J/ApJ/464/79     CFRS XI: High-redshift field galaxies morphology (Schade+ 1996)
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Canada-France Redshift Survey. XI. Morphology of high-redshift field galaxies
from high-resolution ground-based imaging
       Schade D., Lilly S.J., Le Fevre O., Hammer H., Crampton D.
      <Astrophys. J. 464, 79 (1996)>
      =1996ApJ...464...79S
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ADC_Keywords: Galaxies, photometry ; Redshifts ; Morphology
Keywords: galaxies: distances and redshifts - galaxies: evolution -
          galaxies: photometry

Abstract:
    The 143 galaxies with secure redshifts (Z_median_=0.62) from the
    1415+52 field of the Canada-France Redshift Survey have been imaged
    with median seeing of 0.67" (FWHM). Structural parameters have been
    derived by fitting multicomponent models and the results confirm two
    phenomena seen in a smaller sample of galaxies imaged with the Hubble
    Space Telescope. First, 11+/-3% of the galaxies lie off the normal
    locus of color versus bulge fraction B/T. This class of objects ("blue
    nucleated galaxies," or BNGs) was identified using HST observations
    (Schade et al. 1995ApJ...451L...1S, hereafter CFRS IX), and it was
    shown that they are associated with peculiar/asymmetric structure and
    merger/interactions. The observed frequency of BNGs in this sample is
    14+/-4% 0.5<z<1.2 and 6^+6^_-3_% at 0.2<z<0.5, but the true frequency
    is likely to be a factor ~2 higher after corrections are made for the
    effect of asymmetric/peculiar structures. Galaxy disks at 0.5<z<1.1
    are found to have a mean rest-frame, inclination-corrected central
    surface brightness of {mu}_AB_(B)=19.8+/-0.1mag/arcsec^2^, ~1.6mag
    brighter than the Freeman (1970ApJ...160..811F) value. At low redshift
    (0.2<z<0.5) the mean surface brightness [{mu}_AB_(B)=21.3+/-0.25] is
    consistent with the Freeman value. These results are consistent with
    the HST observations. With larger numbers of galaxies and therefore
    more statistical weight they demonstrate the capabilities, and limits,
    of ground-based work in the study of galaxy morphology at high
    redshift.

File Summary:
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  FileName    Lrecl  Records   Explanations
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ReadMe           80        .   This file
table1.dat       47      143   Canada-France Redshift Survey Galaxies at z>0.5
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See also:
 J/ApJ/455/60 : CFRS II: 0000-00 and 1000+25 fields (Le Fevre+ 1995)
 J/ApJ/455/75 : CFRS III: 1415+52 and 2215+00 fields (Lilly+ 1995)
 J/ApJ/455/88 : CFRS IV: 0300+00 field (Hammer+ 1995)
 J/ApJ/481/49 : CFRS XIV. Field galaxies up to z=1 (Hammer+ 1997)

Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label     Explanations
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   1-  7  A7    ---     CFRS      Canada-France Redshift Survey designation
   9- 13  F5.3  ---     z         Redshift
  15- 19  F5.2  mag     Imag      I_AB_ magnitude (1)
  21- 24  F4.2  mag     V-I       (V-I)_AB_ colour index
  26- 31  F6.2  mag     MBmag     Absolute B_AB_ magnitude (2)
  33- 37  F5.2  mag     U-V       (U-V)_AB_ colour magnitude
  39- 42  F4.2  ---     B/T       Colour versus bulge fraction
  44- 47  F4.2  kpc     h         ? Scale length
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Note (1): Magnitude is quoted whit the AB normalization scheme (Oke,
           1974ApJS...27...21O)
Note (2): Absolute magnitudes assume H_0_=50km/s/Mpc, q_0_=0.5
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History: Prepared via OCR at CDS.

References:
    Lilly S.J. et al., Paper I.     =1995ApJ...455...50L
    Le Fevre O. et al.. Paper II.   =1995ApJ...455...60L, Cat. <J/ApJ/455/60>
    Lilly S.J. et al., Paper III.   =1995ApJ...455...75L, Cat. <J/ApJ/455/75>
    Hammer F. et al., Paper IV.     =1995ApJ...455...88H, Cat. <J/ApJ/455/88>
    Crampton D. et al., Paper V.    =1995ApJ...455...96C
    Lilly S. J. et al., Paper VI.   =1995ApJ...455..108L
    Hammer F. et al., Paper  VII.   =1995MNRAS.276.1085H
    Le Fevre O. et al., Paper VIII. =1996ApJ...461..534L
    Schade D. et al., Paper IX.     =1995ApJ...451L...1S
    Schade D. et al., Paper X.      =1996MNRAS.278...95S
    Tresse L. et al., Paper XII.    =1996MNRAS.281..847T
    Le Fevre et al., Paper XIII.    =1996BCFHT..34...10L
    Hammer et al., Paper XIV.       =1997ApJ...481...49H, Cat. <J/APJ/481/49>
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(End)                           James Marcout, Patricia Bauer [CDS]  27-Mar-1997