The HI-H2 Transition in Gas Rich Early-Type Galaxies

Details The HI-H2 Transition in Gas Rich Early-Type Galaxies The HI-H2 Transition in Gas Rich Early-Type Galaxies

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1035..135l&link_type=abstract

THE EVOLUTION OF GALAXIES THROUGH THE NEUTRAL HYDROGEN WINDOW. AIP Conference Proceedings, Volume 1035, pp. 135-137 (2008).

Computer Science

1

Spiral Galaxies, Interstellar Medium And Nebulae In External Galaxies, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Spectroscopy And Spectrophotometry, Accretion And Accretion Disks

Scientific paper

We present preliminary results of a comparison of high resolution CO and HI maps in 11 gas rich early-type galaxies. Five of the eleven galaxies in the sample are detected in both HI and CO. The HI and CO in most of the galaxies is distributed in regular rotating disks. The H2/HI mass ratios for this sample range from 0.2-120. The galaxies not detected in HI reside in hostile environments and have probably lost their HI gas due to Intracluster Medium or galaxy/galaxy interactions. The behavior of the molecular fraction is broadly similar to that observed in field spirals. The results support the idea that the neutral gas systems in gas rich early-type galaxies fundamentally resemble that of normal spirals.

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