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Ground-based Parallax Confirmed by Spitzer: Binary Microlensing Event MOA-2015-BLG-020
Wang, Tianshu1,2; Zhu, Wei3; Mao, Shude1,2,4,5; Bond, I. A.6; Gould, A.3,7,8; Udalski, A.9; Sumi, T.10; Bozza, V.11,12; Ranc, C.13; Cassan, A.14; Yee, J. C.15; Han, C.16; Abe, F.16; Asakura, Y.16; Barry, R.13; Bennett, D. P.13,18; Bhattacharya, A.13,18; Donachie, M.19; Evans, P.19; Fukui, A.20; Hirao, Y.10; Itow, Y.17; Kawasaki, K.10; Koshimoto, N.10; Li, M. C. A.19; Ling, C. H.6; Masuda, K.17; Matsubara, Y.17; Miyazaki, S.10; Muraki, Y.17; Nagakane, M.10; Ohnishi, K.21; Rattenbury, N.19; Saito, To.22; Sharan, A.19; Shibai, H.23; Sullivan, D. J.24; Suzuki, D.13,25; Tristram, P. J.26; Yamada, T.27; Yonehara, A.27; Kozlowski, S.28; Mroz, P.28; Pawlak, M.28; Pietrukowicz, P.28; Poleski, R.3,28; Skowron, J.28; Soszynski, I.28; Szymanski, M. K.28; Ulaczyk, K.28; Beichman, C.29; Bryden, G.30; Novati, S. Calchi11,31; Carey, S.32; Fausnaugh, M.3; Gaudi, B. S.3; Henderson, C. B.30; Shvartzvald, Y.30; Wibking, B.3; Albrow, M. D.7,34; Chung, S. -J.35; Hwang, K. -H.15; Jung, Y. K.7; Ryu, Y. -H.15; Shin, I. -G.7,36; Cha, S. -M.7; Kim, D. -J.7; Kim, H. -W.7,34; Kim, S. -L.7,34; Lee, C. -U.7,34; Lee, Y.7,36; Park, B. -G.7,34; Pogge, R. W.3; Street, R. A.37; Tsapras, Y.38; Hundertmark, M.38; Bachelet, E.37,39; Dominik, M.40; Horne, K.40; Jaimes, R. Figuera40; Wambsganss, J.38; Bramich, D. M.; Schmidt, R.38; Snodgrass, C.41; Steele, I. A.42; Menzies, J.43; MOA Collaboration; OGLE Collaboration; Spitzer Team33; KMTNet Collaboration; RoboNet Collaboration
2017-08-20
Source PublicationASTROPHYSICAL JOURNAL
Volume845Issue:2
AbstractWe present the analysis of the binary gravitational microlensing event MOA-2015-BLG-020. The event has a fairly long timescale (similar to 63 days) and thus the light curve deviates significantly from the lensing model that is based on the rectilinear lens-source relative motion. This enables us to measure the microlensing parallax through the annual parallax effect. The microlensing parallax parameters constrained by the ground-based data are confirmed by the Spitzer observations through the satellite parallax method. By additionally measuring the angular Einstein radius from the analysis of the resolved caustic crossing, the physical parameters of the lens are determined. It is found that the binary lens is composed of two dwarf stars with masses M-1= 0.606 +/- 0.028M(circle dot) and M-2= 0.125 +/- 0.006 M-circle dot in the Galactic disk. Assuming that the source star is at the same distance as the bulge red clump stars, we find the lens is at a distance D-L = 2.44 +/- 0.10 kpc. We also provide a summary and short discussion of all of the published microlensing events in which the annual parallax effect is confirmed by other independent observations.
