ACDS V10.0 - Detailed Description of VII/202

ACDS V10.0 - Sun Jan 19 02:31:02 CET 2025

| # Detailed Description of VII/202 : Globular Clusters in the Milky Way (Harris, 1997) |

Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.

    VII/202                 Globular Clusters in the Milky Way (Harris, 1997)
    ================================================================================
    A catalog of parameters for globular clusters on the Milky Way
         Harris W.E.
        <Astron. J. 112, 1487 (1996, rev. 15 May 1997)>
        =1996AJ....112.1487H
    ================================================================================
    ADC_Keywords: Clusters, globular

    Description:
        This catalog compiled by William E. Harris contains basic parameters
        on distances, velocities, metallicities, luminosities, colors, and
        dynamical parameters for 147 objects regarded as globular clusters in
        the Milky Way galaxy. A complete list of source references is given in
        the companion file "sources".

        The original files are also accessible through WorldWideWeb, at URL
        http://www.physics.mcmaster.ca/Globular.html

        This version corresponds to revision: May 15, 1997,
          and supersedes the previous version (Catalog VII/195).

    Important Notice:
        Please acknowledge the use of this catalog in any published work you
        derive from it. I would also greatly appreciate receiving any new
        information, in published or preprint form, which would help me keep
        the list up to date.
                            William E. Harris harris@physics.mcmaster.ca
                            McMaster University

    File Summary:

           FileName      Lrecl  Records   Explanations

    ×                   80        .   This file
    × ReadMe            80        .   This file
    × catalog          236      147   The catalogue of Globular Clusters
    × sources.txt       80     1176   Sources and Explanations

    See also:
        VII/151 : Structure Parameters of Galactic Globular Clusters (Webbink 1985)
        http://www.physics.mcmaster.ca/Globular.html : the author's database.

    Byte-by-byte Description of file:  catalog

       Bytes Format Units     Label     Explanations

       2- 10  A9    ---       ID        Cluster identification number
      12- 22  A11   ---       Name      Other commonly used cluster name
      24- 25  I2    h         RAh       Right Ascension J2000 (hours)
      27- 28  I2    min       RAm       Right Ascension J2000 (minutes)
      30- 33  F4.1  s         RAs       Right Ascension J2000 (seconds)
          36  A1    ---       DE-       Declination J2000 (sign)
      37- 38  I2    deg       DEd       Declination J2000 (degrees)
      40- 41  I2    arcmin    DEm       Declination J2000 (minutes)
      43- 44  I2    arcsec    DEs       Declination J2000 (seconds)
      47- 52  F6.2  deg       GLON      Galactic longitude
      54- 59  F6.2  deg       GLAT      Galactic latitude
      61- 65  F5.1  kpc       Rsun      ? Distance from Sun
      67- 71  F5.1  kpc       Rgc       ? Distance from Galactic center,
                                          assuming R(Sun)=8.0 kpc
      73- 77  F5.1  kpc       X         ? X-component (1)
      79- 83  F5.1  kpc       Y         ? Y-component (1)
      85- 89  F5.1  kpc       Z         ? Z-component (1)
    --------------------------------------------------------------------------------
      93- 96  F4.2  mag       E(B-V)    ? Foreground reddening
      98-102  F5.2  mag       V(HB)     ? V magnitude of the horizontal branch
                                            (or RR Lyraes)
     104-108  F5.2  mag       (m-M)V    ? Apparent visual distance modulus
     110-114  F5.2  mag       Vt        ? Integrated V magnitude of the cluster
     116-121  F6.2  mag       MVt       ? Absolute visual magnitude
                                            (cluster luminosity)
     123-127  F5.2  mag       (U-B)t    ? Integrated color index (2)
     129-133  F5.2  mag       (B-V)t    ? Integrated color index (2)
     135-139  F5.2  mag       (V-R)t    ? Integrated color index (2)
     141-145  F5.2  mag       (V-I)t    ? Integrated color index (2)
     147-151  F5.1  ---       S(RR)     ? Specific frequency of RR Lyr
                                          (see Suntzeff et al., 1991ApJ...367..528S)
     153-157  F5.2  ---       HBR       ? Horizontal-branch ratio = (B-R)/(B+V+R)
                                          (see Lee, 1990ApJ...363..159L)
     160-162  A3    ---       HBt       [0-7/: ] Dickens horizontal-branch
                                          morphological type
                                          (see Dickens, 1972MNRAS.157..281D)
    --------------------------------------------------------------------------------
     165-169  F5.2  Sun       [Fe/H]    ? Metallicity in log (base 10) scale
     171-174  A4    ---       SpT       Integrated spectral type
     176-181  F6.1  km/s      Vr        ? Heliocentric radial velocity
     183-186  F4.1  km/s      e_Vr      ? Observational uncertainty in Vr
     188-193  F6.1  km/s      Vlsr      ? Radial velocity relative to Solar
                                          local standard of rest
     195-198  F4.2  ---       c         ? Central concentration, c = log(Rt/Rc)
     199-200  A2    ---       n_c       [c: ] 'c' denotes a core-collapsed cluster
     202-205  F4.2  arcmin    Rc        ? Core radius
     207-210  F4.2  arcmin    Rh        ? Half-mass radius
         211  A1    ---       u_Rh      Uncertainty flag (:) on Rh
     213-217  F5.2  yr        log(Tc)   ? Log (base 10) of core relaxation time
     219-223  F5.2  yr        log(Th)   ? Log (base 10) of relaxation time at
                                          the half-mass radius
     226-230  F5.2 mag/arcsec2 muV      ? Central surface brightness in V band
     232-236  F5.2 solLum/pc3 log(rhoc)  ? Logarithm of central luminosity density
                                          (Solar luminosities per cubic parsec)

    Note (1): Position in Sun-centered coordinate system;
         X points toward Galactic center,
         Y in direction of Galactic rotation,
         Z toward North Galactic Pole
    Note (2): color indices are uncorrected for reddening

    History:
        The catalogue was copied via ftp from www.physics.mcmaster.ca/pub/

    Acknowledgements:
        William E. Harris  harris@physics.mcmaster.ca
    ================================================================================
    (End)                                     Francois Ochsenbein [CDS]  14-May-1997