Access to Astronomical Catalogues

III/84B     Galactic O Stars             (Cruz-Gonzalez+ 1974)
Catalogue of Galactic O Stars
    Cruz-Gonzalez C., Recillas-Cruz E., Costero R., Peimbert M., and
    Torres-Peimbert S.
   <Rev. Mex. Astron. Astrof. 1, 211 (1974)>
   =1974RMxAA...1..211C
ADC_Keywords: Stars, O


Description:
    The catalog is a compilation of published data for 644 galactic O
    stars of luminosity V. The catalog is intended to be useful to O-type
    star observers by providing a reference list for general studies on
    O-type stars. The catalog includes cross identifications, equatorial
    and galactic coordinates, visual or photographic magnitudes, B-V,
    spectral types, distances to the stars, radial velocities, H II region
    identifications, remarks, and notes.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
catalog.dat      144      664   Catalog Data
notes.dat         72      173   Notes


See also:
    II/76 : O star catalogue, 4th edition (Goy 1980)


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

   Bytes Format  Units   Label    Explanations

   1-  3  I3     ---     CGO     *[1/664]+ CGO number
   5- 15  A11    ---     Ident    Alternate identification
  17- 18  I2     h       RAh     *Right Ascension 1975.0 (hours)
  20- 23  F4.1   min     RAm     *RA in minutes
      25  A1     ---     DE-     *Sign of Declination 1975.0
  26- 27  I2     deg     DEd     *DEC degrees
  29- 30  I2     arcmin  DEm     *DEC arcminutes
  31- 34  I4     deg     GLONd   *Galactic longitude degrees
  35- 37  I3     arcmin  GLONm   *Galactic longitude arcminutes
      39  A1     ---     GLAT-    [±] Galactic latitude sign
  40- 41  I2     deg     GLATd   *Galactic latitude degrees
  42- 44  I3     arcmin  GLATm   *Galactic latitude arcminutes
  46- 50  F5.2   mag     Mag     *? V magnitude, or other mag.
      51  A1     ---     q_Mag   *[PVMC?] Mag. quality index
  52- 57  F6.2   mag     B-V      ? B-V magnitudes
  59- 73  A15    ---     Sp       Spectral type
      74  A1     ---     q_Sp    *[HMLN] Spectral type quality index
  75- 80  F6.2   kpc     Dist    *? Star Distance
      81  A1     ---     q_Dist  *[A-L] Distance quality index
  82- 87  I6     pc      zDist   *? Distance to galactic plane
  88- 92  I5     km/s    HRV     *? Heliocentric radial velocity
      93  A1     ---     q_HRV   *[ABCDE] HRV quality index
  94- 98  I5     km/s    VLSR    *? Radial Velocity in LSR
  99-102  I4     km/s    VLSRcom *? VLSR radial component
 103-107  I5     km/s    PVelrad *? Radial component of Peculiar velocity
     109  A1     ---     H2flag  *[IO] HII region flag
 111-116  A6     ---     H2Ident *HII region identification
     117  A1     pc      D-H2    *Star-HII region distance
 118-121  I4     ---     Goy     *?Goy (1973) number
     123  A1     ---     Note    *[*] Note flag, see file notes.dat
 125-144  A20    ---     rem     *Remark

