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The White Dwarf Binary Pathways Survey. V. The Gaia White Dwarf Plus AFGK Binary Sample and the Identification of 23 Close Binaries

文献类型:期刊论文

作者Ren, J.-J.1; Raddi, R.2; Rebassa-Mansergas, A.2,3; Hernandez, M. S.4; Parsons, S. G.5; Irawati, P.6; Rittipruk, P.6; Schreiber, M. R.7,8; G?nsicke, B. T.9,10; Torres, S.2,3
刊名The Astrophysical Journal
出版日期2020-12-01
卷号905期号:1
ISSN号0004-637X
关键词Close binary stars White dwarf stars
DOI10.3847/1538-4357/abc017
产权排序第15完成单位
文献子类Article
英文摘要

Close white dwarf binaries consisting of a white dwarf and an A-, F-, G-, or K-type main-sequence star, henceforth close WD+AFGK binaries, are ideal systems to understand the nature of type Ia supernovae progenitors and to test binary evolution models. In this work we identify 775 WD+AFGK candidates from TGAS (The Tycho-Gaia Astrometric Solution) and Gaia Data Release 2 (DR2), a well-defined sample of stars with available parallaxes, and we measure radial velocities (RVs) for 275 of them with the aim of identifying close binaries. The RVs have been measured from high-resolution spectra obtained at the Xinglong 2.16 m Telescope and the San Pedro Mártir 2.12 m Telescope and/or from available LAMOST DR6 (low-resolution) and RAVE DR5 (medium-resolution) spectra. We identify 23 WD+AFGK systems displaying more than 3σ RV variation among 151 systems for which the measured values are obtained from different nights. Our WD+AFGK binary sample contains both AFGK dwarfs and giants, with a giant fraction ~43%. The close binary fractions we determine for the WD+AFGK dwarf and giant samples are ?24% and ?15%, respectively. We also determine the stellar parameters (i.e., effective temperature, surface gravity, metallicity, mass, and radius) of the AFGK companions with available high-resolution spectra. The stellar parameter distributions of the AFGK companions that are members of close and wide binary candidates do not show statistically significant differences.

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
WOS关键词MAIN-SEQUENCE BINARIES ; IA SUPERNOVAE ; FGK STARS ; PROGENITORS ; EVOLUTION ; LAMOST ; SDSS ; POPULATION ; PARAMETERS ; DATABASE
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000597110100001
源URL[http://ir.ynao.ac.cn/handle/114a53/23997]  
专题云南天文台_大样本恒星演化研究组
云南天文台_中国科学院天体结构与演化重点实验室
通讯作者Ren, J.-J.
作者单位1.CAS Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
2.Departament de Física, Universitat Politècnica de Catalunya, c/Esteve Terrades 5, E-08860 Castelldefels, Spain
3.Institute for Space Studies of Catalonia, c/Gran Capità 2–4, Edif. Nexus 201, E-08034 Barcelona, Spain
4.Instituto de Física y Astronomía, Universidad de Valparaíso, Avenida Gran Breta?a 1111, Valparaíso, Chile
5.Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK
6.National Astronomical Research Institute of Thailand, Sirindhorn AstroPark, Donkaew, Mae Rim, Chiang Mai 50180, Thailand
7.Departamento de Física, Universidad Técnica Federico Santa María, Av. Espa?a 1680, Valparaíso, Chile
8.Millennium Nucleus for Planet formation, NPF, Valparaíso, Chile
9.Department of Physics, University of Warwick, Coventry CV4 7AL, UK
10.Centre for Exoplanets and Habitability, University of Warwick, Coventry CV4 7AL, UK
推荐引用方式
GB/T 7714
Ren, J.-J.,Raddi, R.,Rebassa-Mansergas, A.,et al. The White Dwarf Binary Pathways Survey. V. The Gaia White Dwarf Plus AFGK Binary Sample and the Identification of 23 Close Binaries[J]. The Astrophysical Journal,2020,905(1).
APA Ren, J.-J..,Raddi, R..,Rebassa-Mansergas, A..,Hernandez, M. S..,Parsons, S. G..,...&Tian, H..(2020).The White Dwarf Binary Pathways Survey. V. The Gaia White Dwarf Plus AFGK Binary Sample and the Identification of 23 Close Binaries.The Astrophysical Journal,905(1).
MLA Ren, J.-J.,et al."The White Dwarf Binary Pathways Survey. V. The Gaia White Dwarf Plus AFGK Binary Sample and the Identification of 23 Close Binaries".The Astrophysical Journal 905.1(2020).

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