Massive Star Formation Along the Hubble Sequence

Details Massive Star Formation Along the Hubble Sequence Massive Star Formation Along the Hubble Sequence

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....113..599d&link_type=abstract

Astronomical Journal v.113, p.599

Astronomy and Astrophysics

Astronomy

38

Stars: Formation, Galaxies: Early-Type

Scientific paper

Far-infrared fluxes have been extracted from the IRAS database for galaxies in the Nearby Galaxies Catalog. The IRAS data are used to determine the Hubble type dependence of the far-infrared luminosity, the L(FIR)/L(Blue) luminosity ratio and, for a subset of the galaxies, the L(FIR)/M(H2) ratio. Adopting the far-infrared luminosity as a measure of the massive star formation rate, one finds that the IRAS data reveal a previously unsuspected population of early-type (Sa-Sab) spirals with massive star formation rates that rival the most prodigiously star-forming Sc galaxies. Thus, the IRAS data do not support the distinction between the global star-forming capabilities of early- and late-type spirals that has been reported previously in the published literature.

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