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
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:
FileName Lrecl Records Explanations
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
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
Bytes Format Units Label Explanations
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☉
Note (2): Distances are from LEDA (Paturel et al., 2003, Cat. VII/237) except for NGC 4214 (Maiz-Alpellaniz et al. (2002AJ....123.1307M). Note (1): Absolute B magnitudes are derived from the apparent B-band magnitudes found in RC3 and our adopted distances.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
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
Note (1): Values of zero indicate that removing additional reddening only move the cluster further from the Starburst99 model tracks.
History: From electronic version of the journal
(End) Greg Schwartz [AAS], Marianne Brouty [CDS] 08-Jan-2010
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