M31CLUSTRS - M31 Globular Cluster Candidates Catalog
This database table contains a list of 288 globular cluster candidates and 132
miscellaneous objects found in a 70 arcminute square field centered on the
M 31 (Andromeda) Galaxy.
The data were taken from Tables III and V of the paper by P. Battistini et al.,
1980, A&AS, 42, 357.
This designation has been derived by adding the prefix M31 to the standard
IAU designation for objects in this catalog (Bol for globular cluster
candidates taken from Table III and BolD for miscellaneous objects taken
from Table V) and the running number N (called Rec_Number in this current
database) listed in the original tables. Thus, the first entry in Table
III of Battistini et al. (1980) is here designated M31 BOL 1, and the
last entry in Table V (op. cit.) is designated M31 BOLD 132.
The Right Ascension of the object. The rms error in this coordinate is
estimated to be 0.5 arcseconds.
The Declination of the object. The rms error in this coordinate is
estimated to be 0.3 arcseconds
The galactic longitude of the object.
The galactic latitude of the object.
The visual magnitude: the estimated accuracy is 0.3 magnitudes, except for
entries with Vmag_Flag = ':' where the accuracy is presumably poorer.
If this flag = ':', then the value of Vmag is more uncertain than
the standard 0.3 magnitudes.
This parameter represents the degree of confidence that the authors of
the catalog had that a given object was indeed a globular cluster:
A: very high confidence
B: high confidence
C: rather low confidence
D: probably not a globular cluster
All of the so-called miscellaneous objects taken from Table 5 of the
original reference are in category D.
This is a cross-identification, being the numerical designation for
the same object in the M 31 Consortium Catalog of Sargent et al. 1977,
AJ, 82, 947.
Other identifications and remarks about the objects. Objects with (**)
in their remark have a note at the end of Table III or V in the original
catalog of Battistini et al. 1980 (q.v.). The numerical reference codes are:
(1) = Vetesnik 1962, Bull. Astron. Inst. Czech., 13, 180,
(2) = Sargent et al. 1977, AJ, 82, 947 (M31C),
(3) = van den Bergh 1969, ApJS, 19, 145,
(4) = Arp 1956, AJ, 61, 15,
while the references for the other cross-identifications are as follows:
APB: Alloin et al. 1976, A&A, 50, 127.
BA1: Baade and Arp, 1964, ApJ, 139, 1027: table I (emission nebulae).
BA2: Baade and Arp, 1964, ApJ, 139, 1027: table II (extragalactic nebulae).
BA3: Baade and Arp, 1964, ApJ, 139, 1027: table III (globular clusters).
BA4: Baade and Arp, 1964, ApJ, 139, 1027: table IV
FJ : Ford and Jacoby 1978, ApJS, 38, 351.
H : Hubble 1932, ApJ, 76, 44.
J : Johnson 1961, ApJ, 133, 109.
(OB): van den Bergh 1964, ApJS, 9, 55.
PELLET: Pellet et al. 1978, A&AS, 31, 439.
S : Sandage 1971, Nuclei of Galaxies, (ed. J.K. O'Connell), p. 222.
SH : Sharov 1973, Soviet Astronomy, 17, 174.
V : Vetesnik 1962, Bull. Astron. Inst. Czech., 13, 180.
The running reference number (column 1 in the original tables) which
was used in the construction of the Name of each entry.
BROWSE classification type. All objects with confidences of A, B, or C
have been classified as globular clusters in the current database,
while objects with confidence of D are classified as unidentified.
Questions regarding the M31CLUSTRS database table can be addressed to the
HEASARC User Hotline.
If you have any problems, please consult the help
page or mail firstname.lastname@example.org