SubtypeArticle
KeywordBinaries: General Galaxy: Bulge Gravitational Lensing: Micro
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Natural Science Foundation of China (NSFC)(11333003 ; National Natural Science Foundation of China (NSFC)(11333003 ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; National Astronomical Observatories ; National Astronomical Observatories ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; US NSF(AST-1516842) ; US NSF(AST-1516842) ; JPL(1500811) ; JPL(1500811) ; NASA through the Sagan Fellowship Program ; NASA through the Sagan Fellowship Program ; National Science Centre, Poland(MAESTRO 2014/14/A/ST9/00121) ; National Science Centre, Poland(MAESTRO 2014/14/A/ST9/00121) ; National Research Foundation of Korea(2017R1A4A1015178) ; National Research Foundation of Korea(2017R1A4A1015178) ; JSPS KAKENHI(JSPS24253004 ; JSPS KAKENHI(JSPS24253004 ; 11390372) ; 11390372) ; JSPS26247023 ; JSPS26247023 ; JSPS23340064 ; JSPS23340064 ; JSPS15H00781 ; JSPS15H00781 ; JP16H06287) ; JP16H06287) ; National Natural Science Foundation of China (NSFC)(11333003 ; National Natural Science Foundation of China (NSFC)(11333003 ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; National Astronomical Observatories ; National Astronomical Observatories ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; US NSF(AST-1516842) ; US NSF(AST-1516842) ; JPL(1500811) ; JPL(1500811) ; NASA through the Sagan Fellowship Program ; NASA through the Sagan Fellowship Program ; National Science Centre, Poland(MAESTRO 2014/14/A/ST9/00121) ; National Science Centre, Poland(MAESTRO 2014/14/A/ST9/00121) ; National Research Foundation of Korea(2017R1A4A1015178) ; National Research Foundation of Korea(2017R1A4A1015178) ; JSPS KAKENHI(JSPS24253004 ; JSPS KAKENHI(JSPS24253004 ; 11390372) ; 11390372) ; JSPS26247023 ; JSPS26247023 ; JSPS23340064 ; JSPS23340064 ; JSPS15H00781 ; JSPS15H00781 ; JP16H06287) ; JP16H06287)
DOI10.3847/1538-4357/aa813b
WOS KeywordGRAVITATIONAL LENSING EXPERIMENT ; JUPITER/SATURN ANALOG ; PLANETARY SYSTEMS ; DISTANCES ; ALGORITHM ; NETWORK ; MASSES ; STARS
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China (NSFC)(11333003 ; National Natural Science Foundation of China (NSFC)(11333003 ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; National Astronomical Observatories ; National Astronomical Observatories ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; US NSF(AST-1516842) ; US NSF(AST-1516842) ; JPL(1500811) ; JPL(1500811) ; NASA through the Sagan Fellowship Program ; NASA through the Sagan Fellowship Program ; National Science Centre, Poland(MAESTRO 2014/14/A/ST9/00121) ; National Science Centre, Poland(MAESTRO 2014/14/A/ST9/00121) ; National Research Foundation of Korea(2017R1A4A1015178) ; National Research Foundation of Korea(2017R1A4A1015178) ; JSPS KAKENHI(JSPS24253004 ; JSPS KAKENHI(JSPS24253004 ; 11390372) ; 11390372) ; JSPS26247023 ; JSPS26247023 ; JSPS23340064 ; JSPS23340064 ; JSPS15H00781 ; JSPS15H00781 ; JP16H06287) ; JP16H06287) ; National Natural Science Foundation of China (NSFC)(11333003 ; National Natural Science Foundation of China (NSFC)(11333003 ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; National Astronomical Observatories ; National Astronomical Observatories ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; US NSF(AST-1516842) ; US NSF(AST-1516842) ; JPL(1500811) ; JPL(1500811) ; NASA through the Sagan Fellowship Program ; NASA through the Sagan Fellowship Program ; National Science Centre, Poland(MAESTRO 2014/14/A/ST9/00121) ; National Science Centre, Poland(MAESTRO 2014/14/A/ST9/00121) ; National Research Foundation of Korea(2017R1A4A1015178) ; National Research Foundation of Korea(2017R1A4A1015178) ; JSPS KAKENHI(JSPS24253004 ; JSPS KAKENHI(JSPS24253004 ; 11390372) ; 11390372) ; JSPS26247023 ; JSPS26247023 ; JSPS23340064 ; JSPS23340064 ; JSPS15H00781 ; JSPS15H00781 ; JP16H06287) ; JP16H06287)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000408111400015
