GLIMPSE Extended Green Objects and the Early Stages of Massive Star Formation

被引：0
|
作者：
Cyganowski, Claudia J. [1 ]
Brogan, Crystal L. [2 ]
Hunter, Todd R. [2 ]
Churchwell, Ed [3 ]
Whitney, Barbara A. [3 ]
Zhang, Qizhou [1 ]
机构：
[1] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
[2] Natl Radio Astron Observ, Charlottesville, VA 22903 USA
[3] Univ Wisconsin Madison, Dept Astron, Madison, WI 53706 USA
来源：
LABYRINTH OF STAR FORMATION | 2014年 / 36卷
关键词：
METHANOL MASERS; EGOS; CATALOG;
D O I：
10.1007/978-3-319-03041-8_76
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Large-scale Spitzer surveys of the Galactic plane have yielded a new tracer of massive young stellar objects (MYSOs) that are actively accreting and driving outflows: extended emission in the IRAC 4.5 mu m band, believed to arise from shocked molecular gas. The GLIMPSE catalog of extended 4.5 mu m sources (called EGOs, Extended Green Objects, for the common coding of 3-color IRAC images) is a unique sample, well-suited for studying the initial stages of massive star formation and establishing an observation-based MYSO evolutionary sequence. In this proceeding, we present results from extensive recent high-resolution Sub-millimeter Array (SMA) and Very Large Array (VLA) observations of EGOs at cm-mm wavelengths, including maser, molecular line, and continuum studies. These observations often reveal (proto) clusters that exhibit chemical and evolutionary diversity.
引用
收藏
页码：391 / 394
页数：4
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