SPITZER OBSERVATIONS OF COLD DUST GALAXIES
SPITZER OBSERVATIONS OF COLD DUST GALAXIES
复制标题
斯皮策对冷尘埃星系的观测
DOI：
10.1088/0004-6256/138/1/146
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
K. Gordon
中科院分区：
文献类型：
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作者：
C. Willmer;G. Rieke;E. Floc’h;J. Hinz;C. Engelbracht;D. Marcillac;K. Gordon
我们结合联合收割机新的斯皮策空间望远镜的中红外和远红外（FIR）的观测与SCUBA 850 μm的观测，以改善测量的尘埃温度，质量和亮度的11个星系的SCUBA本地宇宙星系巡天。通过拟合尘埃模型，我们测量了典型的尘埃质量为107.9M，尘埃光度为1010 L，对于具有适度星星形成率的星系。本文提供的数据结合以前的观测表明，冷尘埃存在于所有类型的旋涡星系中，是它们总光度的主要贡献者。由于本文测量的SCUBA源的尘埃温度较低，因此它们的FIR νFν（160 μm）/νFν（850 μm）斜率比更大的斯皮策红外邻近星系巡天（SINGS）更平坦，SINGS是提供附近宇宙星系尘埃性质最佳测量的样本。这里提供的新数据添加到SINGS扩展了被本地星系很好地覆盖的参数空间，提供了一套全面的模板，可用于解释附近和遥远星系的观测。
We combine new Spitzer Space Telescope observations in the mid-infrared and far-infrared (FIR) with SCUBA 850 μm observations to improve the measurement of dust temperatures, masses, and luminosities for 11 galaxies of the SCUBA Local Universe Galaxy Survey. By fitting dust models we measure typical dust masses of 107.9M☉ and dust luminosities of ∼1010L☉, for galaxies with modest star formation rates. The data presented in this paper combined with previous observations show that cold dust is present in all types of spiral galaxies and is a major contributor to their total luminosity. Because of the lower dust temperature of the SCUBA sources measured in this paper, they have flatter FIR νFν(160 μm)/νFν(850 μm) slopes than the larger Spitzer Infrared Nearby Galaxies Survey (SINGS), the sample that provides the best measurements of the dust properties of galaxies in the nearby universe. The new data presented here added to SINGS extend the parameter space that is well covered by local galaxies, providing a comprehensive set of templates that can be used to interpret the observations of nearby and distant galaxies.
DOI：
10.1117/12.550744
发表时间：
2004-07
期刊：
--
影响因子：
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作者：
G. Fazio;J. Hora;L. E. Allen;M. Ashby;P. Barmby;L. Deutsch;J.-S. Huang;S. Kleiner;M. Marengo-M.
通讯作者：
G. Fazio;J. Hora;L. E. Allen;M. Ashby;P. Barmby;L. Deutsch;J.-S. Huang;S. Kleiner;M. Marengo-M.