Institutional Repository of Optical Astronomy Research Laboratory
| Identification of New Classical Be Stars from the LAMOST Medium Resolution Survey | |
Wang, Luqian1; Li, Jiao2; Wu, You2; Gies, Douglas R.3,4; Liu, Jin Zhong5,6 ; Liu, Chao2; Guo, Yanjun1,6; Chen, Xuefei1,7; Han, Zhanwen1,7
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| 2022-06-01 | |
| Source Publication | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
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| ISSN | 0067-0049 |
| Volume | 260Issue:2Pages:35 |
| Contribution Rank | 4 |
| Abstract | 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. |
| DOI | 10.3847/1538-4365/ac617a |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | HIGH-VELOCITY ; O-STAR ; CATALOG ; RUNAWAY ; EMISSION ; STELLAR ; SEARCH ; LINE ; KINEMATICS ; PARAMETERS |
| Funding Project | 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 Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000812408600001 |
| Publisher | IOP Publishing Ltd |
| Funding Organization | Chinese National Science Foundation ; National Development and Reform Commission |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4809 |
| Collection | 光学天文与技术应用研究室 |
| Corresponding Author | Li, Jiao |
| Affiliation | 1.Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100101, Peoples R China 3.Georgia State Univ, Ctr High Angular Resolut Astron, POB 5060, Atlanta, GA 30302 USA 4.Georgia State Univ, Dept Phys & Astron, POB 5060, Atlanta, GA 30302 USA 5.Chinese Acad Sci, Xinjiang Astron Observ, Beijing, Peoples R China 6.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 7.Chinese Acad Sci, Ctr Astron Mega Sci, Beijing 100012, Peoples R China |
| Recommended Citation 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):35. |
| 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),35. |
| MLA | Wang, Luqian,et al."Identification of New Classical Be Stars from the LAMOST Medium Resolution Survey".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 260.2(2022):35. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Wang-2022-Identifica（2205KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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