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
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