Molecular gas, the interstellar medium, and star formation in S0 and SA galaxies

Details Molecular gas, the interstellar medium, and star formation in S0 and SA galaxies Molecular gas, the interstellar medium, and star formation in S0 and SA galaxies

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...344..747t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 344, Sept. 15, 1989, p. 747-762. Research supported by NSF.

Other

93

Interstellar Gas, Molecular Gases, Spiral Galaxies, Star Formation, Disk Galaxies, Galactic Structure, Line Spectra

Scientific paper

The results are presented of a survey for CO J = 1 - 0 emission from S0 and S0/a galaxies. The results show that molecular gas is abundant within some early-type disk galaxies, and that the range in the ratio of molecular gas to atomic gas mass is similar to those in other disk galaxies. In the S0 and S0/a galaxies studied, estimated rates of star formation are substantially smaller than, but efficiencies of star formation are roughly the same as, those in Sb or Sc galaxies. Although the rate of cooling of the hot, X-ray emitting gas may be close to the estimated stellar mass return rate in the sample, the star formation rate probably exceeds both by a significant factor.

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