期刊
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
卷 193, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0067-0049/193/2/25
关键词
circumstellar matter; infrared: ISM; infrared: stars; ISM: clouds; ISM: individual objects (NGC 7000, IC 5070, LDN 935); stars: formation; stars: pre-main sequence
资金
- National Aeronautics and Space Administration
- National Science Foundation
- U.S. Government [NAG W-2166]
We present observations of similar to 7 deg(2) of the North American and Pelican Nebulae region at 24, 70, and 160 mu m with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS). We incorporate the MIPS observations with earlier Spitzer Infrared Array Camera (IRAC) observations, as well as archival near-infrared (IR) and optical data. We use the MIPS data to identify 1286 young stellar object (YSO) candidates. IRAC data alone can identify 806 more YSO candidates, for a total of 2076 YSO candidates. Prior to the Spitzer observations, there were only similar to 200 YSOs known in this region. Three subregions within the complex are highlighted as clusters: the Gulf of Mexico, the Pelican, and the Pelican's Hat. The Gulf of Mexico cluster is subject to the highest extinction (A(V) at least similar to 30) and has the widest range of infrared colors of the three clusters, including the largest excesses and by far the most point-source detections at 70 mu m. Just 3% of the cluster members were previously identified; we have redefined this cluster as about 10-100 times larger (in projected area) than was previously realized.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据