Optical–Mid-infrared Period–Luminosity Relations for W UMa-type Contact Binaries Based on Gaia DR 1: 8% Distance Accuracy

doi:10.3847/1538-4357/aabe83

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	Optical–Mid-infrared Period–Luminosity Relations for W UMa-type Contact Binaries Based on Gaia DR 1: 8% Distance Accuracy
	Chen,Xiaodian 5; Deng,Licai 5; Grijs,Richard de 1,2,3; Wang,Shu 2; Feng,Yuting 4
刊名	The Astrophysical Journal
	2018-06-01
卷号	859 期号:2
关键词	binaries: eclipsing distance scale stars: distances
ISSN号	0004-637X
DOI	10.3847/1538-4357/aabe83
英文摘要	Abstract W Ursa Majoris (W UMa)-type contact binary systems (CBs) are useful statistical distance indicators because of their large numbers. Here, we establish (orbital) period–luminosity relations (PLRs) in 12 optical to mid-infrared bands (GBVRIJHKsW1W2W3W4) based on 183 nearby W UMa-type CBs with accurate Tycho–Gaia parallaxes. The 1σ dispersion of the PLRs decreases from optical to near- and mid-infrared wavelengths. The minimum scatter, 0.16 mag, implies that W UMa-type CBs can be used to recover distances to 7% precision. Applying our newly determined PLRs to 19 open clusters containing W UMa-type CBs demonstrates that the PLR and open cluster CB distance scales are mutually consistent to within 1%. Adopting our PLRs as secondary distance indicators, we compiled a catalog of 55,603 CB candidates, of which 80% have distance estimates based on a combination of optical, near-infrared, and mid-infrared photometry. Using Fourier decomposition, 27,318 high-probability W UMa-type CBs were selected. The resulting 8% distance accuracy implies that our sample encompasses the largest number of objects with accurate distances within a local volume with a radius of 3 kpc available to date. The distribution of W UMa-type CBs in the Galaxy suggests that in different environments, the CB luminosity function may be different: larger numbers of brighter (longer-period) W UMa-type CBs are found in younger environments.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-859-2-AABE83
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/35516]
专题	中国科学院国家天文台
作者单位	1.Department of Physics and Astronomy, Macquarie University, Balaclava Road, North Ryde NSW 2109, Australia 2.Kavli Institute for Astronomy & Astrophysics, Peking University, Yi He Yuan Lu 5, Hai Dian District, Beijing 100871, People's Republic of China 3.International Space Science Institute–Beijing, 1 Nanertiao, Zhongguancun, Hai Dian District, Beijing 100190, People's Republic of China 4.Department of Astronomy, Peking University, Yi He Yuan Lu 5, Hai Dian District, Beijing 100871, People's Republic of China 5.Key Laboratory for Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China; chenxiaodian@nao.cas.cn
推荐引用方式 GB/T 7714	Chen,Xiaodian,Deng,Licai,Grijs,Richard de,et al. Optical–Mid-infrared Period–Luminosity Relations for W UMa-type Contact Binaries Based on Gaia DR 1: 8% Distance Accuracy[J]. The Astrophysical Journal,2018,859(2).
APA	Chen,Xiaodian,Deng,Licai,Grijs,Richard de,Wang,Shu,&Feng,Yuting.(2018).Optical–Mid-infrared Period–Luminosity Relations for W UMa-type Contact Binaries Based on Gaia DR 1: 8% Distance Accuracy.The Astrophysical Journal,859(2).
MLA	Chen,Xiaodian,et al."Optical–Mid-infrared Period–Luminosity Relations for W UMa-type Contact Binaries Based on Gaia DR 1: 8% Distance Accuracy".The Astrophysical Journal 859.2(2018).