J/AJ/140/1043 Globular clusters in M31 and the Galaxy (van den Bergh+, 2010)
A comparison between the half-light radii, luminosities, and UBV colors of
globular clusters in M31 and the Galaxy.
van den Bergh S.
<Astron. J., 140, 1043-1050 (2010)>
=2010AJ....140.1043V 2010AJ....140.1043V
ADC_Keywords: Clusters, globular ; Galaxies, nearby ; Milky Way ; Photometry
Keywords: galaxies: star clusters: general -
globular clusters: individual (M31, Milky Way Galaxy)
Abstract:
The Milky Way system and the Andromeda galaxy experienced radically
different evolutionary histories. Nevertheless, it is found that these
two galaxies ended up with globular cluster systems in which
individual clusters have indistinguishable distributions of half-light
radii. Furthermore, globulars in both M31 and the Galaxy are found to
have radii that are independent of their luminosities. In this
respect, globular clusters differ drastically from early-type galaxies
in which half-light radius and luminosity are tightly correlated.
Metal-rich globular clusters in M31 occupy a slightly larger volume
than do those in the Galaxy. The specific globular cluster frequency
in the Andromeda galaxy is found to be significantly higher than it is
in the Milky Way system. The present discussion is based on the 107
Galactic globular clusters, and 200 putative globulars in M31, for
which UBV photometry was available.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 65 200 Data on old clusters in M31
table2.dat 36 107 Data on Galactic globular clusters
--------------------------------------------------------------------------------
See also:
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/A+A/416/917 : M31 globular clusters Revised Bologna Catalog (Galleti+ 2004)
J/A+A/449/143 : Photometry of M31 globular cluster candidates (Ma+, 2006)
J/A+A/471/127 : New globular clusters in M31 (Galleti+, 2007)
J/A+A/508/1285 : M31 globular clusters metallicity estimates (Galleti+, 2009)
J/ApJS/173/643 : GALEX UV photometry of M31 Globular Clusters (Rey+, 2007)
J/MNRAS/392/L55 : Globular clusters in M31 from K-band phot. (Peacock+, 2009)
VII/103 : Galactic Globular Clusters (Monella 1985)
VII/151 : Galactic Globular Clusters Structure Parameters (Webbink 1985)
J/A+A/391/945 : HST photometry of 74 galactic globular clusters (Piotto+, 2002)
J/A+A/450/105 : Properties of 153 Galactic globular clusters (Bica+, 2006)
J/A+A/540/A27 : Spectroscopy in Galactic globular clusters (Saviane+, 2012)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- ID M31 cluster identification (1)
12- 16 F5.2 mag Vmag V band magnitude
17 A1 --- u_Vmag [:] Uncertainty flag on Vmag
19- 22 F4.2 mag B-V (B-V) color index
23 A1 --- u_B-V [:] Uncertainty flag on B-V
25- 29 F5.2 mag U-B (U-B) color index
30 A1 --- u_U-B [:] Uncertainty flag on U-B
32- 36 F5.2 mag Q Q parameter [U-B-0.72(B-V)]
37 A1 --- u_Q [:] Uncertainty flag on Q
39- 43 F5.2 mag E(B-V) Redenning
44 A1 --- u_E(B-V) [:] Uncertainty flag on E(B-V)
46- 50 F5.2 mag V0mag Absorption corrected V band magnitude
51 A1 --- u_V0mag [:] Uncertainty flag on V0mag
53- 58 F6.2 mag VMAG Absolute V band magnitude
59 A1 --- u_VMAG [:] Uncertainty flag on VMAG
61- 65 F5.2 pc Rh Half-light radius
--------------------------------------------------------------------------------
Note (1): Nomenclature note:
BNNN = Bol NNN, Battistini et al., 1987A&AS...67..447B 1987A&AS...67..447B
BNNND = Bol DNNN, Battistini et al., 1987A&AS...67..447B 1987A&AS...67..447B
BANN = BA 3-NNN, Baade
DAONNN = [CCS85] NNN, Crampton et al., 1985ApJ...288..494C 1985ApJ...288..494C
GNNN = SKHB NNN, Sargent et al., 1977AJ.....82..947S 1977AJ.....82..947S
H16 = [H32] 16, Hubble, 1932ApJ....76...44H 1932ApJ....76...44H
MNNN = [MKK98] M 31 NNN, Mochejska et al., 1998AcA....48..455M 1998AcA....48..455M
VNNN = [V62] NNN, Vetesnik, 1962BAICz..13..180V 1962BAICz..13..180V
SKNNNA objects are not in Simbad.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- ID Galactic cluster identification
8- 12 F5.2 [Sun] [Fe/H] Metallicity
14- 18 F5.2 --- Q The Q parameter, U-B-0.72(B-V)
20- 25 F6.2 mag VMAG Absolute V band magnitude
27- 31 F5.2 pc Rh Half-light radius
33- 36 F4.1 pc Rgc Galactocentric distance
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 16-Jun-2012