The Dust Emissivity Spectral Index in the Starless Core TMC-1C
Scott Schnee, Melissa Enoch, Alberto Noriega-Crespo, Jack Sayers, Susan Terebey, Paola Caselli, Jonathan Foster, Alyssa Goodman, Jens Kauffmann, Deborah Padgett… 展开作者
Scott Schnee, Melissa Enoch, Alberto Noriega-Crespo, Jack Sayers, Susan Terebey, Paola Caselli, Jonathan Foster, Alyssa Goodman, Jens Kauffmann, Deborah Padgett, Luisa Rebull, Anneila Sargent, Rahul Shetty
备注：
11 pages, including 5 pages of figures. Accepted to ApJ
In this paper we present a dust emission map of the starless core TMC-1C taken at 2100 microns. Along with maps at 160, 450, 850 and 1200 microns, 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 beta = 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.
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Massachusetts Institute of Technology（麻省理工学院）；Center for Astrophysics | Harvard & Smithsonian（天体物理中心 | 哈佛与史密森尼学会）；University of British Columbia（不列颠哥伦比亚大学）；National Radio Astronomy Observatory（国家射电天文台）；NSF–Simons AI Institute for Cosmic Origins（NSF-西蒙斯宇宙起源AI研究所）；University of Michigan（密歇根大学）；Worcester State University（伍斯特州立大学）；NASA Goddard Space Flight Center（美国宇航局戈达德太空飞行中心）
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