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The Dust Emissivity Spectral Index in the Starless Core TMC-1C

Schnee, Scott and Enoch, Melissa and Noriega-Crespo, Alberto and Sayers, Jack and Terebey, Susan and Caselli, Paola and Foster, Jonathan and Goodman, Alyssa and Kauffmann, Jens and Padgett, Deborah and Rebull, Luisa and Sargent, Anneila and Shetty, Rahul (2010) The Dust Emissivity Spectral Index in the Starless Core TMC-1C. Astrophysical Journal, 708 (1). pp. 127-136. ISSN 0004-637X.

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In this paper, we present a dust emission map of the starless core TMC-1C taken at 2100 μm. Along with maps at 160, 450, 850, and 1200 μm, we study the dust emissivity spectral index from the (sub)millimeter spectral energy distribution, and find that it is close to the typically assumed value of β = 2. We also map the dust temperature and column density in TMC-1C, and find that at the position of the dust peak (A_V ~ 50) the line-of-sight-averaged temperature is ~7 K. Employing simple Monte Carlo modeling, we show that the data are consistent with a constant value for the emissivity spectral index over the whole map of TMC-1C.

Item Type:Article
Related URLs:
URLURL TypeDescription
Noriega-Crespo, Alberto0000-0002-6296-8960
Sayers, Jack0000-0002-8213-3784
Caselli, Paola0000-0003-1481-7911
Padgett, Deborah0000-0001-5334-5107
Rebull, Luisa0000-0001-6381-515X
Sargent, Anneila0000-0002-4633-5098
Additional Information:© 2010. The American Astronomical Society. Received 27 July 2009, accepted for publication 6 November 2009, Published 8 December 2009. We thank our referee, Yancy Shirley, for comments that improved the clarity of this paper. S.S. acknowledges support from the Owens Valley Radio Observatory, which is supported by the National Science Foundation through grant AST 05-40399. J.S. was partially supported by a NASA Postdoctoral Program Fellowship. Support was provided to M.E. by NASA through the Spitzer Space Telescope Fellowship Program. The JCMT is operated by the Joint Astronomy Centre on behalf of the Particle Physics and Astronomy Research Council of the United Kingdom, the Netherlands Organisation for Scientific Research, and the National Research Council of Canada. IRAM is supported by INSU/CNRS (France), MPG (Germany), and IGN (Spain). The CSO is supported by the NSF fund under contract AST 02-29008.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Owens Valley Radio ObservatoryUNSPECIFIED
NSFAST 05-40399
NASA Postdoctoral ProgramUNSPECIFIED
NASA Spitzer FellowshipUNSPECIFIED
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
National Research Council of CanadaUNSPECIFIED
Institut national des sciences de l'Univers (INSU)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Instituto Geográfico Nacional (IGN)UNSPECIFIED
NSFAST 02-29008
Subject Keywords:dust, extinction, stars: formation
Issue or Number:1
Record Number:CaltechAUTHORS:20150817-124811557
Persistent URL:
Official Citation:Scott Schnee et al. 2010 ApJ 708 127
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59631
Deposited By: Luisa Rebull
Deposited On:18 Aug 2015 19:20
Last Modified:09 Mar 2020 13:19

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