Note on CGO:
  Sequential number of the object in this catalog
Note on RAh, RAm, DE-, DEd, DEm:
  Equatorial coordinate for Equinox 1975.0
Note on GLONd, GLONm, GLAT-, GLATd, GLATm:
  Galactic coordinate (l II and b II)
Note on Mag:
  V in the UBV system where available, otherwise the photographic magnitude
  (see mag. quality index)
Note on q_Mag:
  Single-character code indicating the quality of the magnitude. The following
  codes are used:
  P The magnitude is photographic rather than visual. These stars will not
    have B-V listed.
  V The star is an intrinsic variable.
  M The star is one component of a close multiple system. The magnitude
    listed may be contaminated because of "the brightness of the companion
    (delta_m < 2) and its proximity (d < 10")."
  C A correction has been applied to allow for a companion. In these cases
    delta_m is given in the remarks following "SB" or "VB":
    The value given for delta_m is the magnitude difference between the O star
    and its companion, as given in the literature. The magnitude listed in
    the CGO corresponds to the observed visual intensity from which the
    intensity of the companion has been subtracted.
  ? The magnitude is not known. The magnitude field will be blank.
Note on q_Sp:
  Spectral type quality index -- Single-character code indicating the quality
  of the spectral index. Cruz-Gonzlez et al. (1974) define the following codes
  for this field:
  H  High quality. This is assigned only to spectral types from the following
     sources:
     Conti, P. S. 1973a, Astrophys. J., 179, 161.
     Conti, P. S. 1973b, Astrophys. J., 179, 181.
     Conti, P. S. 1974, Astrophys. J., 187, 539.
     Conti, P. S. and Alschuler, W. R. 1971, Astrophys. J., 170, 325.
     Humphreys, R. M. 1970, Astron. J., 75, 602.
     Humphreys, R. M. 1973, Astron. Astrophys. Suppl. Ser., 9, 85.
     Walborn, N. R. 1971, Astrophys. J. Suppl. Ser., 23, 257.
     Walborn, N. R. 1972, Astron. J., 77, 312.
     Walborn, N. R. 1973a, Astron. J., 78, 1067.
     Walborn, N. R. 1973b, Astrophys. J., 179, 517.
  M  Medium quality. This index is assigned to spectral types determined
     by authors other than those listed above with at least two coincident
     spectra.
  L  Low quality. This index is assigned to spectral types for which there
     is either only one determination, disagreement in the literature, or
     acknowledged doubts.
  N  This index is assigned to spectral types for which there is either no
     luminosity class or widely different luminosity classes.
Note on Dist:
  Distance to the star in kiloparsecs. For stars in clusters this is just
  the distance to the cluster. For stars not in a cluster a distance was
  calculated using the photometric data and luminosity class where available,
  or the photographic magnitude and an assumed reddening of 1 mag/kpc.
Note on q_Dist:
  Single-character code indicating the quality of the distance in bytes 75-80.
  This quality depends on the spectral type quality index, the magnitude
  quality index, and the method of distance determination:
  ---------------------------------------------------
  Quality Spectral Magnitude         Distances
  Index   Index     Index           Determination
  ---------------------------------------------------
  A                                 from cluster
  B         H    blank or C         photometric
  C         H      V or M           photometric
  D         M    blank or C         photometric
  E         M      V or M           photometric
  F         L    blank or C         photometric
  G         L      V or M           photometric
  H         H         P             (Av = l mag/kpc)
  I         L         P             (Av = 1 mag/kpc)
  J         M         P             (Av = l mag/kpc)
  K         N    blank or C         (lum. class V)
  L         N      V or M           (lum. class V)
  ---------------------------------------------------
  Av = assumed normal reddening law, Av = 3E(B - V)
  Luminosity class V assumed for those stars with
  no published luminosity class.
Note on zDist:
  Perpendicular distance from the star to the galactic plane in parsecs
Note on HRV:
  Heliocentric radial velocity of the star in km/sec. See Cruz-Gonzalez et
  al. (1974) for a discussion of how this value was determined and the
  assignment of the corresponding quality index.
Note on q_HRV:
  Single-character code indicating the quality of the heliocentric radial
  velocity. The following codes are used:
  A Emax = 4 km/s
  B Emax = 6 km/s
  C Emax = 9 km/s
  D Emax = 20 km/s
  For spectroscopic binaries with known orbital elements, the quality index
  assigned is the same as that of Batten (1967). "In the very few cases where
  the quality according to Batten (1967) was 'E', which was changed to 'D'
  unless the orbit was a provisional one."
Note on VLSR:
Note on VLSR:
  Radial velocity of the star with respect to the local standard of rest (LSR),
  in km/sec.
  The heliocentric radial velocities ... of the start were reduced to the LSR
  assuming the solar motion obtained by Woolley, Epps, Penston, and
  Pocock (1970) for the local stars; namely, u = 10 km/s, v = 10 km/s, and
  w = 7 km/s (where u is directed toward the galactic center, v toward the
  direction of galactic rotation and w toward the northern galactic pole).
Note on VLSRcom:
  "Radial component of the velocity of an object with respect to the LSR,
  at the same calculated position of the star, moving in the circular orbit
  defined by the galactic potential, vcr (in km/s)."
Note on PVelrad:
Note on PVelrad:
  Radial component of the peculiar velocity of the star, vpr = vLSR - vcr,
  in km/s
Note on H2flag:
  "I" if the star is inside an H II region, "O" if it is outside
Note on H2Ident:
  Identification of the H II region containing the star or of the H II region
  in the vicinity of the star. "MA" precedes the numbers of H II regions from
  the catalog of Marsalkova; "CYG" identifies stars found inside the Cygnus
  Nebula (S109 of Sharpless (1959). The number from Downes (1971) is listed
  in the notes for supernova remnants projected near the O star or H II
  region.
Note on D-H2:
  Single-character code giving an approximate distance between a star and its
  associated H II region. The following codes are used:
  X  phi < 0".5
  Y  0".5 < phi < 1 deg
  Z  phi > 1 deg
Note on Goy:
  Number from the General Catalogue of O-Type Stars, Goy (1973)
Note on Note:
  "*" if there is a note for this object in the second file
Note on rem:
  Miscellaneous remarks about the object. The following symbols appear:
  VVAR    Velocity variable. The velocity range follows in parentheses.
  VVAR?   Suspected velocity variable; little information available to
          determine variability
  VVAR(?) Suspected velocity variable; no single measurements given,
          variability stated without range
  SB ORB  Single- or double-lined spectroscopic binary with known orbital
          elements. The magnitude difference follows in square brackets;
          the relative radial velocity is in parentheses.
  SB ORB? Spectroscopic binary with preliminary or provisional orbital
          elements. The magnitude difference follows in square brackets.
  SB      Spectroscopic binary reported to have double lines. The magnitude
          difference follows in square brackets; the relative radial
          velocity is in parentheses.
  SB?     Suspected double-line spectroscopic binary
  VB      Visual binary corrected for contribution of bright, nearby
          component. The magnitude difference follows in brackets.
  EB      Eclipsing binary. The depth of the primary eclipse in magnitudes
          follows in brackets.


