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

Amelia M. Stutz; Mark Rubin; Michael W. Werner; George H. Rieke; John H. Bieging; Jocelyn Keene; Miju Kang; Yancy L. Shirley; Kate Yu-Ling Su; Thangasamy Velusamy; David J. Wilner

doi:10.1086/591789

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

Amelia M. Stutz, Mark Rubin, Michael W. Werner, George H. Rieke, John H. Bieging, Jocelyn Keene, Miju Kang, Yancy L. Shirley, Kate Yu-Ling Su, Thangasamy Velusamy, David J. Wilner

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52 Scopus citations

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 μm shadow. Heinrich Hertz Telescope (HHT) observations of ¹²CO 2-1 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 μm 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.

Original language	English (US)
Pages (from-to)	389-405
Number of pages	17
Journal	Astrophysical Journal
Volume	687
Issue number	1
DOIs	https://doi.org/10.1086/591789
State	Published - Nov 1 2008

Keywords

ISM: globules
ISM: individual (Barnard 335)
Infrared: ISM
Stars: formation

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/591789

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title = "Spitzer and HHT observations of Bok globule B335: Isolated star formation efficiency and cloud structure",

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 μm shadow. Heinrich Hertz Telescope (HHT) observations of 12CO 2-1 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 μm 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.",

keywords = "ISM: globules, ISM: individual (Barnard 335), Infrared: ISM, Stars: formation",

author = "Stutz, {Amelia M.} and Mark Rubin and Werner, {Michael W.} and Rieke, {George H.} and Bieging, {John H.} and Jocelyn Keene and Miju Kang and Shirley, {Yancy L.} and Su, {Kate Yu-Ling} and Thangasamy Velusamy and Wilner, {David J.}",

year = "2008",

month = nov,

day = "1",

doi = "10.1086/591789",

language = "English (US)",

volume = "687",

pages = "389--405",

journal = "Astrophysical Journal",

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publisher = "American Astronomical Society",

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TY - JOUR

T1 - Spitzer and HHT observations of Bok globule B335

T2 - Isolated star formation efficiency and cloud structure

AU - Stutz, Amelia M.

AU - Rubin, Mark

AU - Werner, Michael W.

AU - Rieke, George H.

AU - Bieging, John H.

AU - Keene, Jocelyn

AU - Kang, Miju

AU - Shirley, Yancy L.

AU - Su, Kate Yu-Ling

AU - Velusamy, Thangasamy

AU - Wilner, David J.

PY - 2008/11/1

Y1 - 2008/11/1

N2 - 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 12CO 2-1 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 μm 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.

AB - 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 12CO 2-1 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 μm 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.

KW - ISM: globules

KW - ISM: individual (Barnard 335)

KW - Infrared: ISM

KW - Stars: formation

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U2 - 10.1086/591789

DO - 10.1086/591789

M3 - Article

AN - SCOPUS:54949121806

SN - 0004-637X

VL - 687

SP - 389

EP - 405

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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