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J/ApJ/481/49        CFRS XIV. Field galaxies up to z=1 (Hammer+ 1997)
Canada-France Redshift Survey. XIV.
Spectral properties of field galaxies up to z=1.
       Hammer F., Flores H., Lilly S.J., Crampton D., Le Fevre O., Rola C.,
       Mallen-Ornelas G., Schade D., Tresse L.
      <Astrophys. J. 481, 49 (1997)>
      =1997ApJ...481...49H      (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry ; Galaxies, spectra ; Redshifts ;

Keywords: cosmology: observations - galaxies: abundances - galaxies: evolution -
          galaxies: ISM - galaxies: photometry - galaxies: stellar content

Description:
    The spectral properties of more than 400 Canada-France Redshift Survey
    (CFRS) galaxies and their changes over the redshift interval 0≤z≤1.3
    are investigated. Emission-line intensities and equivalent widths for
    accessible lines have been measured, as well as continuum color
    indices based on 200Å wide spectral regions.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       175      410   Photometry, spectral indices, and emission-line
                                   measurements (sample B)


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/464/79 : CFRS XI: High-redshift field galaxies morphology (Schade+ 1996)
 J/ApJ/499/112 : HST CFRS and LDSS redshift surveys. I.   (Brinchmann+ 1998)


Byte-by-byte Description of file: table1.dat

   Bytes Format      Units     Label     Explanations

   1-  7  A7         ---       CFRS      Canada-France Redshift Survey number
   9- 14  F6.4       ---       z         Redshift
  16- 20  F5.2       mag       Kmag      ?=99.99 K_AB_ magnitude (1)
  22- 27  F6.2       mag       MB        B absolute magnitude
  29- 34  F6.2       mag       M1um      ?=99.99 Absolute magnitude at 1µm
  36- 41  F6.3       ---       D3235     ?=99.000 UV color index D(3250-3550)(2)
  43- 47  F5.3       ---       e_D3235   ?=0.000 rms uncertainty on D3235
  49- 54  F6.3       ---       D3538     ?=99.000 Balmer index D(3550-3850) (3)
  56- 60  F5.3       ---       e_D3538   ?=0.000 rms uncertainty on D3538
  62- 67  F6.3       ---       D4000     ?=99.000 4000Å break index (4)
  69- 73  F5.3       ---       e_D4000   ?=0.000 rms uncertainty on D4000
  75- 80  F6.3       ---       D4151     ?=99.000 Red color index D(41-50) (5)
  82- 86  F5.3       ---       e_D4151   ?=0.000 rms uncertainty on D4151
  88- 93  F6.3       mag       Mg2       ?=99.000 Mg_2_ index (6)
  95- 99  F5.3       mag       e_Mg2     ?=0.000 rms uncertainty on Mg2
 101-105  I5   10-33nm.W/m2/Hz OII       ?=9999 O II emission-line intensity (7)
 107-113  F7.3 10-33nm.W/m2/Hz e_OII     ?=0.000 rms uncertainty on OII
 115-119  I5         0.1nm     W(OII)    ?=9999 O II equivalent width (7)
 121-127  F7.2       0.1nm     e_W(OII)  ?=0.00 rms uncertainty on W(OII)
 129-133  I5   10-33nm.W/m2/Hz OIII      ?=9999 OIII emission-line intensity (7)
 135-139  F5.1 10-33nm.W/m2/Hz e_OIII    ?=0.0 rms uncertainty on OIII
 141-145  I5         0.1nm     W(OIII)   ?=9999 O III equivalent width (7)
 147-151  F5.1       0.1nm    e_W(OIII)  ?=0.0 rms uncertainty on W(OIII)
 153-157  I5         0.1nm     W(Hbeta)  ?=9999 Hbeta equivalent width (7)
 159-162  F4.1       0.1nm   e_W(Hbeta)  ?=0.0 rms uncertainty on W(Hbeta)
 165-169  I5         0.1nm    W(Halpha)  ?=9999 Halpha equivalent width (7)
 171-175  F5.1       0.1nm  e_W(Halpha)  ?=0.0 rms uncertainty on W(Halpha)

Note (1): Magnitude is quoted with the AB normalization scheme (Oke,
           1974ApJS...27...21O)
Note (2): D(3250-3550)=fnu(3450-3650)/fnu(3150-3350), the ratio of the
           average flux density fnu in the bands 3450-3650Å and
           3150-3350Å at rest, which is mostly sensitive to hot stars.
Note (3): D(3550-3850)=fnu(3750-3950)/fnu(3450-3650), which is very
           sensitive to the population of A stars.
Note (4): D(4000) as defined by Bruzual (1983ApJ...273..105B), which is the
           ratio of the average flux density fnu in the bands 4050-4250Å
           and 3750-3950Å at rest; this index depends on both metallicity and
           stellar ages.
Note (5): D(41-50)=2.5log[fnu(4900-5100)/fnu(4050-4250)], which follows the
           definition of Kennicutt (1992ApJ...388..310K) and is rather
           independent of the hot star population (except for the youngest
           galaxies), while it varies with metalicity.
Note (6): Mg2 index, defined following Faber et al. (1977AJ.....82..941F)
           and Buzzoni et al. (1992AJ....103.1814B),
        Mg2=-2.5log[f(5156-5197.25)]/[0.39f(4897-4958.25)+0.61f(5303-5366.75)]
           f standing for fnu, where all the flux densities correspond to
           average values in the corresponding bands, either centered on the Mg
           feature or at the blue and red sides, respectively: this index
           depends on both temperature and metallicity (Faber et al.,
           1977AJ.....82..941F; Faber et al., 1985ApJS...57..711F;
           Davies et al., 1987ApJS...64..581D)
Note (7): 9999: when a line do not appear in the spectral range
          9998: when a line was not measurable because of instrumental reasons
     The intensity unit is the flux density integrated over the
     emission line  F(ν).dλ, expressed in
     10-29 erg.s-1.Hz-1.cm-2*Å = erg.Å.cm-2


History: From ApJ electronic version


References:
  Lilly et al.       Paper I.    1995ApJ...455...50L
  Le Fevre et al.    Paper II.   1995ApJ...455...60L
  Lilly et al.       Paper III.  1995ApJ...455...75L, Cat. J/ApJ/455/75
  Hammer et al.      Paper IV.   1995ApJ...455...88H, Cat. J/ApJ/455/88
  Crampton et al.    Paper V.    1995ApJ...455...96C
  Lilly et al.       Paper VI.   1996ApJ...460L...1L
  Hammer et al.      Paper VII.  1995MNRAS.276.1085H
  Le Fevre et al.    Paper VIII. 1996ApJ...461..534L
  Schade et al.      Paper IX.   1996ApJ...464...79S, Cat. J/ApJ/464/79
  Schade et al.      Paper X.    1996MNRAS.278...95S
  Schade D. et al.   Paper XI.   1996ApJ...464...79S, Cat. J/ApJ/464/79
  Tresse et al.      Paper XII.  1996MNRAS.281..847T
  Le Fevre et al.    Paper XIII. 1996BCFHT..34...10L
(End)                           James Marcout, Patricia Bauer [CDS]  13-Aug-1998