THE DUST EMISSIVITY SPECTRAL INDEX IN THE STARLESS CORE TMC-1C
THE DUST EMISSIVITY SPECTRAL INDEX IN THE STARLESS CORE TMC-1C
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DOI：
10.1088/0004-637x/708/1/127
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发表时间：
2009-11
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通讯作者：
S. Schnee;M. Enoch;A. Noriega-Crespo;J. Sayers;S. Terebey;P. Caselli;J. Foster;A. Goodman;J. Kauffmann;D. Padgett;L. Rebull;A. Sargent;R. Shetty
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作者：
S. Schnee;M. Enoch;A. Noriega-Crespo;J. Sayers;S. Terebey;P. Caselli;J. Foster;A. Goodman;J. Kauffmann;D. Padgett;L. Rebull;A. Sargent;R. Shetty
本文给出了TMC-1C无星核2100 μm处的尘埃辐射图。沿着160、450、850和1200 μm的地图，我们研究了（亚）毫米光谱能量分布的尘埃发射率光谱指数，发现它接近通常假设的β = 2值。我们还绘制了TMC-1C的尘埃温度和尘埃柱密度图，发现在尘埃峰值（AV_（50））处，视线平均温度为107 K。采用简单的蒙特卡罗模拟，我们表明，数据是一致的，在TMC-1C的整个地图上的发射率光谱指数的一个恒定值。
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 (AV ∼ 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.