J/MNRAS/394/1857 H2/HI ratio in galaxies (Obreschkow+, 2009)
Understanding the H2/HI ratio in galaxies.
Obreschkow D., Rawlings S.
<Mon. Not. R. Astron. Soc., 394, 1857-1874 (2009)>
=2009MNRAS.394.1857O 2009MNRAS.394.1857O
ADC_Keywords: Galaxies, radio ; H I data ; Radio lines
Keywords: ISM: atoms - ISM: clouds - ISM: molecules - radio lines: galaxies
Abstract:
We revisit the mass ratio ηgalaxy between molecular hydrogen
(H2) and atomic hydrogen (HI) in different galaxies from a
phenomenological and theoretical viewpoint.
Description:
The sample of galaxies used in this section is presented in tableA1
and consists of 245 distinct objects with simultaneous measurements
of integrated HI line fluxes and CO(1-0) line fluxes. The latter were
drawn from nine catalogues in the literature, and, where not given
explicitly, recomputed from indicated H2 masses by factoring out the
different X-factors used by the authors.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 48 245 Homogenized galaxy sample based on data drawn
from the literature
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See also:
J/A+A/411/381 : CO observation of isolated galaxies (Sauty+, 2003)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 ---- Name Galaxy name
13- 16 F4.1 --- TType Numerical Hubble type
18- 22 F5.1 Mpc Dl Luminosity distance (in Mpc/h)
24- 29 F6.2 -- MB-5logh Absolute magnitude (1)
31- 35 F5.2 --- X X-factor derived from MB (Eq. 8) without
addition of Gaussian scatter (2)
37- 40 F4.2 [solMass] log(MH2/X) H2 mass (in h-2M☉ units)
42 I1 --- r_log(MH2/X) H2 reference (3)
44- 48 F5.2 [solMass] log(MHI) HI mass (in h-2M☉ units)
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Note (1): Where MB is the extinction-corrected absolute blue magnitude
Note (2): Eq. (8): log(X)=3.36+0.160(MB-5logh)±σX
Note (3): Reference as follows:
1 = Welch & Sage (2003ApJ...584..260W 2003ApJ...584..260W),
Sage & Welch (2006ApJ...644..850S 2006ApJ...644..850S)
2 = Matthews et al. (2005AJ....129.1849M 2005AJ....129.1849M)
3 = Sauty et al. (2003, Cat. J/A+A/411/381)
4 = Georgakakis et al. (2001MNRAS.326.1431G 2001MNRAS.326.1431G)
5 = Andreani et al. (1995A&A...300...43A 1995A&A...300...43A)
6 = Sage (1993A&A...272..123S 1993A&A...272..123S)
7 = Lees et al. (1991ApJ...379..177L 1991ApJ...379..177L)
8 = Thronson et al. (1989ApJ...344..747T 1989ApJ...344..747T)
9 = Young & Knezek (1989ApJ...347L..55Y 1989ApJ...347L..55Y)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 01-Sep-2009