PMO OpenIR
Accurate OH Maser Positions. II. The Galactic Center Region
Qiao, Hai-Hua1,2; Walsh, Andrew J.3,4; Breen, Shari L.5; Gomez, Jose F.6; Dawson, J. R.3,4; Imai, Hiroshi7,8; Ellingsen, Simon P.9; Green, James A.10; Shen, Zhi-Qiang2,11
2018-11-01
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
ISSN0067-0049
Volume239Issue:1Pages:23
Corresponding AuthorQiao, Hai-Hua(qiaohh@shao.ac.cn)
AbstractWe 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.
Keywordcatalogs ISM: molecules masers radio lines: ISM stars: AGB and post-AGB stars: formation
DOI10.3847/1538-4365/aae580
WOS KeywordLATE-TYPE STARS ; INTERSTELLAR HYDROXYL MASERS ; EMITTING PLANETARY-NEBULAE ; FULL POLARIZATION SPECTRA ; 1612 MHZ SURVEY ; OH/IR STARS ; INNER GALAXY ; IRAS SOURCES ; METHANOL MASERS ; WATER MASERS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000450304000002
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/20915
Collection中国科学院紫金山天文台
Corresponding AuthorQiao, Hai-Hua
Affiliation1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
3.Macquarie Univ, Dept Phys & Astron, N Ryde, NSW 2109, Australia
4.Macquarie Univ, MQ Res Ctr Astron Astrophys & Astrophoton, N Ryde, NSW 2109, Australia
5.Univ Sydney, Sch Phys, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia
6.CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain
7.Kagoshima Univ, Ctr Gen Educ, 1-21-30 Korimoto, Kagoshima 8900065, Japan
8.Kagoshima Univ, Grad Sch Sci & Engn, Dept Phys & Astron, 1-21-35 Korimoto, Kagoshima 8900065, Japan
9.Univ Tasmania, Sch Phys Sci, Private Bag 37, Hobart, Tas 7001, Australia
10.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 2121, Australia
11.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China
Recommended Citation
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):23.
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),23.
MLA Qiao, Hai-Hua,et al."Accurate OH Maser Positions. II. The Galactic Center Region".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 239.1(2018):23.
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