J/ApJ/611/270 Magellanic star clusters IR fluctuations (Gonzalez+, 2004)
Infrared surface brightness fluctuations of Magellanic star clusters.
Gonzalez R.A., Liu M.C., Bruzual A.G.
<Astrophys. J., 611, 270-293 (2004)>
=2004ApJ...611..270G 2004ApJ...611..270G
ADC_Keywords: Associations, stellar ; Magellanic Clouds ; Stars, giant
Keywords: astronomical data bases: miscellaneous -
galaxies: distances and redshifts - galaxies: star clusters -
Magellanic Clouds - stars: AGB and post-AGB
Abstract:
We present surface brightness fluctuations (SBFs) in the near-IR for
191 Magellanic star clusters available in the Second Incremental and
All Sky Data releases of the Two Micron All Sky Survey (2MASS, Cat.
II/246) and compare them with SBFs of Fornax Cluster galaxies and
with predictions from stellar population models as well.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 72 191 Cluster data
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- SCl Supercluster type (co-added clusters of
same SWB class)
10- 15 E6.2 yr Age Cohen (1982ApJ...258..143C 1982ApJ...258..143C) supercluster
age (1)
17- 22 F6.4 --- Z Cohen (1982ApJ...258..143C 1982ApJ...258..143C) supercluster
metallicity
24- 27 A4 arcsec --- [0-60-] Limiting radii of analyzed region (2)
29- 46 A18 --- Name Star cluster name
48- 49 A2 --- Orig Origin of the data Name (3)
51- 52 I2 --- Num Number of 2MASS PSC stars in analysis
54- 55 I2 --- sPar Elson & Fall (1985ApJ...299..211E 1985ApJ...299..211E;
1988AJ.....96.1383E 1988AJ.....96.1383E) s-parameter
(related to the age)
57- 59 A3 --- Cloud Cloud name star cluster belongs to
61- 64 F4.2 mag E(B-V) ? Persson et al. (1983ApJ...266..105P 1983ApJ...266..105P)
E(B-V) (4)
66- 71 A6 --- SWB Cluster SWB class (5)
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Note (1): For the Pre-SWB supercluster only, we have adopted the age of a
cluster with s=7 from Elson & Fall (1985ApJ...299..211E 1985ApJ...299..211E).
Note (2): In arcseconds at the distance of the LMC.
Note (3): Origin of the data, defined as follows:
a = Data from All Sky Data Release of 2MASS (Cat. II/246);
b = Clusters added to sample from Elson & Fall (1988AJ.....96.1383E 1988AJ.....96.1383E);
c = Listed as IC 1665 in both van den Bergh (1981A&AS...46...79V 1981A&AS...46...79V) and
Elson & Fall (1985ApJ...299..211E 1985ApJ...299..211E).
Note (4): Otherwise, we have assumed E(B-V)=0.075, and E(B-V)=0.037
for the SMC (Schlegel, Finkbeiner, & Davis 1998ApJ...500..525S 1998ApJ...500..525S).
Note (5): SWB classification from Searle, Wilkinson and Bagnuolo
(1980ApJ...239..803S 1980ApJ...239..803S), which constitutes a smooth, one-dimensional
sequence of increasing age and decreasing metallicity from from
pre-SWB (very young) to SWB-VII
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 13-Oct-2005