NAOC Open IR
Spitzer plus VLTI-GRAVITY Measure the Lens Mass of a Nearby Microlensing Event
Zang, Weicheng1,2; Dong, Subo3; Gould, Andrew4,5; Novati, Sebastiano Calchi6; Chen, Ping3,7; Yang, Hongjing1,2; Li, Shun-Sheng8,9; Mao, Shude1,2,8; Alton, K. B.10; Brimacombe, J.11; Carey, Sean12; Christie, G. W.13; Delplancke-Stroebele, F.14; Feliz, Dax L.15; Gaudi, B. Scott5; Green, J.16; Hu, Shaoming17; Jayasinghe, T.5,18; Koff, R. A.19; Kurtenkov, A.20,21; Merand, A.14; Minev, Milen22; Mutel, Robert23; Natusch, T.24; Roth, Tyler23; Shvartzvald, Yossi25; Sun, Fengwu26; Vanmunster, T.27; Zhu, Wei28
2020-07-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume897Issue:2Pages:12
AbstractWe report the lens mass and distance measurements of the nearby microlensing event TCP J05074264+2447555 (Kojima-1). We measure the microlens parallax vector pi(E) using Spitzer and ground-based light curves with constraints on the direction of lens-source relative proper motion derived from Very Large Telescope Interferometer (VLTI) GRAVITY observations. Combining this pi(E) determination with the angular Einstein radius theta(E) measured by VLTI-GRAVITY observations, we find that the lens is a star with mass M-L = 0.495 +/- 0.063 M-circle dot at a distance D-L = 429 +/- 21 pc. We find that the blended light basically all comes from the lens. The lens-source proper motion is mu(rel, hel) = 26.55 +/- 0.36 mas yr(-1), so with currently available adaptive-optics instruments, the lens and source can be resolved in 2021. This is the first microlensing event whose lens mass is unambiguously measured by interferometry + satellite-parallax observations, which opens a new window for mass measurements of isolated objects such as stellar-mass black holes.
KeywordGravitational microlensing Satellite microlensing parallax Stellar masses Stellar distance
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China ; National Science Foundation of China ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; NASA ; NASA ; Natural Science Foundation of Shandong province ; Natural Science Foundation of Shandong province ; Young Scholars Program of Shandong University ; Young Scholars Program of Shandong University ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China ; National Science Foundation of China ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; NASA ; NASA ; Natural Science Foundation of Shandong province ; Natural Science Foundation of Shandong province ; Young Scholars Program of Shandong University ; Young Scholars Program of Shandong University ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China ; National Science Foundation of China ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; NASA ; NASA ; Natural Science Foundation of Shandong province ; Natural Science Foundation of Shandong province ; Young Scholars Program of Shandong University ; Young Scholars Program of Shandong University ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China ; National Science Foundation of China ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; NASA ; NASA ; Natural Science Foundation of Shandong province ; Natural Science Foundation of Shandong province ; Young Scholars Program of Shandong University ; Young Scholars Program of Shandong University ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; NASA through JPL/Caltech ; NASA through JPL/Caltech
DOI10.3847/1538-4357/ab9749
WOS KeywordSTARS ; SEARCH ; LIMITS
Language英语
Funding ProjectNational Key R&D Program of China[2019YFA0405100] ; National Science Foundation of China (NSFC)[11573003] ; National Science Foundation of China[11821303] ; National Science Foundation of China[11761131004] ; JPL grant[1500811] ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC[321035] ; NASA ; Natural Science Foundation of Shandong province[JQ201702] ; Young Scholars Program of Shandong University[20820162003] ; Beatrice and Vincent Tremaine Fellowship at CITA ; NASA through JPL/Caltech ; [AST-1516842]
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China ; National Science Foundation of China ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; NASA ; NASA ; Natural Science Foundation of Shandong province ; Natural Science Foundation of Shandong province ; Young Scholars Program of Shandong University ; Young Scholars Program of Shandong University ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China ; National Science Foundation of China ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; NASA ; NASA ; Natural Science Foundation of Shandong province ; Natural Science Foundation of Shandong province ; Young Scholars Program of Shandong University ; Young Scholars Program of Shandong University ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China ; National Science Foundation of China ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; NASA ; NASA ; Natural Science Foundation of Shandong province ; Natural Science Foundation of Shandong province ; Young Scholars Program of Shandong University ; Young Scholars Program of Shandong University ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China ; National Science Foundation of China ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; NASA ; NASA ; Natural Science Foundation of Shandong province ; Natural Science Foundation of Shandong province ; Young Scholars Program of Shandong University ; Young Scholars Program of Shandong University ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; NASA through JPL/Caltech ; NASA through JPL/Caltech
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000553812300001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82522
Collection中国科学院国家天文台
Corresponding AuthorZang, Weicheng
Affiliation1.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
2.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China
3.Peking Univ, Kavli Inst Astron & Astrophys, Yi He Yuan Rd 5, Beijing 100871, Peoples R China
4.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
5.Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA
6.CALTECH, IPAC, Mail Code 100-22,1200 E Calif Blvd, Pasadena, CA 91125 USA
7.Peking Univ, Sch Phys, Dept Astron, Yi He Yuan Rd 5, Beijing 100871, Peoples R China
8.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
9.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
10.Desert Blooms Observ, Santiago, Chile
11.Coral Towers Observ, Cairns, Qld 4870, Australia
12.CALTECH, Spitzer Sci Ctr, MS 220-6, Pasadena, CA 91125 USA
13.Auckland Observ, Box 24180, Auckland, New Zealand
14.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
15.Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
16.Kumeu Observ, Kumeu, New Zealand
17.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China
18.Ohio State Univ, Ctr Cosmol & AstroParticle Phys CCAPP, 191 W Woodruff Ave, Columbus, OH 43210 USA
19.Antelope Hills Observ, 980 Antelope Dr West, Bennett, CO 80102 USA
20.Bulgarian Acad Sci, Inst Astron, 72 Tsarigradsko Shose Blvd, Sofia 1784, Bulgaria
21.Bulgarian Acad Sci, Natl Astron Observ, 72 Tsarigradsko Shose Blvd, Sofia 1784, Bulgaria
22.Univ Sofia, Fac Phys, Dept Astron, Sofia 1164, Bulgaria
23.Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA
24.AUT Univ, Inst Radio Astron & Space Res, Auckland, New Zealand
25.Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel
26.Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA
27.Ctr Backyard Astrophys Belgium, Walhostr 1A, B-3401 Landen, Belgium
28.Univ Toronto, Canadian Inst Theoret Astrophys, 60 St George St, Toronto, ON M5S 3H8, Canada
Recommended Citation
GB/T 7714
Zang, Weicheng,Dong, Subo,Gould, Andrew,et al. Spitzer plus VLTI-GRAVITY Measure the Lens Mass of a Nearby Microlensing Event[J]. ASTROPHYSICAL JOURNAL,2020,897(2):12.
APA Zang, Weicheng.,Dong, Subo.,Gould, Andrew.,Novati, Sebastiano Calchi.,Chen, Ping.,...&Zhu, Wei.(2020).Spitzer plus VLTI-GRAVITY Measure the Lens Mass of a Nearby Microlensing Event.ASTROPHYSICAL JOURNAL,897(2),12.
MLA Zang, Weicheng,et al."Spitzer plus VLTI-GRAVITY Measure the Lens Mass of a Nearby Microlensing Event".ASTROPHYSICAL JOURNAL 897.2(2020):12.
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