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Mira Variable Stars from LAMOST DR4 Data: Emission Features, Temperature Types, and Candidate Selection

文献类型：期刊论文

作者Liu, Chao4; Deng, Licai4; de Grijs, Richard1,2,5; Matsunaga, Noriyuki3; Yao, Yuhan1,2; Liu,Chao; Deng,Licai
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2017-09-01
卷号232期号:1
关键词Catalogs Stars: Agb And post-Agb Stars: Late-type Stars: Statistics Surveys
DOI10.3847/1538-4365/aa88a9
文献子类Article
英文摘要Based on an extensive spectral study of a photometrically confirmed sample of Mira variables, we find a relationship between the relative Balmer emission-line strengths and spectral temperatures of O-rich Mira stars. TheF(H delta)/F-H gamma flux ratio increases from less than unity to five as stars cool down from M0 to M10, which is likely driven by increasing TiO absorption above the deepest shock-emitting regions. We also discuss the relationship between the equivalent widths of the Balmer emission lines and the photometric luminosity phase of our Mira sample stars. Using our 291 Mira spectra as templates for reference, 191 Mira candidates are newly identified from the LAMOST DR4 catalog. We summarize the criteria adopted to select Mira candidates based on emission-line indices and molecular absorption bands. This enlarged spectral sample of Mira variables has the potential to contribute significantly to our knowledge of the optical properties of Mira stars and will facilitate further studies of these late-type, long-period variables.
WOS关键词SHOCK-INDUCED VARIABILITY ; SIO MASER SURVEY ; GALACTIC BULGE ; DATA RELEASE ; SPECTRAL CLASSIFICATION ; LINES ; WAVES ; GIANTS ; MODELS ; SYSTEM
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000411593900002
资助机构National Key Basic Research Program of China(2014CB845700) ; National Key Basic Research Program of China(2014CB845700) ; National Natured Science Foundation of China (NSFC)(11373032 ; National Natured Science Foundation of China (NSFC)(11373032 ; Hui-Chun Chin and Tsung-Dao Lee Chinese Undergraduate Research Endowment (CURE) ; Hui-Chun Chin and Tsung-Dao Lee Chinese Undergraduate Research Endowment (CURE) ; NSFC(U1631102 ; NSFC(U1631102 ; National Development and Reform Commission ; National Development and Reform Commission ; 11333003) ; 11333003) ; 11373010 ; 11373010 ; 11633005) ; 11633005) ; National Key Basic Research Program of China(2014CB845700) ; National Key Basic Research Program of China(2014CB845700) ; National Natured Science Foundation of China (NSFC)(11373032 ; National Natured Science Foundation of China (NSFC)(11373032 ; Hui-Chun Chin and Tsung-Dao Lee Chinese Undergraduate Research Endowment (CURE) ; Hui-Chun Chin and Tsung-Dao Lee Chinese Undergraduate Research Endowment (CURE) ; NSFC(U1631102 ; NSFC(U1631102 ; National Development and Reform Commission ; National Development and Reform Commission ; 11333003) ; 11333003) ; 11373010 ; 11373010 ; 11633005) ; 11633005)
源URL[http://ir.bao.ac.cn/handle/114a11/20116]  
专题国家天文台_光学天文研究部
作者单位1.Peking Univ, Kavli Inst Astron & Astrophys, Yi He Yuan Lu 5, Beijing 100871, Peoples R China
2.Peking Univ, Dept Astron, Yi He Yuan Lu 5, Beijing 100871, Peoples R China
3.Univ Tokyo, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan
4.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
5.Int Space Sci Inst Beijing, 1 Nanertiao, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Chao,Deng, Licai,de Grijs, Richard,et al. Mira Variable Stars from LAMOST DR4 Data: Emission Features, Temperature Types, and Candidate Selection[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2017,232(1).
APA Liu, Chao.,Deng, Licai.,de Grijs, Richard.,Matsunaga, Noriyuki.,Yao, Yuhan.,...&Deng,Licai.(2017).Mira Variable Stars from LAMOST DR4 Data: Emission Features, Temperature Types, and Candidate Selection.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,232(1).
MLA Liu, Chao,et al."Mira Variable Stars from LAMOST DR4 Data: Emission Features, Temperature Types, and Candidate Selection".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 232.1(2017).

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来源：国家天文台

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