CDROM/APJS/V94/P687    Old Stellar Populations. V. (Worthey+ 1994)
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Old Stellar Populations. V. Absorption Feature Indices for the Complete
Lick/IDS Sample of Stars
      Guy Worthey, S. M. Faber, J. Jesus Gonzalez, & D. Burstein
      <1994, ApJS, 94, 687>
      =1994ApJS...94..687W
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Abstract:
  Twenty-one optical absorption features, 11 of which have been
  previously defined, are automatically measured in a sample of 460
  stars.  Following Gorgas et al., the indices are summarized in fitting
  functions that give index strengths as functions of stellar
  temperature, gravity, and [Fe/H].  This project was carried out with
  the purpose of predicting index strengths in the integrated light of
  stellar populations of different ages and metallicities, but the data
  should be valuable for stellar studies in the Galaxy as well.  Several
  of the new indices appear to be promising indicators of metallicity
  for old stellar populations.  A complete list of index data and
  atmospheric parameters is available in computer-readable form.


Keywords: galaxies: stellar content -- stars: abundances -- stars: 
  atmospheres -- stars: fundamental parameters

Description:
  Detailed documentation has been supplied by the authors in file tablea1.doc.
  
File Summary:
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File Name    Lrecl    Records    Explanations
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tablea1.doc    277        354    Author-supplied documentation
tablea1.dat    319        460    Collected indices for published stars
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Byte-by-byte Description of file: tablea1.dat
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   Bytes Format  Units   Label    Explanations
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   1-10   A10    ---     HD        Henry Draper Catalog number, if any
  11-25   A15    ---     Name1    *Alternate names for the star
  26-39   A14    ---     Name2    *Alternate names for the star
  40-47   F8.3   mag     CN1       []? Index value
  48-55   F8.3   mag     CN2       []? Index value
  56-63   F8.3   0.1nm   Ca4227    []? Index value
  64-71   F8.3   0.1nm   G4300     []? Index value
  72-79   F8.3   0.1nm   Fe4383    []? Index value
  80-87   F8.3   0.1nm   Ca4455    []? Index value
  88-95   F8.3   0.1nm   Fe4531    []? Index value
  96-103  F8.3   0.1nm   Fe4668    []? Index value
 104-111  F8.3   0.1nm   HB4681    []? Index value
 112-119  F8.3   0.1nm   Fe5015    []? Index value
 120-127  F8.3   mag     Mg1       []? Index value
 128-135  F8.3   mag     Mg2       []? Index value
 136-143  F8.3   0.1nm   Mgb       []? Index value
 144-151  F8.3   0.1nm   Fe5270    []? Index value
 152-159  F8.3   0.1nm   Fe5335    []? Index value
 160-167  F8.3   0.1nm   Fe5406    []? Index value
 168-175  F8.3   0.1nm   Fe5709    []? Index value
 176-183  F8.3   0.1nm   Fe5782    []? Index value
 184-191  F8.3   0.1nm   Na5895    []? Index value
 192-199  F8.3   mag     TiO1      []? Index value
 200-207  F8.3   mag     TiO2      []? Index value
 208-217  I10    K       Teff      []? Effective temperature
 218-224  F7.3   cm.s-2  log_g     []? Logarithm of the surface gravity
 225-232  F8.2   ---     [Fe/H]    []? Metallicity
 233-236  I4     ---     Nobs     *Number of observations
 237-240  A4     ---     r_Teff   *Source for effective temperature
 241-244  A4     ---     r_log_g  *Source for gravity
 245-248  A4     ---     r_[Fe/H] *Source for [Fe/H]
 249-251  3X     ---     ---       Blank
 252-319  A68    ---     Comment   Spectral type and comment, if any.
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Notes for file: tablea1.dat
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Name1, Name2:
  These could be "HR" numbers (Bright Star Catalog; Hoffleit 1982),
  "BD" (Bonner Durchmusterung) numbers, "Gl" numbers (Nearby Stars;
  Gleise 1969), cluster names (see the Appendix of the printed paper),
  or common names.  This is not a complete cross-reference list.

Nobs:
  This number is the upper limit to the actual number of measurements
  which went into the index averages, as some portions of some spectra 
  were missing or otherwise unusable.

r_Teff, r_log_g, r_[Fe/H]:
  See the author-supplied documentation, file tablea1.doc, for a
  complete list of references.
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(End)                                             Lee Brotzman [ADS] 16-Oct-94