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题名: NEWLY IDENTIFIED EXTENDED GREEN OBJECTS (EGOs) FROM THE SPITZER GLIMPSE II SURVEY. I. CATALOG
作者: Chen, Xi1, 2; Gan, Cong-Gui1, 2; Ellingsen, Simon P.3; He, Jin-Hua4; Shen, Zhi-Qiang1, 2; Titmarsh, Anita3
刊名: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期: 2013-05-01
卷号: 206, 期号:1
关键词: infrared: ISM ; ISM: jets and outflows ; radio lines: ISM ; stars: formation
DOI: 10.1088/0067-0049/206/1/9
文章类型: Article
英文摘要: We have produced a catalog containing 98 newly identified massive young stellar object (MYSO) candidates associated with ongoing outflows (known as extended green objects, or EGOs). These have been identified from the Spitzer Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) II data set and our new identifications increase the number of known EGOs to similar to 400 in our Galaxy, adding to the similar to 300 previously identified EGOs reported by Cyganowski et al. from the GLIMPSE I survey. The high detection rate (similar to 70%) of 95 GHz class I methanol masers achieved in a survey toward 57 of these new EGOs with the Mopra 22 m radio telescope demonstrates that the new EGOs are associated with outflows. Investigations of the mid-infrared properties and physical associations with other star formation tracers (e.g., infrared dark clouds, class I and II methanol masers, and millimeter Bolocam Galactic Plane Survey sources) reveal that the newly identified EGOs are very similar in nature to those in the sample of Cyganowski et al. All of the observational evidence supports the hypothesis that EGOs correspond to MYSOs at the earliest evolutionary stage, with ongoing outflow activity, and active rapid accretion.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: INFRARED-DARK CLOUDS ; YOUNG STELLAR OBJECTS ; STAR-FORMING REGIONS ; MULTIBEAM MASER CATALOG ; GALACTIC PLANE ; METHANOL MASERS ; MOLECULAR CLOUDS ; MILKY-WAY ; 95 GHZ ; SPECTROSCOPIC IDENTIFICATION
收录类别: SCI
语种: 英语
WOS记录号: WOS:000318556300009
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15531
Appears in Collections:暗物质和空间天文实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100864, Peoples R China
3.Univ Tasmania, Sch Math & Phys, Hobart, Tas, Australia
4.Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan Province, Peoples R China
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