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Spitzer and HHT observations of Bok globule B335: isolated star formation efficiency and cloud structure

Stutz, Amelia M. and Rubin, Mark and Werner, Michael W. and Rieke, George H. and Bieging, John H. and Keene, Jocelyn and Kang, Miju and Shirley, Yancy L. and Su, K. Y. L. and Velusamy, Thangasamy and Wilner, David J. (2008) Spitzer and HHT observations of Bok globule B335: isolated star formation efficiency and cloud structure. Astrophysical Journal, 687 (1). pp. 389-405. ISSN 0004-637X. doi:10.1086/591789.

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We present infrared and millimeter observations of Barnard 335, the prototypical isolated Bok globule with an embedded protostar. Using Spitzer data we measure the source luminosity accurately; we also constrain the density profile of the innermost globule material near the protostar using the observation of an 8.0 μm shadow. Heinrich Hertz Telescope (HHT) observations of ^12CO2-1 confirm the detection of a flattened molecular core with diameter ~10,000 AU and the same orientation as the circumstellar disk (~100 to 200 AU in diameter). This structure is probably the same as that generating the 8.0 mu m shadow and is expected from theoretical simulations of collapsing embedded protostars. We estimate the mass of the protostar to be only ~5% of the mass of the parent globule.

Item Type:Article
Related URLs:
URLURL TypeDescription
Stutz, Amelia M.0000-0003-2300-8200
Rieke, George H.0000-0003-2303-6519
Kang, Miju0000-0002-5016-050X
Su, K. Y. L.0000-0002-3532-5580
Wilner, David J.0000-0003-1526-7587
Additional Information:© 2008 American Astronomical Society. Received 2008 June 4, accepted for publication 2008 July 12. We thank Kevin M. Flaherty, Fabian Heitsch, and Craig Kulesa for helpful comments. We thank Thomas Robitaille for his help with model fitting. The authors also thank the anonymous referee for helpful comments that improved the text. A. M. S. thanks the c2d team members for insightful comments. Portions of this work were carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This work was supported by contract 1255094 issued by Caltech/JPL to the University of Arizona. This work was supported in part by National Science Foundation grant AST-0708131 to the University of Arizona. M. K. was supported by the KRF-2007-612-C00050 grant.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
National Research Foundation of KoreaKRF-2007-612-C00050
Subject Keywords:infrared: ISM; ISM: globules; ISM: individual (Barnard 335); stars: formation
Issue or Number:1
Record Number:CaltechAUTHORS:STUapj08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13368
Deposited By: Tony Diaz
Deposited On:23 Apr 2009 22:53
Last Modified:08 Nov 2021 22:37

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