J/MNRAS/409/1281 Old star clusters in the FSR catalogue (Froebrich+, 2010)
Old star clusters in the FSR catalogue.
Froebrich D., Schmeja S., Samuel D., Lucas P.W.
<Mon. Not. R. Astron. Soc., 409, 1281-1288 (2010)>
=2010MNRAS.409.1281F 2010MNRAS.409.1281F
ADC_Keywords: Clusters, open ; Associations, stellar ; Clusters, globular
Keywords: globular clusters: general - open clusters and associations: general
Abstract:
We investigate the old star clusters in the sample of cluster
candidates from the Froebrich, Scholz & Raftery (FSR, 2007, Cat.
J/MNRAS/374/399) list. Based on photometry from the Two-Micron All-Sky
Survey, we generated decontaminated colour-magnitude and
colour-colour diagrams to select a sample of 269 old stellar
clusters. This sample contains 63 known globular clusters, 174 known
open clusters and 32 so far unclassified objects. Isochrone fitting
has been used to homogeneously calculate the age, distance and
reddening to all clusters.
Description:
The sample of clusters analysed in this work is based on the FSR
catalogue. They determined a star density map based on 2MASS data
(Skrutskie et al. 2006, Cat. VII/233) along the entire Galactic plane
with |b|<20°. Star cluster candidates were selected as local star
density enhancements and a total of 1788 objects were found. These
candidates were cross-referenced with the SIMBAD data base.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
appena.dat 152 269 Summary table of the properties of the old
stellar clusters analysed in this paper
appenb.dat 80 380 Individual notes
notes.dat 80 35 Literature data references
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See also:
VII/195 : Globular Clusters in the Milky Way (Harris, 1996)
V/132 : SAI Open Clusters Catalog (Glushkova+, 2009)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
J/A+A/404/223 : 2MASS IR star clusters in the Galaxy (Bica+, 2003)
J/MNRAS/374/399 : Infrared star clusters with |b|<20° (Froebrich+, 2007)
Byte-by-byte Description of file: appena.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- FSR FSR number (Froebrich et al. 2007,
J/MNRAS/374/399) <[FSR2007] NNNN> in Simbad
6- 7 I2 --- r_FSR ? References and remarks for literature
parameters, in notes.dat file
8 A1 --- n_FSR [*] * indicate a note in appenb.dat file
10- 16 F7.3 deg GLON Galactic longitude
18- 25 F8.4 deg GLAT Galactic latitude
27- 32 F6.1 --- BIC Bayesian information criterion
(Schwarz, 1978, Ann. Stat. 6, 461)
34- 36 F3.1 pc Rc Cluster core radius (this paper)
38- 42 F5.2 kpc Dist Distance from the Sun (this paper) (1)
44- 48 F5.2 [yr] Age log(Age) (this paper) (1)
50- 53 F4.2 mag AK K-band extinction (this paper) (1)
55- 59 F5.2 [Sun] [M/H] Metallicity (this paper) (1)
61- 64 F4.2 --- CHK Conversion factor for extinction,
AH=CHK*AK (this paper) (1)
66- 70 F5.2 kpc DistL ?=- Distance (from WEDBA and literature)
71- 75 F5.2 [yr] AgeL ?=- log(Age) (from WEDBA and literature)
77- 80 F4.2 mag E(B-V)L ?=- Reddenning (from WEDBA and literature)
82- 86 F5.2 [Sun] [M/H]L ?=- Metallicity (from WEDBA and literature)
88- 90 I3 arcsec r ?=- Separation (from Simbad)
92- 98 A7 --- Class Classification (from Simbad): GlC=globular,
OpC=open (galactic), Cl*=cluster of stars
101-152 A52 --- ONames Other names
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Note (1): The cluster properties as used in the isochrone fit in this work,
The parameters for the isochrone fit used in this paper include the
distance to the cluster, its age, the K-band extinction, the
metallicity and the reddening law.
To plot the literature isochrone for the known globular clusters we
use an age of 12 Gyrs.
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Byte-by-byte Description of file: appenb.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- FSR FSR number
6- 80 A75 --- Note Text of the note (1)
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Note (1): We discuss details to some clusters. These are either the objects
with parameters determined here for the first time, or clusters with
literature values that do not fit the 2MASS data. If the clusters is
known already, then its other common names are given.
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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- 2 I2 --- Seq Note number
4- 80 A77 --- Note Text of the note
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 07-May-2011