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The Near-infrared Optimal Distances Method Applied to Galactic Classical Cepheids Tightly Constrains Mid-infrared Period-Luminosity Relations
Wang, Shu1; Chen, Xiaodian2; de Grijs, Richard1,3,4; Deng, Licai2
2018-01-10
Source PublicationASTROPHYSICAL JOURNAL
Volume852Issue:2
AbstractClassical Cepheids are well-known and widely used distance indicators. As distance and extinction are usually degenerate, it is important to develop suitable methods to robustly anchor the distance scale. Here, we introduce a near-infrared optimal distance method to determine both the extinction values of and distances to a large sample of 288 Galactic classical Cepheids. The overall uncertainty in the derived distances is less than 4.9%. We compare our newly determined distances to the Cepheids in our sample with previously published distances to the same Cepheids with Hubble Space Telescope parallax measurements and distances based on the IR surface brightness method, Wesenheit functions, and the main-sequence fitting method. The systematic deviations in the distances determined here with respect to those of previous publications is less than 1%-2%. Hence, we constructed Galactic mid-IR period-luminosity (PL) relations for classical Cepheids in the four Wide-Field Infrared Survey Explorer (WISE) bands (W1, W2, W3, and W4) and the four Spitzer Space Telescope bands ([3.6], [4.5], [5.8], and [8.0]). Based on our sample of hundreds of Cepheids, the WISE PL relations have been determined for the first time; their dispersion is approximately 0.10 mag. Using the currently most complete sample, our Spitzer PL relations represent a significant improvement in accuracy, especially in the [3.6] band which has the smallest dispersion (0.066 mag). In addition, the average mid-IR extinction curve for Cepheids has been obtained: A(W1)/A(Ks) approximate to 0.560, A(W2)/A(Ks) approximate to 0.479, A(W3)/A(Ks) approximate to 0.507, A(W4)/A(Ks) approximate to 0.406, A([3.6]) A(Ks) approximate to 0.481, A([4.5])/A(Ks) approximate to 0.469, A([5.8])/A(Ks) approximate to 0.427, and A([8.0])/A(Ks) approximate to 0.427 mag
SubtypeArticle
KeywordDistance Scale Infrared: Ism Dust Stars: Variables: Cepheids Extinction
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationInitiative Postdocs Support Program(BX201600002) ; Initiative Postdocs Support Program(BX201600002) ; China Postdoctoral Science Foundation(2017M610998) ; China Postdoctoral Science Foundation(2017M610998) ; KIAA ; KIAA ; National Natural Science Foundation of China(U1631102 ; National Natural Science Foundation of China(U1631102 ; 11373010 ; 11373010 ; 11633005) ; 11633005) ; Initiative Postdocs Support Program(BX201600002) ; Initiative Postdocs Support Program(BX201600002) ; China Postdoctoral Science Foundation(2017M610998) ; China Postdoctoral Science Foundation(2017M610998) ; KIAA ; KIAA ; National Natural Science Foundation of China(U1631102 ; National Natural Science Foundation of China(U1631102 ; 11373010 ; 11373010 ; 11633005) ; 11633005)
DOI10.3847/1538-4357/aa9d99
WOS KeywordINTERSTELLAR EXTINCTION LAW ; LARGE-MAGELLANIC-CLOUD ; BAADE-WESSELINK DISTANCES ; K-S BANDS ; 8.0 MU-M ; MILKY-WAY ; ARCHIVAL DATA ; SCALE ; CALIBRATION ; PARALLAXES
Indexed BySCI
Language英语
Funding OrganizationInitiative Postdocs Support Program(BX201600002) ; Initiative Postdocs Support Program(BX201600002) ; China Postdoctoral Science Foundation(2017M610998) ; China Postdoctoral Science Foundation(2017M610998) ; KIAA ; KIAA ; National Natural Science Foundation of China(U1631102 ; National Natural Science Foundation of China(U1631102 ; 11373010 ; 11373010 ; 11633005) ; 11633005) ; Initiative Postdocs Support Program(BX201600002) ; Initiative Postdocs Support Program(BX201600002) ; China Postdoctoral Science Foundation(2017M610998) ; China Postdoctoral Science Foundation(2017M610998) ; KIAA ; KIAA ; National Natural Science Foundation of China(U1631102 ; National Natural Science Foundation of China(U1631102 ; 11373010 ; 11373010 ; 11633005) ; 11633005)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000419796100005
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20327
Collection光学天文研究部
Affiliation1.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
3.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
4.Int Space Sci Inst Beijing, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Shu,Chen, Xiaodian,de Grijs, Richard,et al. The Near-infrared Optimal Distances Method Applied to Galactic Classical Cepheids Tightly Constrains Mid-infrared Period-Luminosity Relations[J]. ASTROPHYSICAL JOURNAL,2018,852(2).
APA Wang, Shu,Chen, Xiaodian,de Grijs, Richard,&Deng, Licai.(2018).The Near-infrared Optimal Distances Method Applied to Galactic Classical Cepheids Tightly Constrains Mid-infrared Period-Luminosity Relations.ASTROPHYSICAL JOURNAL,852(2).
MLA Wang, Shu,et al."The Near-infrared Optimal Distances Method Applied to Galactic Classical Cepheids Tightly Constrains Mid-infrared Period-Luminosity Relations".ASTROPHYSICAL JOURNAL 852.2(2018).
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