Molecular gas in Hickson Compact Groups (Martinez-Badenes+, 2012)

Details Molecular gas in Hickson Compact Groups (Martinez-Badenes+, 2012) Molecular gas in Hickson Compact Groups (Martinez-Badenes+, 2012)

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012ycat..35409096m&link_type=abstract

VizieR On-line Data Catalog: J/A+A/540/A96. Originally published in: 2012A&A...540..A96M

Computer Science

Clusters: Galaxy, Carbon Monoxide, H I Data, Infrared Sources

Scientific paper

We study the effect of the extreme environment in Hickson Compact Groups (HCGs) on the molecular gas mass, MH2, and the star formation rate (SFR) of galaxies as a function of atomic hydrogen (HI) content and evolutionary phase of the group.
We selected a redshift-limited (D<100Mpc) sample of 88 galaxies in 20 HCGs with available atomic hydrogen (HI) VLA maps, covering a wide range of HI deficiencies and evolutionary phases of the groups containing at least one spiral galaxy. We observed the CO(1-0) and CO(2-1) lines with the IRAM 30m telescope for 47 galaxies. Together with literature data, our sample contains CO(1-0) spectra for 86 galaxies. We derived the far-infrared (FIR) luminosity LFIR from IRAS data and used it as a tracer of the star formation rate (SFR). We calculated the HI mass, MHI LFIR and MH2 deficiencies, based on the values expected from LB and LK in isolated galaxies from the AMIGA sample. We limited our statistical analysis to spiral galaxies, since the large number of upper limits did not allow drawing strong conclusions about MH2 and LFIR in early-type galaxies.
(4 data files).

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