Astronomy and Astrophysics – Astronomy
Scientific paper
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.
Fazio Giacomo
Jaffe Daniel T.
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