J/MNRAS/415/32 COLD GASS survey (Saintonge+, 2011)
COLD GASS, an IRAM legacy survey of molecular gas in massive galaxies. I. Relations between H2, H I, stellar content and structural properties. Saintonge A., Kauffmann G., Kramer C., Tacconi L.J., Buchbender C., Catinella B., Fabello S., Gracia-Carpio J., Wang J., Cortese L., Fu J., Genzel R., Giovanelli R., Guo Q., Haynes M.P., Heckman T.M., Krumholz M.R., Lemonias J., Li C., Moran S., Rodriguez-Fernandez N., Schiminovich D., Schuster K., Sievers A. <Mon. Not. R. Astron. Soc., 415, 32-60 (2011)> =2011MNRAS.415...32S
ADC_Keywords: Surveys ; Galaxies, nearby ; Morphology ; Radio lines Keywords: surveys - galaxies: evolution - galaxies: fundamental parameters - galaxies: ISM - radio lines: galaxies Abstract: We are conducting COLD GASS, a legacy survey for molecular gas in nearby galaxies. Using the IRAM 30-m telescope, we measure the CO(1-0) line in a sample of ∼350 nearby (DI~=100-200Mpc), massive galaxies (log(M*/M☉)>10.0). The sample is selected purely according to stellar mass, and therefore provides an unbiased view of molecular gas in these systems. By combining the IRAM data with Sloan Digital Sky Survey (SDSS) photometry and spectroscopy, GALEX imaging and high-quality Arecibo HI data, we investigate the partition of condensed baryons between stars, atomic gas and molecular gas in 0.1-10L* galaxies. In this paper, we present CO luminosities and molecular hydrogen masses for the first 222 galaxies. Description: To overcome this issue, the GALEX Arecibo SDSS Survey (GASS; Catinella et al. 2010, Cat. J/MNRAS/403/683) was designed to measure the neutral hydrogen content for a large, unbiased sample of ∼1000 massive galaxies (M*>1010M☉), via longer pointed observations. GASS is a large programme currently under way at the Arecibo 305-m telescope, and is producing some of the first unbiased atomic gas scaling relations in the nearby Universe (Catinella et al. 2010, Cat. J/MNRAS/403/683; Schiminovich et al., 2010MNRAS.408..919S; Fabello et al., 2011MNRAS.411..993F). We are in the process of constructing a CO Legacy Data base for the GASS survey (COLD GASS), measuring the molecular gas content of a significant subsample of the GASS galaxies. We will then be able to quantify the link between atomic gas, molecular gas and stars in these systems. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 143 308 *COLD GASS Second Data Release - 2 February 2012
Note on catalog.dat: This is an updated version of the first COLD GASS catalog, to include a total of 308 galaxies. The values in this catalog supersede those in any previous versions.
See also: J/MNRAS/403/683 : GALEX Arecibo SDSS survey (GASS) (Catinella+, 2010) Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 5 I5 --- GASS [1977/57017] GASS Identification number 9- 27 A19 --- SDSS SDSS designation (JHHMMSS.ss+DDMMSS.s) 30- 36 F7.5 --- z SDSS redshift 39- 43 F5.2 [Msun] logM* Stellar mass 47- 50 F4.2 [Msun/kpc2] logmu* ?=- Stellar mass surface density 53- 56 F4.1 arcsec D25 ?=- g-band optical diameter 59- 62 F4.2 --- C ?=- Concentration index (C=R90/R50) 65- 68 F4.2 mag NUV-r ?=- NUV-r color index, corrected for Galactic extinction 71- 75 F5.2 mag rmag ?=- r-band model magnitude 78- 82 F5.3 mK sigma rms per 20km/s-wide channel in the IRAM spectrum 86- 89 F4.1 --- S/N S/N of the CO(1-0) line (1) 92- 96 F5.2 Jy.km/s SCO CO(1-0) line flux, observed 99-103 F5.2 Jy.km/s SCOc CO(1-0) line flux, corrected 106-109 F4.2 ---- foff ?=0 Flux ratio between offset and central pointings 113-116 F4.2 [Msun] logMH2 Total H2 gas mass, measured value, or upper limit if flag CO=2 (2) 119-123 F5.2 [-] logMH2/M* H2 to stellar mass ratio, or upper limit if FlagCO=2 126 I1 --- CO [1/2] CO emission line flag, 1: detection, 2: non-detection 129-133 F5.2 [Msun] logMHI Total neutral H mass (measured value, or upper limit if HI=4) 136 I1 --- HI [0/4] HI emission line flag (3) 139-143 F5.3 --- Weight Weights (4)
Note (1): use with caution the MH2 values when S/N<5 Note (2): computed with alphaCO=3.2M☉/(K.(km/s).pc2), which does NOT include the contribution of He. Note (3): Flags as follows: 0 = no public data 1 = detection,, values of MHI from ALFALFA (Giovanelli et al. 2007, Cat. J/AJ/133/2569; Saintonge et al. 2008, Cat. J/AJ/135/588; Kent et al. 2008, Cat. J/AJ/136/713; Martin et al. 2009, Cat. J/ApJS/183/214; Stierwalt et al. 2009, Cat. J/AJ/138/338; Haynes et al. 2011AJ....142..170H) 2 = detection, values of MHI from Cornell HI archive (Springob et al., 2005, Cat. VIII/77) 3 = detection, values of MHI from GASS DR1 (Catinella et al., 2010, Cat. J/MNRAS/403/683) 4 = non-detection, values of MHI from GASS DR1 (Catinella et al., 2010, Cat. J/MNRAS/403/683) The ALFALFA & HI archive HI masses have been recomputed in the same system as the GASS HI masses. Note (4): Weights that should be used when measuring sample-wide averages or fitting relations to the sample, to correct for the flat stellar mass distribution of the COLD GASS sample compared to the complete volume-limited parent sample (see paper for a more complete description).
History: Copied at http://www.mpa-garching.mpg.de/COLD_GASS/
(End) Patricia Vannier [CDS] 10-Feb-2012
|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|