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20129
Collection星系宇宙学研究部
Affiliation1.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
2.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China
3.Ohio State Univ, Dept Astron, 140 West 18th Ave, Columbus, OH 43210 USA
4.Chinese Acad Sci, Natl Astron Observatories, 20A Datun Rd, Beijing 100012, Peoples R China
5.Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Oxford Rd, Manchester M13 9PL, Lancs, England
6.Massey Univ, Inst Nat & Math Sci, Auckland 0745, New Zealand
7.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Yusung Gu 34055, Daejeon, South Korea
8.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
9.Univ Warsaw Observ, AI Ujazdowskie 4, PL-00478 Warsaw, Poland
10.Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan
11.Univ Salerno, Dipartimento Fis ER Caianiello, Via Giovanni Paolo II, I-84084 Fisciano, SA, Italy
12.Ist Int Alti Sci IIASS, Via G Pellegrino 19, I-84019 Vietri Sul Mare, SA, Italy
13.NASA, Goddard Space Flight Ctr, Code 667, Greenbelt, MD 20771 USA
14.Sorbonne Univ, UPMC, Univ Paris 06, CNRS,UMR 7095,Inst Astrophys Paris, 98 Bis Bd Arago, F-75014 Paris, France
15.Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA
16.Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea
17.Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi 4648601, Japan
18.Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
19.Univ Auckland, Dept Phys, Private Bag 92019, Auckland, New Zealand
20.Natl Astron Observ Japan, Okayama Astrophys Observ, 3037-5 Honjo, Asakuchi, Okayama 7190232, Japan
21.Nagano Natl Coll Technol, Nagano 3818550, Japan
22.Tokyo Metropolitan Coll Aeronaut, Tokyo 1168523, Japan
23.Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, 1-1 Machikaneyama, Toyonaka, Osaka 5600043, Japan
24.Victoria Univ, Sch Chem & Phys Sci, Wellington, New Zealand
25.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Kanagawa 2525210, Japan
26.Univ Canterbury Mt John Observ, POB 56, Lake Tekapo 8770, New Zealand
27.Kyoto Sangyo Univ, Fac Sci, Dept Phys, Kyoto 6038555, Japan
28.Univ Warsaw Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland
29.CALTECH, NASA Exoplanet Sci Inst, MS 100-22, Pasadena, CA 91125 USA
30.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
31.CALTECH, IPAC, Mail Code 100 22,1200 East Calif Blvd, Pasadena, CA 91125 USA
32.CALTECH, Spitzer Sci Ctr, MS 220-6, Pasadena, CA 91125 USA
33.Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch 8020, New Zealand
34.Korea Univ Sci & Technol, 217 Gajeong Ro, Yusung Gu 34113, Daejeon, South Korea
35.Chungbuk Natl Univ, Inst Astrophys, Dept Phys, Cheongju 371763, South Korea
36.Kyung Hee Univ, Sch Space Res, Yongin, Gyeonggi Do, South Korea
37.Las Cumbres Observ, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA
38.Zentrum Astron Univ Heidelberg, Astronom Rechen Inst, Monchhofstr 12-14, D-69120 Heidelberg, Germany
39.Qatar Fdn, HBKU, QEERI, Doha, Qatar
40.Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland
41.Open Univ, Dept Phys Sci, Planetary & Space Sci, Milton Keynes MK7 6AA, Bucks, England
42.Liverpool John Moores Univ, Astrophys Res Inst, Liverpool CH41 1LD, Merseyside, England
43.South African Astron Observ, POB 9, Observatory 7935, South Africa
Recommended Citation
GB/T 7714
Wang, Tianshu,Zhu, Wei,Mao, Shude,et al. Ground-based Parallax Confirmed by Spitzer: Binary Microlensing Event MOA-2015-BLG-020[J]. ASTROPHYSICAL JOURNAL,2017,845(2).
APA Wang, Tianshu.,Zhu, Wei.,Mao, Shude.,Bond, I. A..,Gould, A..,...&RoboNet Collaboration.(2017).Ground-based Parallax Confirmed by Spitzer: Binary Microlensing Event MOA-2015-BLG-020.ASTROPHYSICAL JOURNAL,845(2).
MLA Wang, Tianshu,et al."Ground-based Parallax Confirmed by Spitzer: Binary Microlensing Event MOA-2015-BLG-020".ASTROPHYSICAL JOURNAL 845.2(2017).
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