斯皮策c2d大型邻近星际云巡天VIII。使用MIPS观察到的蛇形物
The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds VIII. Serpens Observed with MIPS
摘要：
我们目前的地图，1.5平方度的巨蛇座暗云在24，70和160 \micron观察斯皮策太空望远镜MIPS相机。在24um处已经提取了2400多个致密源，在70um处提取了近100个致密源，在160um处提取了4个致密源。我们估计我们的24微米的调查与人工源插入斯皮策地图的Monte Carlo测试的完整性限制。我们将巨蛇座星云中的源计数、颜色和星等与两个参考数据集进行了比较，一个是在暗星云附近的低消光区域上的0.50 deg^2集，另一个是通过我们的管道处理的SWIRE ELAIS N1数据的5.3 deg^2子集。这些结果表明，在巨蛇座星云中有一个很容易识别的年轻恒星候选者群体，这在任何一个参考数据集中都不存在。我们还展示了视觉消光和冷尘埃排放的比较，说明两者之间的密切相关性，并发现最嵌入的YSO候选人位于最高的视觉消光的地区。
英文摘要：
We present maps of 1.5 square degrees of the Serpens dark cloud at 24, 70, and 160\micron observed with the Spitzer Space Telescope MIPS Camera. More than 2400 compact sources have been extracted at 24um, nearly 100 at 70um, and 4 at 160um. We estimate completeness limits for our 24um survey from Monte Carlo tests with artificial sources inserted into the Spitzer maps. We compare source counts, colors, and magnitudes in the Serpens cloud to two reference data sets, a 0.50 deg^2 set on a low-extinction region near the dark cloud, and a 5.3 deg^2 subset of the SWIRE ELAIS N1 data that was processed through our pipeline. These results show that there is an easily identifiable population of young stellar object candidates in the Serpens Cloud that is not present in either of the reference data sets. We also show a comparison of visual extinction and cool dust emission illustrating a close correlation between the two, and find that the most embedded YSO candidates are located in the areas of highest visual extinction.
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