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Molecular and atomic gas in dust lane early-type galaxies - I. Low star formation efficiencies in minor merger remnants

Davis, Timothy A.; Rowlands, Kate; Allison, J.R.; Shabala, Stanislav S; Ting, Yuan; Lagos, Claudia; Kaviraj, Sugata; Bourne, N.; Dunne, Loretta; Eales, S; Ivison, Robert J


In this work we present IRAM 30-m telescope observations of a sample of bulge-dominated galaxies with large dust lanes, which have had a recent minor merger. We find these galaxies are very gas rich, with H2 masses between 4 × 108 and 2 × 1010 M⊙.We use these molecular gas masses, combined with atomic gas masses from an accompanying paper, to calculate gas-to-dust and gas-to-stellar-mass ratios. The gas-to-dust ratios of our sample objects vary widely (between ≈50 and 750), suggesting many...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stv597
Access Rights: Open Access


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