ 1999ApJ...512...30C
   (Paper XI) Carlberg+ 2000ApJ...532L...1C
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(End)                                          Greg Schwarz [AAS]    23-May-2000