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

页码：391 / 394

页数：4

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