| A 95 GHz CLASS I METHANOL MASER SURVEY TOWARD A SAMPLE OF GLIMPSE POINT SOURCES ASSOCIATED WITH BGPS CLUMPS | |
Chen, X1,2; Ellingsen, SP3; He JH(何金华)4 ; Xu, Y5; Gan, CG1,2; Shen, ZQ1,2; An, T1,2; Sun, Y5; Ju, BG5; Chen, X (reprint author), Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China.
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| 发表期刊 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
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| 2012-05 | |
| 卷号 | 200期号:1 |
| DOI | 10.1088/0067-0049/200/1/5 |
| 产权排序 | 第4完成单位 |
| 收录类别 | SCI |
| 关键词 | Infrared: Ism Ism: Molecules Masers Radio Lines: Ism Stars: Formation |
| 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%). |
| 项目资助者 | National Aeronautics and Space Administration ; BGPS survey database ; China Ministry of Science and Technology [2012CB821800] ; National Natural Science Foundation of China [10621303, 10625314, 10803017, 10821302, 11073041, 11073054, 11133008, 11173046] ; CAS/SAFEA ; Key Laboratory for Radio Astronomy, CAS |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0067-0049 |
| URL | 查看原文 |
| WOS记录号 | WOS:000303928300005 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | 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 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4537 |
| 专题 | 大样本恒星演化研究组 |
| 通讯作者 | Chen, X (reprint author), Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China. |
| 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.,...&Chen, X .(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). |
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| A 95_GHz CLASS_I MET（2309KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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