The variation of the gas content of galaxy groups and pairs compared to isolated galaxies
Sambit Roychowdhury,
Martin J. Meyer,
Jonghwan Rhee
et al.
Abstract:We measure how the atomic gas (HI) fraction (f HI = MHI M * ) of groups and pairs taken as single units vary with average stellar mass ( M * ) and average star-formation rate ( SFR ), compared to isolated galaxies. The HI 21 cm emission observation are from (i) archival ALFALFA survey data covering three fields from the GAMA survey (provides environmental and galaxy properties), and (ii) DINGO pilot survey data of one of those fields. The mean f HI for different units (groups/pairs/isolated galaxies) are measu… Show more
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