中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 新疆天文台
  3. 研究单元未命名
  4. 光学天文与技术应用研究室
Identification of New Classical Be Stars from the LAMOST Medium Resolution Survey

文献类型：期刊论文

作者Wang, Luqian7; Li, Jiao6; Wu, You6; Gies, Douglas R.4,5; Liu, Jin Zhong2,3; Liu, Chao6; Guo, Yanjun2,7; Chen, Xuefei1,7; Han, Zhanwen1,7
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2022-06-01
卷号260期号:2页码:20
ISSN号0067-0049
DOI10.3847/1538-4365/ac617a
通讯作者Li, Jiao(lijiao@bao.ac.cn)
英文摘要Be stars are B-type main-sequence stars that display broad Balmer emission lines in their spectra. Identification of the Be population is essential to further examine the formation and evolutionary models. We report the detection of classical Be (CBe) stars from observations with the Large sky Area Multi-Object fiber Spectroscopic Telescope Medium Resolution Survey Data Release 7 (LAMOST MRS DR7). We used a deep convolutional neural network, ResNet, with an 18 layer module to examine the morphology of the H alpha profile. We identified 1162 candidate Be stars from the collection of 2,260,387 spectra for 789,918 stars in the database. The ResNet network achieves a Be-star classification accuracy of 99.5%. Among the detections, 151 of these are prior known Be stars crossmatched from the literature. By applying a three-step test, we identified 183 new CBe stars. We find that 41 CBe stars are members of known open clusters. Based on an investigation of the kinematics of the identified CBe stars from the Gaia EDR3 astrometric solutions, we identified 16 new runaways. These new identifications will provide a reference for future follow-ups to further investigate their physical properties.
WOS关键词HIGH-VELOCITY ; O-STAR ; CATALOG ; RUNAWAY ; EMISSION ; STELLAR ; SEARCH ; LINE ; KINEMATICS ; PARAMETERS
资助项目Chinese National Science Foundation[12090040] ; Chinese National Science Foundation[12090043] ; Chinese National Science Foundation[11733008] ; Chinese National Science Foundation[12103064] ; National Development and Reform Commission
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000812408600001
资助机构Chinese National Science Foundation ; National Development and Reform Commission
源URL[http://ir.xao.ac.cn/handle/45760611-7/4808]  
专题新疆天文台_光学天文与技术应用研究室
通讯作者Li, Jiao
作者单位1.Chinese Acad Sci, Ctr Astron Mega Sci, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Beijing, Peoples R China
4.Georgia State Univ, Dept Phys & Astron, POB 5060, Atlanta, GA 30302 USA
5.Georgia State Univ, Ctr High Angular Resolut Astron, POB 5060, Atlanta, GA 30302 USA
6.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100101, Peoples R China
7.Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Luqian,Li, Jiao,Wu, You,et al. Identification of New Classical Be Stars from the LAMOST Medium Resolution Survey[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2022,260(2):20.
APA Wang, Luqian.,Li, Jiao.,Wu, You.,Gies, Douglas R..,Liu, Jin Zhong.,...&Han, Zhanwen.(2022).Identification of New Classical Be Stars from the LAMOST Medium Resolution Survey.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,260(2),20.
MLA Wang, Luqian,et al."Identification of New Classical Be Stars from the LAMOST Medium Resolution Survey".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 260.2(2022):20.

入库方式： OAI收割

来源：新疆天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。