Accurate OH Maser Positions. II. The Galactic Center Region
文献类型：期刊论文
| 作者 | Qiao, Hai-Hua9,10; Walsh, Andrew J.7,8; Breen, Shari L.6; Gomez, Jose F.5; Dawson, J. R.7,8; Imai, Hiroshi3,4; Ellingsen, Simon P.2; Green, James A.1; Shen, Zhi-Qiang9,11 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2018-11-01 |
| 卷号 | 239期号:1 |
| ISSN号 | 0067-0049 |
| 关键词 | Catalogs Ism: Molecules Masers Radio Lines: Ism Stars: Agb And post-Agb Stars: Formation |
| DOI | 10.3847/1538-4365/aae580 |
| 英文摘要 | We present high spatial resolution observations of ground-state OH masers achieved using the Australia Telescope Compact Array (ATCA). These observations were conducted toward 171 pointing centers where OH maser candidates were identified previously in the Southern Parkes Large-Area Survey in Hydroxyl toward the Galactic center region between Galactic longitudes of 355 degrees and 5 degrees and Galactic latitudes of -2 degrees and + 2 degrees. We detect maser emission toward 162 target fields and suggest that six out of nine nondetections are due to intrinsic variability. Due to the superior spatial resolution of the follow-up ATCA observations, we have identified 356 OH maser sites in the 162 target fields with maser detections. Almost half (161 of 356) of these maser sites have been detected for the first time in these observations. After comparing the positions of these 356 maser sites to the literature, we find that 269 (76%) sites are associated with evolved stars (two of which are PNe), 31 (9%) are associated with star formation, and four are associated with supernova remnants; we were unable to determine the origin of the remaining 52 (15%) sites. Unlike the pilot region, the infrared colors of evolved star sites with symmetric maser profiles in the 1612 MHz transition do not show obvious differences compared with those of evolved star sites with asymmetric maser profiles. |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000450304000002 |
| 源URL | [http://119.78.226.72/handle/331011/32197]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Qiao, Hai-Hua |
| 作者单位 | 1.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 2121, Australia 2.Univ Tasmania, Sch Phys Sci, Private Bag 37, Hobart, Tas 7001, Australia 3.Kagoshima Univ, Grad Sch Sci & Engn, Dept Phys & Astron, 1-21-35 Korimoto, Kagoshima 8900065, Japan 4.Kagoshima Univ, Ctr Gen Educ, 1-21-30 Korimoto, Kagoshima 8900065, Japan 5.CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain 6.Univ Sydney, Sch Phys, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia 7.Macquarie Univ, MQ Res Ctr Astron Astrophys & Astrophoton, N Ryde, NSW 2109, Australia 8.Macquarie Univ, Dept Phys & Astron, N Ryde, NSW 2109, Australia 9.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 10.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiao, Hai-Hua,Walsh, Andrew J.,Breen, Shari L.,et al. Accurate OH Maser Positions. II. The Galactic Center Region[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2018,239(1). |
| APA | Qiao, Hai-Hua.,Walsh, Andrew J..,Breen, Shari L..,Gomez, Jose F..,Dawson, J. R..,...&Shen, Zhi-Qiang.(2018).Accurate OH Maser Positions. II. The Galactic Center Region.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,239(1). |
| MLA | Qiao, Hai-Hua,et al."Accurate OH Maser Positions. II. The Galactic Center Region".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 239.1(2018). |
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来源：上海天文台
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