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Distances to molecular clouds at high galactic latitudes based on Gaia DR2
Yan, Qing-Zeng1,2; Zhang, Bo2; Xu, Ye1; Guo, Sufen2,3; Macquart, Jean-Pierre4; Tang, Zheng-Hong2,3; Walsh, Andrew John5,6
2019-03-29
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN1432-0746
Volume624Pages:13
Corresponding AuthorYan, Qing-Zeng(qzyan@pmo.ac.cn)
AbstractWe report the distances of molecular clouds at high Galactic latitudes (vertical bar b vertical bar > 10 degrees) derived from parallax and G-band extinction (A(G)) measurements in the second Gaia data release, Gaia DR2. Aided by Bayesian analyses, we determined distances by identifying the breakpoint in the extinction A(G) toward molecular clouds and using the extinction A(G) of Gaia stars around molecular clouds to confirm the breakpoint. We used nearby star-forming regions, such as Orion, Taurus, Cepheus, and Perseus, whose distances are well known to examine the reliability of our method. By comparing with previous results, we found that the molecular cloud distances derived from this method are reliable. The systematic error in the distances is approximately 5%. In total, 52 molecular clouds have well-determined distances, most of which are at high Galactic latitudes, and we provide reliable distances for 13 molecular clouds for the first time.
Keyworddust, extinction ISM: clouds
DOI10.1051/0004-6361/201834337
WOS KeywordCEPHEUS FLARE ; GAS ; CATALOG ; DUST
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000462844500005
PublisherEDP SCIENCES S A
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/24249
Collection中国科学院紫金山天文台
Corresponding AuthorYan, Qing-Zeng
Affiliation1.Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
4.Curtin Univ, Int Ctr Radio Astron Res, GPO Box U1987, Perth, WA 6845, Australia
5.Macquarie Univ, Dept Phys & Astron, Sydney, NSW 2109, Australia
6.Macquarie Univ, MQ Res Ctr Astron Astrophys & Astrophoton, Sydney, NSW 2109, Australia
Recommended Citation
GB/T 7714
Yan, Qing-Zeng,Zhang, Bo,Xu, Ye,et al. Distances to molecular clouds at high galactic latitudes based on Gaia DR2[J]. ASTRONOMY & ASTROPHYSICS,2019,624:13.
APA Yan, Qing-Zeng.,Zhang, Bo.,Xu, Ye.,Guo, Sufen.,Macquart, Jean-Pierre.,...&Walsh, Andrew John.(2019).Distances to molecular clouds at high galactic latitudes based on Gaia DR2.ASTRONOMY & ASTROPHYSICS,624,13.
MLA Yan, Qing-Zeng,et al."Distances to molecular clouds at high galactic latitudes based on Gaia DR2".ASTRONOMY & ASTROPHYSICS 624(2019):13.
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