J/AJ/123/2490 RV and [Fe/H] of M31 globular cluster system (Perrett+, 2002)
The kinematics and metallicity of the M31 globular cluster system.
Perrett K.M., Bridges T.J., Hanes D.A., Irwin M.J., Brodie J.P., Carter D.,
Huchra J.P., Watson F.G.
<Astron. J. 123, 2490 (2002)>
=2002AJ....123.2490P 2002AJ....123.2490P
ADC_Keywords: Clusters, globular ; Radial velocities ; Abundances, [Fe/H]
Keywords: galaxies: individual (M31) - galaxies: stellar content -
Galaxy: formation - Galaxy: kinematics and dynamics -
techniques: spectroscopic
Abstract:
With the ultimate aim of distinguishing between various models
describing the formation of galaxy halos (e.g., radial or multiphase
collapse and random mergers), we have completed a spectroscopic study
of the globular cluster system of M31. We present the results of deep
intermediate-resolution fiber-optic spectroscopy of several hundred of
the M31 globular clusters using the Wide Field Fibre Optic
Spectrograph at the William Herschel Telescope in La Palma, Canary
Islands. These observations have yielded precise radial velocities
(±12km/s) and metallicities (±0.26dex) for over 200 members of the
M31 globular cluster population out to a radius of 1.5° from the
galaxy center. Many of these clusters have no previous published
radial velocity or [Fe/H] estimates, and the remainder typically
represent significant improvements over earlier determinations. We
present analyses of the spatial, kinematic, and metal abundance
properties of the M31 globular clusters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 91 281 Wide Field Fibre Optic Spectrograph (WYFFOS) Results
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See also:
J/A+AS/116/447 : M31 globulars clusters ellipticities (Staneva+, 1996)
J/AJ/114/1488 : Globulars in M31 (Holland+ 1997)
J/AJ/119/727 : M31 globular clusters photometry (Barmby+, 2000)
J/AJ/122/2458 : M31 globular clusters from HST (Barmby+, 2001)
J/AcA/48/455 : Globular Clusters in M31 and M33 (Mochejska+, 1998)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name The M31 globular cluster system name (1)
12- 13 I2 h RAh Hour of Right Ascension (B1950)
15- 16 I2 min RAm Minute of Right Ascension (B1950)
18- 22 F5.2 s RAs Second of Right Ascension (B1950)
23 A1 --- DE- Sign of Declination (B1950)
24- 25 I2 deg DEd Degree of Declination (B1950)
27- 28 I2 arcmin DEm Arcminute of Declination (B1950)
30- 33 F4.1 arcsec DEs Arcsecond of Declination (B1950)
35- 41 F7.2 arcmin Xpos Distance along the major axis of the galaxy (2)
43- 48 F6.2 arcmin Ypos Distance perpendicular to the major axis of
the galactic plane (2)
50- 53 I4 km/s RV ? The radial velocity (3)
55- 59 F5.2 [Sun] [Fe/H] ? Log of the Fe/H abundance
61- 64 F4.2 [Sun] e_[Fe/H] ? Error in [Fe/H]
66- 76 A11 --- NonGC Confirmed non-cluster object
78- 91 A14 --- AltRef Alternative High-precision RV and/or [Fe/H]
reference (4)
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Note (1): Target catalog references:
B: Battistini et al., 1980A&AS...42..357B 1980A&AS...42..357B, 1987A&AS...67..447B 1987A&AS...67..447B
S: Sargent et al., 1977AJ.....82..947S 1977AJ.....82..947S
BA: Baade & Arp, 1964ApJ...139.1027B 1964ApJ...139.1027B
BoD: Battistini et al., 1987A&AS...67..447B 1987A&AS...67..447B, Table 4
DAO: Crampton et al., 1985ApJ...288..494C 1985ApJ...288..494C
NB: Battistini et al., 1993A&A...272...77B 1993A&A...272...77B
V: Vetesnik, 1962BAICz..13..180V 1962BAICz..13..180V
Note (2): Xpos increases toward the northeast along the major axis.
Ypos has positive values toward the northwest. See section 2 for
further details.
Note (3): The uncertainty associated with RV is ±12km/s.
Note (4): [Fe/H] references:
1: Barmby et al., 2000, Cat. J/AJ/119/727
2: Huchra, Brodie, & Kent, 1991ApJ...370..495H 1991ApJ...370..495H
3: Dubath & Grillmair, 1997A&A...321..379D 1997A&A...321..379D
4: Peterson, 1989, in Dynamics of Dense Stellar Systems,
ed. D. Merritt (Cambridge: Cambridge Univ. Press), 161
5: Federici et al., 1993A&A...274...87F 1993A&A...274...87F
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 17-Jun-2002