Access to Astronomical Catalogues

← Click to display the menu
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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea1.dat 48 245 Homogenized galaxy sample based on data drawn from the literature
See also: J/A+A/411/381 : CO observation of isolated galaxies (Sauty+, 2003) Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
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)
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), Sage & Welch (2006ApJ...644..850S) 2 = Matthews et al. (2005AJ....129.1849M) 3 = Sauty et al. (2003, Cat. J/A+A/411/381) 4 = Georgakakis et al. (2001MNRAS.326.1431G) 5 = Andreani et al. (1995A&A...300...43A) 6 = Sage (1993A&A...272..123S) 7 = Lees et al. (1991ApJ...379..177L) 8 = Thronson et al. (1989ApJ...344..747T) 9 = Young & Knezek (1989ApJ...347L..55Y)
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 01-Sep-2009
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact