J/AcA/48/455 Globular Clusters in M31 and M33 (Mochejska+, 1998)
Identification and photometry of globular clusters in M31 and M33 galaxies
Mochejska B.J., Kaluzny J., Krockenberger M., Sasselov D.D., Stanek K.Z.
<Acta Astron., 48, 455 (1998)>
=1998AcA....48..455M 1998AcA....48..455M
ADC_Keywords: Clusters, globular ; Photometry, CCD
Keywords: galaxies: individual: M31, M33 - catalogs
Abstract:
We have used the data from the DIRECT project to search for new
globular cluster candidates in the M31 and M33 galaxies. We have found
67 new objects in M31 and 35 in M33 and confirmed 38 and 16 previously
discovered ones. A VI and BVI photometry has been obtained for all
clusters in M31 and M33, respectively. Luminosity functions have been
constructed for the clusters in each galaxy and compared with that of
the Milky Way.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
m31gc.dat 72 110 Globular cluster candidates in the M31 galaxy
m33gc.dat 71 55 Globular cluster candidates in the M33 galaxy
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See also:
J/AJ/115/1894 : M31A eclipsing binaries and Cepheids (Stanek+ 1998)
J/AJ/115/1016 : M31B eclipsing binaries and Cepheids (Kaluzny+ 1998)
J/AJ/117/2810 : M31C eclipsing binaries and Cepheids (Stanek+, 1999)
J/AJ/118/346 : M31D eclipsing binaries and Cepheids (Kaluzny+ 1999)
J/AJ/118/2211 : M31F eclipsing binaries and Cepheids (Mochejska+ 1999)
J/AJ/121/861 : BVI photometry of central part of M33 (Macri+, 2001)
J/AJ/121/870 : Variables in the central part of M33 BVI phot. (Macri+, 2001)
Byte-by-byte Description of file: m31gc.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number
4 A1 --- n_Seq [b] When second set of data for the object
5- 6 I2 h RAh Right ascension (J2000)
8- 9 I2 min RAm Right ascension (J2000)
11- 15 F5.2 s RAs Right ascension (J2000)
17 A1 --- DE- Declination sign (J2000)
18- 19 I2 deg DEd Declination (J2000)
21- 22 I2 arcmin DEm Declination (J2000)
24- 27 F4.1 arcsec DEs Declination (J2000)
29- 33 F5.2 mag Vmag V magnitude
34 A1 --- u_Vmag Uncertainty flag on Vmag
36- 40 F5.2 mag Imag ? I magnitude
41 A1 --- u_Imag Uncertainty flag on Imag
43- 47 F5.2 mag V-I ? V-I colour index
48 A1 --- u_V-I Uncertainty flag on V-I
50 A1 --- Class [A-D] Object class on a scale from A to D (G1)
52 A1 --- Field [A-D] Field in which the object is located
54- 57 A4 --- SKHB Sargert et al. (1977AJ.....82..947S 1977AJ.....82..947S)
designation GNNN (SKHB NNN in Simbad)
59- 63 A5 --- Bol Battistini et al. (1987A&AS...67..447B 1987A&AS...67..447B)
designation BoNNN (Bol NNN in Simbad)
65- 68 A4 --- Vet Vetesnik (1962BAICz..13..180V 1962BAICz..13..180V)
designation VNNN ([V62] NNN> (Nos 1-140)
or [SN45] for (Nos 200-300) in simbad)
70- 72 A3 --- [CCS85] Crampton et al. (1985ApJ...288..494C 1985ApJ...288..494C)
designation DNN ([CCS85] NNN in simbad)
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Byte-by-byte Description of file: m33gc.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq ? Sequential number
4- 5 I2 h RAh Right ascension (J2000)
7- 8 I2 min RAm Right ascension (J2000)
10- 14 F5.2 s RAs Right ascension (J2000)
16 A1 --- DE- Declination sign (J2000)
17- 18 I2 deg DEd Declination (J2000)
20- 21 I2 arcmin DEm Declination (J2000)
23- 27 F5.2 arcsec DEs Declination (J2000)
29- 33 F5.2 mag Bmag B magnitude
34 A1 --- u_Bmag Uncertainty flag on Bmag
36- 40 F5.2 mag Vmag V magnitude
41 A1 --- u_Vmag Uncertainty flag on Vmag
43- 47 F5.2 mag Imag ? I magnitude
48 A1 --- u_Imag Uncertainty flag on Imag
50- 54 F5.2 mag B-V ? B-V colour index
55 A1 --- u_B-V Uncertainty flag on B-V
57- 61 F5.2 mag V-I ? V-I colour index
62 A1 --- u_V-I Uncertainty flag on V-I
64 A1 --- Class [A-D] Object class on a scale from A to D (G1)
66 A1 --- Field [A-D] Field in which the object is located
68- 71 A4 --- [CS82] Christian & Schommer (1982ApJS...49..405C 1982ApJS...49..405C)
designation HNN or UNNN
([CS82] HNN or [CS82] UNNN in simbad)
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Global Notes:
Note (G1): Probability Classes for globular clusters:
A: very high probability globular cluster candidates, exhibiting
spherical structure and a substantially larger FWHM than for a
nearby star.
B: high probability globular cluster candidates. Objects in this
category usually exhibited small departures from spherical shape
not associated with the object itself, caused by nearby faint
stars, brightness fluctuations of the galaxy background, etc.
C: objects that might be globular clusters. Such objects were usually
faint and roughly spherical. Due to their faintness, their radial
profiles showed substantial background variations. Thus it was
hard to discern whether they were globular clusters or blended
stars.
D: Objects that are probably not globular clusters. Objects in this
category met the above criteria rather poorly, usually because of
low S/N ratio. Objects from other catalogs which were found
unlikely to be globular clusters were also put into this category.
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History: Copied at cfa-ftp.harvard.edu. in pub/kstanek/DIRECT
(End) Patricia Bauer [CDS] 01-Apr-1999