The Galactic spiral structure as revealed by O- and early B-type stars

doi:10.1093/mnras/stz1357

CORC > 国家天文台 > 中国科学院国家天文台

	The Galactic spiral structure as revealed by O- and early B-type stars
	Chen, B. -Q.1; Huang, Y.1; Hou, L. -G.2; Tian, H.3; Li, G. -X.1; Yuan, H. -B.4; Wang, H. -F.1,5; Wang, C.6; Tian, Z. -J.7; Liu, X. -W.1
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2019-07-01
卷号	487 期号:1 页码:1400-1409
关键词	stars: early-type Galaxy: disc Galaxy: structure
ISSN号	0035-8711
DOI	10.1093/mnras/stz1357
英文摘要	We investigate the morphology and kinematics of the Galactic spiral structure based on a new sample of O- and early B-type stars. We select 6858 highly confident OB star candidates from the combined data of the VST Photometric H alpha Survey Data Release 2 (VPHAS+ DR2) and the Gaia Data Release 2 (Gaia DR2). Together with the O-B2 stars from the literature, we build a sample consisting of 14 880 O- and early B-type stars, all with Gaia parallax uncertainties smaller than 20 per cent. The new sample, hitherto the largest one of O- and early B-type stars with robust distance and proper motion estimates, covers the Galactic plane of distances up to 6 kpc from the Sun. The sample allows us to examine the morphology of the Scutum, Sagittarius, Local, and Perseus Arms in great detail. The spiral structure of the Milky Way as traced by O- and early B-type stars shows flocculent patterns. Accurate structure parameters, as well as the means and dispersions of the vertical velocity distributions of the individual spiral arms are presented.
资助项目	National Natural Science Foundation of China[11803029] ; National Natural Science Foundation of China[U1531244] ; National Natural Science Foundation of China[11833006] ; National Natural Science Foundation of China[U1731308] ; Yunnan University[C176220100007] ; National Key R&D Program of China[2017YFA0402701] ; Youth Innovation Promotion Association CAS ; NSFC[11603002] ; Beijing Normal University[310232102] ; National Development and Reform Commission ; ESO Telescopes at the La Silla Paranal Observatory[177.D-3023]
WOS关键词	H-ALPHA SURVEY ; ARM ; QUADRANT ; REGIONS ; CARINA
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000474907100105
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Yunnan University ; Yunnan University ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; NSFC ; NSFC ; Beijing Normal University ; Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Yunnan University ; Yunnan University ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; NSFC ; NSFC ; Beijing Normal University ; Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Yunnan University ; Yunnan University ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; NSFC ; NSFC ; Beijing Normal University ; Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Yunnan University ; Yunnan University ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; NSFC ; NSFC ; Beijing Normal University ; Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/26957]
专题	中国科学院国家天文台
通讯作者	Chen, B. -Q.; Liu, X. -W.
作者单位	1.Yunnan Univ, South Western Inst Astron Res, Kunming 650091, Yunnan, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 4.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 5.China West Normal Univ, Dept Astron, Nanchong 637009, Peoples R China 6.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 7.Yunnan Univ, Dept Astron, Kunming 650091, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Chen, B. -Q.,Huang, Y.,Hou, L. -G.,et al. The Galactic spiral structure as revealed by O- and early B-type stars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,487(1):1400-1409.
APA	Chen, B. -Q..,Huang, Y..,Hou, L. -G..,Tian, H..,Li, G. -X..,...&Liu, X. -W..(2019).The Galactic spiral structure as revealed by O- and early B-type stars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,487(1),1400-1409.
MLA	Chen, B. -Q.,et al."The Galactic spiral structure as revealed by O- and early B-type stars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 487.1(2019):1400-1409.