ISO Observations of Starless Bok Globules: Usually No Embedded Stars

Details ISO Observations of Starless Bok Globules: Usually No Embedded Stars ISO Observations of Starless Bok Globules: Usually No Embedded Stars

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996stin...9928505c&link_type=abstract

Technical Report, Boston Univ. Boston, MA United States Astronomy Dept.

Astronomy and Astrophysics

Astronomy

Globules, Infrared Astronomy Satellite, Hydrogen, Infrared Space Observatory (Iso), Molecular Clouds, Data Reduction, Mass

Scientific paper

We have used ISOCAM to search the cores of a sample of small Bok globules previously classified to be mostly starless based on analysis of IRAS data. The ISO observations at 6.75microns (LW2 filter) and 14.5microns (LW3 filter) were sufficiently deep to enable detection of any low-mass hydrogen burning star or young stellar object (YSO) embedded in these globules. Of the 20 Bok globules observed by ISOCAM to date, we have reduced the data for 14. Of these, 13 show no evidence for faint red (Sv)(LW3 greater than Sv)(LW2) stars missed by IRAS. One (CB68) does show the first mid-infrared detection of the very cool IRAS source toward this cloud, and may be a Class I or 0 YSO. We conclude, based on these new ISO observations, that Bok globules which have no IRAS sources are in general bona fide starless molecular clouds.

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