Detection of CO emission from S0 galaxies

Details Detection of CO emission from S0 galaxies Detection of CO emission from S0 galaxies

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...344..204s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 344, Sept. 1, 1989, p. 204-209.

Astronomy and Astrophysics

Astronomy

74

Carbon Monoxide, Emission Spectra, Spiral Galaxies, Infrared Astronomy Satellite, Star Formation, Stellar Mass

Scientific paper

An IRAS-selected sample of 11 optically bright S0 galaxies was searched for (C-12)O J = 1-0 (115-GHz) emission. Five were detected at levels of 5Sigma or greater in integrated line intensity. These detections contradict the traditional view that S0 galaxies are devoid of molecular gas. This gas likely serves as fuel for the current star formation inferred from recent FIR and radio-continuum studies. The molecular gas could be residual, left over from galaxy formation but enriched by stellar processing, or it could originate from stellar mass loss and subsequent cooling, cooling flows, and/or capture from a gas-rich companion.

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