AAS Meeting #193 - Austin, Texas, January 1999
Session 71. Molecular Clouds
Display, Friday, January 8, 1999, 9:20am-6:30pm, Exhibit Hall 1

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[71.17] Submillimeter Maps of Bok Globule Cores: Evidence for Single and Multiple Epoch Star Formation

T. Huard, D. A. Weintraub (Vanderbilt U.), G. Sandell (Joint Astronomy Centre)

Eighteen of the coldest IRAS sources associated with Bok globules were mapped at 450 \mum and 850 \mum using the submillimeter common user bolometer array SCUBA on the JCMT. Half of these IRAS sources were detected at these wavelengths. Most of the globule cores were observed to have only one submillimeter peak; however, cores with multiple peaks were found in the more massive globules located more than a kiloparsec away. For both the nearby and distant globules, some of the positions of peak submillimeter emission are different from the positions of near-infrared sources located in the globules. Assuming these near-infrared sources are more evolved pre-main-sequence objects than the protostars detected only as submillimeter sources, then these observations may suggest that multiple epochs of star formation are possible in both the less massive, nearby globules and the more massive, distant globules.

The author(s) of this abstract have provided an email address for comments about the abstract: huard@juggler.phy.vanderbilt.edu

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