Star formation in the M17 SW giant molecular cloud

Details Star formation in the M17 SW giant molecular cloud Star formation in the M17 SW giant molecular cloud

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...257l..77j&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 257, June 15, 1982, p. L77-L81.

Astronomy and Astrophysics

Astronomy

17

Density Wave Model, Infrared Astronomy, Molecular Clouds, Star Formation, Stochastic Processes, B Stars, Early Stars, Late Stars, Luminosity, O Stars

Scientific paper

The first high-sensitivity, high-resolution far-IR survey of an entire molecular cloud complex is presented. The 20 km/s M17 SW complex, in addition to the three luminous M17 sources, contains 10 sources spread over 110 pc. The 10 lower luminosity sources divide into two groups: small blister sources powered by late O stars and compact sources powered by clusters of early B stars. No compact far-IR sources with luminosities between the detection limit and 10,000 solar luminosities were detected. Three possible formation mechanisms for the stars that power the far-IR sources in the M17 SW complex are examined. Sequential formation cannot explain the sources seen throughout the complex. Some type of stochastic formation mechanism or collapse induced by a spiral density wave could explain the observations.

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