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Distances to molecular clouds at high galactic latitudes based on Gaia DR2

文献类型:期刊论文

AuthorYan, Qing-Zeng1,2; Zhang, Bo2; Xu, Ye1; Guo, Sufen2,3; Macquart, Jean-Pierre4; Tang, Zheng-Hong2,3; Walsh, Andrew John5,6
SourceASTRONOMY & ASTROPHYSICS
Issued Date2019-03-29
Volume624Pages:13
ISSN1432-0746
Keyworddust, extinction ISM: clouds
DOI10.1051/0004-6361/201834337
Corresponding AuthorYan, Qing-Zeng(qzyan@pmo.ac.cn)
English 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.
WOS KeywordCEPHEUS FLARE ; GAS ; CATALOG ; DUST
WOS Research AreaAstronomy & Astrophysics
Language英语
WOS IDWOS:000462844500005
PublisherEDP SCIENCES S A
源URL[http://libir.pmo.ac.cn/handle/332002/24248]  
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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来源:紫金山天文台

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