J/AJ/135/823 ICMF of super star clusters (Dowell+, 2008)
The initial cluster mass function of super star clusters in irregular and
spiral galaxies.
Dowell J.D., Buckalew B.A., Tan J.C.
<Astron. J., 135, 823-835 (2008)>
=2008AJ....135..823D 2008AJ....135..823D
ADC_Keywords: Galaxies, nearby - Associations, stellar ; Photometry, SDSS
Keywords: galaxies: irregular - galaxies: spiral - galaxies: star clusters
Abstract:
The initial cluster mass function (ICMF) is a fundamental property of
star formation in galaxies. To gauge its universality, we measure and
compare the ICMFs in irregular and spiral galaxies. Our sample of
irregular galaxies is based on 13 nearby galaxies selected from a
volume-limited sample from the fifth data release of the Sloan Digital
Sky Survey (SDSS), from which about 320 young (≤20Myr), massive
(≳3x10^49M☉) clusters or associations were selected using an
automated source extraction routine. The extinctions, ages, and masses
were determined by comparing their u'g'i'z' magnitudes to those
generated from starburst models.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 77 16 Properties of the galaxies used in this survey
table2.dat 136 1321 Detected star clusters from the galaxies
found in the SDSS DR5 Data
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See also:
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
http://www.sdss.org/ : SDSS Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Type Type of galaxy (Irregulars or spirals)
12- 19 A8 --- Galaxy Galaxy name
21- 22 I2 h RAh Right ascension (J2000) (from NED)
24- 25 I2 min RAm Right ascension (J2000(from NED)
27- 31 F5.2 s RAs Right ascension (J2000(from NED)
33 A1 --- DE- Declination sign (J2000(from NED)
34- 35 I2 deg DEd Declination (J2000) (from NED)
37- 38 I2 arcmin DEm Declination (J2000) (from NED)
40- 43 F4.1 arcsec DEs Declination (J2000) (from NED)
45- 48 F4.1 --- HS Hubble Stage number (from RC3, Cat. VII/155)
50- 58 A9 --- MType Morphological type
60- 64 F5.1 mag BMAG Absolute B magnitude (1)
66- 68 I3 km/s RV Radial velocity (from NED)
70- 73 F4.2 Mpc Dist Distance (2)
75- 77 I3 --- Ncl Number of star clusters with M>105M☉
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Note (2): Distances are from LEDA (Paturel et al., 2003, Cat. VII/237)
except for NGC 4214 (Maiz-Alpellaniz et al. (2002AJ....123.1307M 2002AJ....123.1307M).
Note (1): Absolute B magnitudes are derived from the apparent B-band
magnitudes found in RC3 and our adopted distances.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Galaxy Galaxy name
10- 14 F5.3 mag AV-MW NED Milky way V band extinction
16- 20 F5.3 [Sun] Z Metallicity of best model fit
22- 25 I4 --- ID Star cluster identification
([DBT2008] Galaxy NNNN in Simbad)
27- 28 I2 h RAh Hour of Right Ascension (J2000)
30- 31 I2 min RAm Minute of Right Ascension (J2000)
33- 37 F5.2 s RAs Second of Right Ascension (J2000)
39 A1 --- DE- Sign of the Declination (J2000)
40- 41 I2 deg DEd Degree of Declination (J2000)
43- 44 I2 arcmin DEm Arcminute of Declination (J2000)
46- 49 F4.1 arcsec DEs Arcsecond of Declination (J2000)
51- 54 F4.2 mag AV The galactic V band extinction (1)
56- 61 F6.2 mag u'MAG Absolute intrinsic u' band magnitude
63- 66 F4.2 mag e_u'MAG Error in u'MAG
68- 73 F6.2 mag g'MAG Absolute intrinsic g' band magnitude
75- 78 F4.2 mag e_g'MAG Error in g'MAG
80- 85 F6.2 mag i'MAG Absolute intrinsic i' band magnitude
87- 90 F4.2 mag e_i'MAG Error in i'MAG
92- 97 F6.2 mag z'MAG Absolute intrinsic z' band magnitude
99-102 F4.2 mag e_z'MAG Error in z'MAG
104-108 F5.2 Myr Age Cluster age
110-115 F6.2 Myr E_Age Upper limit uncertainty for Age
117-121 F5.2 Myr e_Age Lower limit uncertainty for Age
123-126 F4.2 [solMass] logM Log of the cluster mass
128-131 F4.2 [solMass] E_logM Upper limit uncertainty for logM
133-136 F4.2 [solMass] e_logM Lower limit uncertainty for logM
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Note (1): Values of zero indicate that removing additional reddening only
move the cluster further from the Starburst99 model tracks.
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History:
From electronic version of the journal
(End) Greg Schwartz [AAS], Marianne Brouty [CDS] 08-Jan-2010