A 6.7 GHz Methanol Maser Survey at High Galactic Latitudes | |
Yang, Kai1,2; Chen, Xi1,3,4; Shen, Zhi-Qiang1,4; Li, Xiao-Qiong1,2; Wang, Jun-Zhi1,4; Jiang, Dong-Rong1,4; Li, Juan1,4; Dong, Jian1,4; Wu, Ya-Jun1,4; Qiao, Hai-Hua1,2 | |
刊名 | ASTROPHYSICAL JOURNAL |
2017-09-10 | |
卷号 | 846期号:2页码:12 |
关键词 | ISM: molecules masers radio lines: ISM stars: formation |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/aa8668 |
通讯作者 | Yang, Kai(yangkai@shao.ac.cn) |
英文摘要 | We performed a systematic 6.7 GHz Class II methanol maser survey using the Shanghai Tianma Radio Telescope toward targets selected from the all-sky Wide-Field Infrared Survey Explorer (WISE) point catalog. In this paper, we report the results from the survey of those at high Galactic latitudes, i.e., vertical bar b vertical bar > 2 degrees. Of 1473 selected WISE point sources at high latitude, 17 point positions that were actually associated with 12 sources were detected with maser emission, reflecting the rarity (1%-2%) of methanol masers in the region away from the Galactic plane. Out of the 12 sources, 3 are detected for the first time. The spectral energy distribution at infrared bands shows that these new detected masers occur in the massive star-forming regions. Compared to previous detections, the methanol maser changes significantly in both spectral profiles and flux densities. The infrared WISE images show that almost all of these masers are located in the positions of the bright WISE point sources. Compared to the methanol masers at the Galactic plane, these high-latitude methanol masers provide good tracers for investigating the physics and kinematics around massive young stellar objects, because they are believed to be less affected by the surrounding cluster environment. |
WOS关键词 | H-II REGIONS ; STAR-FORMING REGIONS ; IRAS-SELECTED SOURCES ; VLBI OBSERVATIONS ; HIGH-RESOLUTION ; CATALOG ; DISCOVERY ; VARIABILITY ; EMISSION ; TRACERS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000410687700008 |
内容类型 | 期刊论文 |
源URL | [http://libir.pmo.ac.cn/handle/332002/22718] |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Yang, Kai |
作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China 3.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Kai,Chen, Xi,Shen, Zhi-Qiang,et al. A 6.7 GHz Methanol Maser Survey at High Galactic Latitudes[J]. ASTROPHYSICAL JOURNAL,2017,846(2):12. |
APA | Yang, Kai.,Chen, Xi.,Shen, Zhi-Qiang.,Li, Xiao-Qiong.,Wang, Jun-Zhi.,...&Ren, Zhiyuan.(2017).A 6.7 GHz Methanol Maser Survey at High Galactic Latitudes.ASTROPHYSICAL JOURNAL,846(2),12. |
MLA | Yang, Kai,et al."A 6.7 GHz Methanol Maser Survey at High Galactic Latitudes".ASTROPHYSICAL JOURNAL 846.2(2017):12. |
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