AAS 207th Meeting, 8-12 January 2006
Session 184 Masers, Millimeter and Centimeter Observations of Protostars
Poster, Thursday, 9:20am-4:00pm, January 12, 2006, Exhibit Hall

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[184.16] Probing the Inner 200 AU of Low-Mass Protostars with the Submillimeter Array

J. K. Jorgensen, T. L. Bourke (CfA), J. Di Francesco (Herzberg Institute of Astrophysics), C.-F. Lee, P. C. Myers (CfA), N. Ohashi (ASIAA), F. L. Schoeier (Stockholm Observatory), S. Takakuwa (NAO), E. F. van Dishoeck (Leiden Observatory), D. J. Wilner, Q. Zhang (CfA)

We present high angular resolution (1"; 200 AU) observations from a large program studying deeply embedded low-mass protostars (class 0 objects) with the Submillimeter Array. In total 9 different sources have been observed in a wide variety of lines of common molecular species together with continuum. The observations are interpreted on basis of detailed dust and line radiative transfer models. The continuum observations resolve the innermost regions of the protostellar envelopes and place strong constraints on the presence and properties of their circumstellar disks. The line observations reveal the complex structure of these sources, for example, the chemical and dynamical variations throughout the envelopes and the importance of the outflows on both. The research of JKJ was supported by NASA Origins Grant NAG5-13050. The Submillimeter Array is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics.

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