Spitzer and HHT Observations of Bok Globule B335: Isolated Star Formation Efficiency and Cloud Structure
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 obser...
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| Veröffentlicht in: | The Astrophysical journal 2008-11, Vol.687 (1), p.389-405 |
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| creator | Stutz, Amelia M Rubin, Mark Werner, Michael W Rieke, George H Bieging, John H Keene, Jocelyn Kang, Miju Shirley, Yancy L Su, K. Y. L Velusamy, Thangasamy Wilner, David J |
| description | 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 [mu]m shadow. Heinrich Hertz Telescope (HHT) observations of super(12)CO 2-1 confirm the detection of a flattened molecular core with diameter [image]10,000 AU and the same orientation as the circumstellar disk ([image]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 [image]5% of the mass of the parent globule. |
| doi_str_mv | 10.1086/591789 |
| format | Article |
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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. 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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. 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L</au><au>Velusamy, Thangasamy</au><au>Wilner, David J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spitzer and HHT Observations of Bok Globule B335: Isolated Star Formation Efficiency and Cloud Structure</atitle><jtitle>The Astrophysical journal</jtitle><date>2008-11-01</date><risdate>2008</risdate><volume>687</volume><issue>1</issue><spage>389</spage><epage>405</epage><pages>389-405</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>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 [mu]m shadow. Heinrich Hertz Telescope (HHT) observations of super(12)CO 2-1 confirm the detection of a flattened molecular core with diameter [image]10,000 AU and the same orientation as the circumstellar disk ([image]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 [image]5% of the mass of the parent globule.</abstract><cop>Chicago, IL</cop><pub>IOP Publishing</pub><doi>10.1086/591789</doi><tpages>17</tpages></addata></record> |
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| title | Spitzer and HHT Observations of Bok Globule B335: Isolated Star Formation Efficiency and Cloud Structure |
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