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 1974RMxAA...1..211C
ADC_Keywords: Stars, O ; MK spectral classification ; Space velocities
Description:
The catalog is a compilation of published data for 644 galactic O
stars of luminosity class 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, HII region identifications, remarks, and notes.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 144 664 Catalog Data
notes.dat 72 173 Notes
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See also:
II/76 : O star catalogue, 4th edition (Goy 1980)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- CGO [1/664]+ CGO number (sequential ID)
5-15 A11 --- Ident Alternate identification
17-18 I2 h RAh Right Ascension 1975.0 (hours)
20-23 F4.1 min RAm Right Ascension 1975.0 (minutes)
25 A1 --- DE- Sign of Declination 1975.0
26-27 I2 deg DEd Declination 1975.0 (degrees)
29-30 I2 arcmin DEm Declination 1975.0 (arcminutes)
32-34 I3 deg GLONd Galactic longitude degrees
36-37 I2 arcmin GLONm Galactic longitude arcminutes
39 A1 --- GLAT- [±] Galactic latitude sign
40-41 I2 deg GLATd Galactic latitude degrees
43-44 I2 arcmin GLATm Galactic latitude arcminutes
46-50 F5.2 mag Mag [1/16]? V magnitude or other band (see n_Mag)
51 A1 --- n_Mag [PVMC?] Note on V magnitude (1)
52-57 F6.2 mag B-V ? B-V magnitude
59-73 A15 --- Sp MK spectral type
74 A1 --- q_Sp [HMLN] Spectral type quality index (2)
76-80 F5.2 kpc Dist [0.15/15]? Star distance (3)
81 A1 --- q_Dist [A-L] Distance quality index (3)
83-87 I5 pc zDist [-2143/1530]? Distance to galactic plane
89-92 I4 km/s Vr [-140/109]? Heliocentric radial velocity
93 A1 --- q_Vr [ABCDE] HRV quality index (4)
95-98 I4 km/s VLSR ? Radial Velocity in LSR, VLSR (5)
100-102 I3 km/s Vcr ? Radial Velocity relative to circular (5)
104-107 I4 km/s Vpr ? Radial component of Peculiar velocity (5)
109 A1 --- HII [IO] HII region flag (6)
111-116 A6 --- Reg HII region identification (6)
117 A1 --- n_Reg [XYZ] Star-HII region distance indicator (6)
119-121 I3 --- Goy [1/633]? Goy (II/76) number
123 A1 --- Note [*] Note flag, see file notes.dat
125-144 A20 --- Rem Remarks (7)
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Note (1):
Single-character code related to 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
(Δm<2) and its proximity (d<10'')".
C = a correction has been applied to allow for a companion. In these cases
Δm is given in the remarks following "SB" or "VB", as 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 (2):
The spectral type quality index is a single-character code, defined by
Cruz-Gonzalez et al. (1974RMxAA...1..211C 1974RMxAA...1..211C):
H = High quality.
This is assigned only to spectral types from the following sources:
* Conti, P. S. 1973a, Astrophys. J., 179, 161 (1973ApJ...179..161C 1973ApJ...179..161C)
* Conti, P. S. 1973b, Astrophys. J., 179, 181 (1973ApJ...179..181C 1973ApJ...179..181C)
* Conti, P. S. 1974, Astrophys. J., 187, 539 (1974ApJ...187..539C 1974ApJ...187..539C)
* Conti, P. S. and Alschuler, W. R. 1971, Astrophys. J., 170, 325.
(1971ApJ...170..325C 1971ApJ...170..325C)
* Humphreys, R. M. 1970, Astron. J., 75, 602 (1970AJ.....75..602H 1970AJ.....75..602H)
* Humphreys, R. M. 1973, Astron. Astrophys. Suppl. Ser., 9, 85.
(1973A&AS....9...85H 1973A&AS....9...85H)
* Walborn, N. R. 1971, Astrophys. J. Suppl. Ser., 23, 257
(1971ApJS...23..257W 1971ApJS...23..257W)
* Walborn, N. R. 1972, Astron. J., 77, 312 (1972AJ.....77..312W 1972AJ.....77..312W)
* Walborn, N. R. 1973a, Astron. J., 78, 1067 (1973AJ.....78.1067W 1973AJ.....78.1067W)
* Walborn, N. R. 1973b, Astrophys. J., 179, 517 (1973ApJ...179..517W 1973ApJ...179..517W)
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 (3): for stars in clusters the distance 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 1mag/kpc.
The quality is a single-character code, which 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=1mag/kpc)
I L P (Av=1mag/kpc)
J M P (Av=1mag/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 (4):
see Cruz-Gonzalez et al. (1974RMxAA...1..211C 1974RMxAA...1..211C) for a discussion of how
the radial velocity and its value are determined. The single-character
code indicating means:
A: max.error = 4km/s
B: max.error = 6km/s
C: max.error = 9km/s
D: max.error = 20km/s
For spectroscopic binaries with known orbital elements, the quality index
assigned is the same as that of Batten (1967PDAO...13..119B 1967PDAO...13..119B). "In the very
few cases where the quality according to Batten was 'E', it was changed to
'D' unless the orbit was a provisional one".
Note (5): the velocities are:
VLSR = radial velocity of the star with respect to the local standard
of rest, assuming the solar motion obtained by Woolley, Epps,
Penston, and Pocock (1970ROAn....5....1W 1970ROAn....5....1W):
(U,V,W)☉=(10,10,7)km/s, where
U is directed toward the galactic center, V toward the direction
of galactic rotation and W toward the northern galactic pole).
Vrc = radial component of the velocity of an object with respect to
the LSR, at the position as the star, moving in the circular
orbit defined by the galactic potential".
Vpr = radial component of the peculiar velocity of the star
(=VLSR-Vcr)
Note (6): relation of the star with a HII region in the vicinity of the star:
* the "HII" flag is "I" if the star is inside the HII region,
"O" if it is outside;
* "Reg" id the identification of the HII region in the vicinity of the star:
a number represents a region in Marsalkova (1974Ap&SS..27....3M 1974Ap&SS..27....3M);
"CYG" identifies stars found inside the Cygnus Nebula (S109 in
Sharpless' catalog 1959ApJS....4..257S 1959ApJS....4..257S); and the designation in
Downes' list (1971AJ.....76..305D 1971AJ.....76..305D) is given in the notes for
supernova remnants projected near the O star or HII region.
* "n_Reg" is a single-character code giving an approximate distance φ
between the star and its associated HII region. The codes are:
X: φ<0".5;
Y: 0".5<φ<1°;
Z: φ>1°.
Note (7): 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.
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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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.
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Remarks and Modifications:
* 22-Jun-1995, by C.-H. Joseph Lyu [Hughes STX/NASA]:
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.
* 07-Mar-2016: Cosmetic modifications at CDS; columns renamed according
to recent standards. The following errors were noted, but not corrected:
-- CGO 200: RA in error by 20min, should be 9 22.4 instead of 9 2.4
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Reference:
Batten, A. H. 1967, Publ. Dom. Astrophys. Obs., 13, 119.
Cruz-Gonzalez, 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