A 95 GHz CLASS I METHANOL MASER SURVEY TOWARD A SAMPLE OF GLIMPSE POINT SOURCES ASSOCIATED WITH BGPS CLUMPS

	A 95 GHz CLASS I METHANOL MASER SURVEY TOWARD A SAMPLE OF GLIMPSE POINT SOURCES ASSOCIATED WITH BGPS CLUMPS
	Chen, X 1,2; Ellingsen, SP 3; He JH(何金华)4 ; Xu, Y 5; Gan, CG1,2 ; Shen, ZQ 1,2; An, T 1,2; Sun, Y 5; Ju, BG 5
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2012-05
卷号	200 期号:1
关键词	infrared: ISM ISM: molecules masers radio lines: ISM stars: formation
ISSN号	0067-0049
通讯作者	Chen, X (reprint author), Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China.
产权排序	第四完成单位
英文摘要	We report a survey with the Purple Mountain Observatory 13.7 m radio telescope for class I methanol masers from the 95 GHz (8(0)-7(1) A(+)) transition. Two hundred and fourteen target sources were selected by combining information from both the Spitzer GLIMPSE and 1.1 mm Bolocam Galactic Plane Survey (BGPS) catalogs. The observed sources satisfy the GLIMPSE mid-IR criteria of [3.6]-[4.5] > 1.3, [3.6]-[5.8] > 2.5, [3.6]-[8.0]> 2.5 and 8.0 mu m mag less than 10; they also have an associated 1.1 mm BGPS source. Class I methanol maser emission was detected in 63 sources, corresponding to a detection rate of 29% for this survey. For the majority of detections (43), this is the first identification of class I methanol masers associated with these sources. We show that the intensity of the class I methanol maser emission is not closely related to mid-IR intensity or the colors of the GLIMPSE point sources; however, it is closely correlated with properties (mass and beam-averaged column density) of the BGPS sources. Comparison of measures of star formation activity for the BGPS sources with and without class I methanol masers indicates that the sources with class I methanol masers usually have higher column density and larger flux density than those without them. Our results predict that the criteria log(S-int) <= -38.0 + 1.72 log(N-H2(beam)) and log(N-H2(beam)) >= 22.1, which utilizes both the integrated flux density (S-int) and beam-averaged column density (N-H2(beam) ) of the BGPS sources, are very efficient for selecting sources likely to have an associated class I methanol maser. Our expectation is that searches using these criteria will detect 90% of the predicted number of class I methanol masers from the full BGPS catalog (similar to 1000), and that they will do so with a high detection efficiency (similar to 75%).
学科主题	Astronomy & Astrophysics
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 ; EXTENDED GREEN OBJECTS ; GALACTIC PLANE SURVEY ; STAR-FORMING REGIONS ; YOUNG STELLAR OBJECTS ; PHYSICAL-PROPERTIES ; MOLECULAR CLOUD ; MILKY-WAY ; CATALOG ; BOLOCAM
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0067-0049/200/1/5/meta
语种	英语
WOS记录号	WOS:000303928300005
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4537]
专题	云南天文台_大样本恒星演化研究组
作者单位	1.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China 2.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, China 3.School of Mathematics and Physics, University of Tasmania, Hobart, Tasmania, Australia 4.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China 5.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
推荐引用方式 GB/T 7714	Chen, X,Ellingsen, SP,He JH,et al. A 95 GHz CLASS I METHANOL MASER SURVEY TOWARD A SAMPLE OF GLIMPSE POINT SOURCES ASSOCIATED WITH BGPS CLUMPS[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2012,200(1).
APA	Chen, X.,Ellingsen, SP.,He JH.,Xu, Y.,Gan, CG.,...&Ju, BG.(2012).A 95 GHz CLASS I METHANOL MASER SURVEY TOWARD A SAMPLE OF GLIMPSE POINT SOURCES ASSOCIATED WITH BGPS CLUMPS.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,200(1).
MLA	Chen, X,et al."A 95 GHz CLASS I METHANOL MASER SURVEY TOWARD A SAMPLE OF GLIMPSE POINT SOURCES ASSOCIATED WITH BGPS CLUMPS".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 200.1(2012).