A Catalog of Early-type Runaway Stars from LAMOST DR8

doi:10.3847/1538-4365/ad46f8

	A Catalog of Early-type Runaway Stars from LAMOST DR8
	Guo YJ(郭彦君)2,3,4; Wang LQ(王璐茜)4; Liu, Chao 1; Wu, You 1; Han ZW(韩占文)2,4; Chen XF(陈雪飞)2,4
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2024-06-01
卷号	272 期号:2
ISSN号	0067-0049
DOI	10.3847/1538-4365/ad46f8
产权排序	第1完成单位
文献子类	Article
英文摘要	Runaway stars are OB-type stars ejected from their birthplace with large peculiar velocities. The leading hypothesis addressed in their formation includes the supernova ejection mechanism and the dynamic ejection scenario. Identification of runaway populations is the first step to investigating their formation and evolution. Here we present our work of searching for Galactic runaway candidate stars from the Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) Medium Resolution Survey Data Release 8 (DR8) database. After studying the kinematic properties for a collection of 4432 early-type stars, predominantly B-type stars, using radial velocity measurements from LAMOST DR8 and astrometric solutions made by Gaia Data Release 3, we identified 229 runaway candidate stars. They span a wide distribution in projected rotational velocities. We investigated the Galactic spatial distribution of the runaway population and noticed that most of them likely reside within the Galactic thin disk. Based upon analyzing the Doppler shifts of the candidate stars, we found two binary runaway candidates displaying velocity variations with estimated orbital periods of 40 and 61 days.
学科主题	天文学 ; 恒星与银河系
URL标识	查看原文
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
资助项目	Natural Science Foundation of China[12125303]; Natural Science Foundation of China[12288102]; Natural Science Foundation of China[12090040/3]; Natural Science Foundation of China[12103064]; National Key R&D Program of China[2021YFA1600403]; National Key R&D Program of China[2021YFA1600400]; China Manned Space Project[CMS-CSST-2021-A10]; China Manned Space Project[CMS-CSST-2021-A08]; NSFC[12103085]; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB350003]; Key Research Program of Frontier Sciences, CAS[. QYZDY-SSW-SLH007]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; Natural Science Foundation of Yunnan Province[202201BC070003]; National Development and Reform Commission
WOS关键词	BINARY EVOLUTION ; 3D KINEMATICS ; WHITE-DWARFS ; MILKY-WAY ; OB STARS ; GAIA DR2 ; ORIGIN ; HIPPARCOS ; VELOCITIES ; FREQUENCY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:001248980500001
资助机构	Natural Science Foundation of China[12125303, 12288102, 12090040/3, 12103064] ; National Key R&D Program of China[2021YFA1600403, 2021YFA1600400] ; China Manned Space Project[CMS-CSST-2021-A10, CMS-CSST-2021-A08] ; NSFC[12103085] ; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB350003] ; Key Research Program of Frontier Sciences, CAS[. QYZDY-SSW-SLH007] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; Natural Science Foundation of Yunnan Province[202201BC070003] ; National Development and Reform Commission
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/27418]
专题	云南天文台_大样本恒星演化研究组
作者单位	1.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China; 3.Max-Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany; 4.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming 650216, Yunnan, People's Republic of China; wangluqian@hotmail.com, cxf@ynao.ac.cn;
推荐引用方式 GB/T 7714	Guo YJ,Wang LQ,Liu, Chao,et al. A Catalog of Early-type Runaway Stars from LAMOST DR8[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2024,272(2).
APA	郭彦君,王璐茜,Liu, Chao,Wu, You,韩占文,&陈雪飞.(2024).A Catalog of Early-type Runaway Stars from LAMOST DR8.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,272(2).
MLA	郭彦君,et al."A Catalog of Early-type Runaway Stars from LAMOST DR8".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 272.2(2024).