J/PAZh/35/829 Star clusters in IC 10 (Tikhonov+, 2009)
Stellar population of the irregular galaxy IC 10.
Tikhonov N.A., Galazutdinova O.A.
<Pis'ma Astron. Zh. 35, 829 (2009)>
=2009PAZh...35..829T 2009PAZh...35..829T
=2009AstL...35..748T 2009AstL...35..748T
ADC_Keywords: Galaxies, nearby ; Associations, stellar ; Morphology
Keywords: Local Group, galaxy - IC 10, galaxies - stellar population, galaxies -
star clusters
Abstract:
Based on our observations with the 6-m BTA telescope at the Special
Astrophysical Observatory, the Russian Academy of Sciences, and
archival Hubble Space Telescope images, we have performed stellar
photometry for several regions of the irregular galaxy IC 10, a member
of the Local Group. Distance moduli with a median value of m-M=24.47,
D=780±4kpc, have been obtained by the TRGB method for several
regions of IC 10. We have revealed 57 star clusters with various
masses and ages within the fields used. Comparison of the
Hertzsprung-Russell diagrams for star clusters in IC 10 with
theoretical isochrones has shown that this galaxy has an enhanced
metallicity, which probably explains the high ratio of the numbers of
carbon and nitrogen Wolf-Rayet stars (WC/WN). The size of the galaxy's
thick disk along its minor axis is 10.5' and a more extended halo is
observed outside this disk.
Description:
To study the stellar structure of this galaxy, we used both
ground-based observations with the 6-m BTA telescope and the 1-m Zeiss
telescope at the Special Astrophysical Observatory and archival data
from the Hubble Space Telescope (HST) with the WFPC2, ACS/WFC, and
STIS cameras.
Objects:
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RA (2000) DE Designation(s)
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00 20 23.2 +59 17 35 IC 10 = UGC 192
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 63 57 Star clusters in IC 10
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See also:
J/A+A/424/125 : Carbon stars in IC10 (Demers+, 2004)
J/MNRAS/362/1065 : XMM/Chandra study of IC 10 (Wang+, 2005)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- [TG2009] Sequential number
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- 31 F3.1 arcsec Size Size
33- 63 A31 --- Morph Cluster morphology
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 20-Nov-2009