ADC/CDS Standard Document for Catalog:
/catalogs/2/2139B/

IMPORTANT NOTICE:

Superseded  General Catalog of Variable Stars, 4th Ed. (GCVS4)  (Kholopov+ 1988)
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General Catalogue of Variable Stars, 4th Edition, Volumes I-III
    Kholopov P.N., Samus' N.N., Frolov M.S., Goranskij V.P.,
    Gorynya N.A., Kireeva N.N., Kukarkina N.P., Kurochkin N.E.,
    Medvedeva G.I., Perova N.B., Shugarov S. Yu.
   <Moscow: Nauka Publishing House (1985-1988)>
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ADC_Keywords: Stars, variable

Description:
    This data set is the machine-readable version of the fourth edition of
    the General Catalogue of Variable Stars (Kholopov et al. 1985-1988).
    The machine version contains the same data as in the first three
    volumes of the printed catalog, but only the data tables without the
    textual material (introduction, bibliography, remarks) are included.
    Modifications to the format of the machine version have been made at
    the Astronomical Data Center in order to effect a completely
    homogeneous record structure suitable for full machine processing and
    sorting.

    The fourth edition of the General Catalogue of Variable Stars
    supersedes the third edition (Kukarkin et al. 1969-1970), three
    supplements (Kukarkin et al. 1971, 1974, 1976) containing data for
    5401 new variable stars and improved data for many earlier designated
    variables, and five namelists (62-66) published in the Information
    Bulletin of Variable Stars (Kukarkin et al. 1976; Kholopov et al.
    1978, 1979, 1981a, 1981b), which included only cross identifications
    for 2619 new variables. This new edition contains data for 28484
    individual objects discovered and named by 1982 and located mainly in
    the Milky Way galaxy. These data are contained in the first three
    published volumes. The fourth volume of the fourth edition, published
    in 1990, contains a table of all variables ordered by right ascension
    and declination (B1950), a table of variables listed by variability
    type, and an extensive series of cross-identification tables to
    alternate designations (see <II/172>). The fifth and final volume will
    contain data for all presently known variables in external galaxies
    (including the Magellanic Clouds), extragalactic supernovae, and
    optically variable quasistellar objects and galactic nuclei
    (see <II/205>).

    Data contained in the catalog include star identifier, equatorial
    position (B1950), annual precession, galactic coordinates, type of
    variability, maximum and minimum magnitudes, epoch of maximum, period,
    and spectral type.

    Since extensive modifications have been made to the record structure
    of the machine version, users are encouraged to carefully study the
    brief descriptions given in the document.

    The list of errors published by Durlevich et al. (1994) has been
    incorporated in this version

See also:
   Superseded by catalog 2214A:

   General Catalog of Variable Stars (Kholopov+ 1998)
   at URL ftp://adc.astro.umd.edu/pub/adc/archives/catalogs/2/2214A


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