ISO and the initial conditions of star formation

Details ISO and the initial conditions of star formation ISO and the initial conditions of star formation

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999esasp.427..463w&link_type=abstract

The Universe as Seen by ISO. Eds. P. Cox & M. F. Kessler. ESA-SP 427., p. 463

Physics

6

Star Formation

Scientific paper

We present the results of an ISOPHOT study of pre-stellar cores. The pre-stellar phase is one in which a dense core in a molecular cloud is gravitationally bound, but contains no embedded luminosity source. This takes place prior to the protostellar Class 0 phase. Hence pre-stellar cores are believed to represent the initial conditions of star formation. Pre-stellar cores were not detected by IRAS, but have been detected by ISOPHOT at 200 and 170 μm, but typically not at 90 μm. The lack of detections at 90 μm shows that there is no significant quantity of warm dust in these cores, confirming their lack of a protostellar heating source. Consequently, a single temperature modified black-body can fit the data, which allows submillimetre measurements to be converted into more accurate mass estimates.

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