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

   Bytes Format  Units   Label    Explanations

   1-  3  I3     ---     CGO      [1/664]+= CGO number, as in catalog.dat
       4  A1     ---     Cont.    [a-j] Continuation indicator
   5- 72  A68    ---     Text     Text of note.


Remarks and Modifications:
  The Catalogue of Galactic O Stars (CGO) was received by the Astronomical
  Data Center (ADC), NASA Goddard Space Flight Center, from E. Recillas-Cruz
  and J. F. Barral of the Instituto de Astronomia, Universidad Nacional
  Autonoma de Mexico, in August 1982. The original tape consisted of two text
  files containing the main catalog data in the same format as the published
  catalog: the first file contained the data from the left-hand pages; the
  second file contained the data from the right-hand pages. A FORTRAN program
  was run to combine these two files into a single one. The spectral types
  were then converted from all upper-case to standard upper- and lower-case
  notation by means of an editor. ADC personnel keyed the notes from
  Cruz-Gonzalez et al. (1974) into a separate file. A FORTRAN program was run
  to check the validity of each field according to its data type and value.

Reference:
  Batten, A. H. 1967, Publ. Dom. Astrophys. Obs., 13, 119.
  Cruz-Gonzlez, C., Recillas-Cruz, E., Costero, R., Peimbert, M., and
   Torres-Peimbert, S. 1974, Revista Mex. Astron. Astrof., 1, 21 i.
  Downes, D. 1971, Astron. J., 76, 305.
  Goy, G. 1973, Astron. Astrophys. Suppl. Ser., 12, 277.
  Sharpless, S. 1959, Astrophys. J. Suppl. Ser., 4, 257.
  Woolley, R., Epps, E. A., Penston, M. J., and Pocock, S. B. 1970, Roy. Obs.
   Ann., No. 5.
(End)                       C.-H. Joseph Lyu [Hughes STX/NASA]       22-Jun-1995