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MASS MEASUREMENTS OF ISOLATED OBJECTS FROM SPACE-BASED MICROLENSING
Zhu, Wei1; Novati, S. Calchi2,3,4,42; Gould, A.1; Udalski, A.5; Han, C.6; Shvartzvald, Y.7,8; Ranc, C.9; Jørgensen, U. G.10; Poleski, R.1,5; Bozza, V.3,11; Beichman, C.2; Bryden, G.7; Carey, S.2; Gaudi, B. S.1; Henderson, C. B.1,7,43; Pogge, R. W.1; Porritt, I.12; Wibking, B.1; Yee, J. C.13,44; Pawlak, M.5; Szymański, M. K.5; Skowron, J.5; Mróz, P.5; Kozłowski, S.5; Wyrzykowski, Ł.5; Pietrukowicz, P.5; Pietrzyński, G.5; Soszyński ,I.5; Ulaczyk, K.14; Choi, J.-Y.6; Park, H.6; Jung, Y. K.6; Shin, I.-G.6; Albrow, M. D.15; Park, B.-G.16; Kim, S.-L.16; Lee, C.-U.16; Cha, S.-M.16,17; Kim, D.-J.16,17; Lee, Y.16,17; Friedmann, M.8; Kaspi, S.8; Maoz, D.8; Hundertmark, M.10; Street, R. A.18; Tsapras, Y.19; Bramich, D. M.20; Cassan, A.9; Dominik, M.21,45; Bachelet, E.18,20; Dong,Subo22; Jaimes, R. Figuera21,23; Horne, K.21; Mao, S.24; Menzies, J.25; Schmidt, R.19; Snodgrass, C.26; Steele, I. A.27; Wambsganss, J.19; Skottfelt, J.10,28; Andersen, M. I.29; Burgdorf,M. J.30; Ciceri, S.31; D'Ago, G.4; Evans, D. F.32; Gu SH(顾盛宏)33; Hinse, T. C.16; Kerins, E.34; Korhonen, H.10,35; Kuffmeier, M.10; Mancini, L.31; Peixinho, N.36,37; Popovas, A.10; Rabus, M.38; Rahvar, S.39; Tronsgaard, R.40; Scarpetta, G.3,11; Southworth, J.32; Surdej, J.41; Essen, C. von40; Wang YB(王夷博)33; Wertz, O.41
Source PublicationThe Astrophysical Journal
2016-06-27
Volume825Issue:1
DOI10.3847/0004-637X/825/1/60
Contribution Rank第33完成单位
Indexed BySCI
KeywordBrown Dwarfs Gravitational Lensing: Micro Stars: Fundamental Parameters
Abstract

We report on the mass and distance measurements of two single-lens events from the 2015 Spitzermicrolensing campaign. With both finite-source effect and microlens parallax measurements, we find that the lens of OGLE-2015-BLG-1268 is very likely a brown dwarf (BD). Assuming that the source star lies behind the same amount of dust as the Bulge red clump, we find the lens is a 45 ± 7  BD at 5.9 ± 1.0 kpc. The lens of of the second event, OGLE-2015-BLG-0763, is a 0.50 ± 0.04  star at 6.9 ± 1.0 kpc. We show that the probability to definitively measure the mass of isolated microlenses is dramatically increased once simultaneous ground- and space-based observations are conducted.

Funding ProjectJPL grant[1500811] ; NSF[AST-1516842] ; NASA ; National Science Centre, Poland[MAESTRO 2014/14/A/ST9/00121] ; Creative Research Initiative Program of National Research Foundation of Korea[2009-0081561] ; KASI grant[2016-1-832-01] ; STFC grant[ST/M001296/1] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[XDB09000000] ; Villum Foundation ; Gemini-Conicyt Fund[32120036] ; Danish Council for Independent Research, Natural Sciences ; Centre for Star and Planet Formation ; NPRP grant from the Qatar National Research Fund (a member of Qatar Foundation)[X-019-1-006] ; Regione Campania from POR-FSE Campania ; Communaute francaise de Belgique' Actions de recherche concertees' Academie universitaire Wallonie-Europe ; Science and Technology Facilities Council[ST/H005307/1] ; Science and Technology Facilities Council[ST/M000966/1] ; Science and Technology Facilities Council[ST/L000768/1] ; Science and Technology Facilities Council[ST/M001296/1]
Funding OrganizationJPL grant[1500811] ; NSF[AST-1516842] ; NASA ; National Science Centre, Poland[MAESTRO 2014/14/A/ST9/00121] ; Creative Research Initiative Program of National Research Foundation of Korea[2009-0081561] ; KASI grant[2016-1-832-01] ; STFC grant[ST/M001296/1] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[XDB09000000] ; Villum Foundation ; Gemini-Conicyt Fund[32120036] ; Danish Council for Independent Research, Natural Sciences ; Centre for Star and Planet Formation ; NPRP grant from the Qatar National Research Fund (a member of Qatar Foundation)[X-019-1-006] ; Regione Campania from POR-FSE Campania ; Communaute francaise de Belgique' Actions de recherche concertees' Academie universitaire Wallonie-Europe ; Science and Technology Facilities Council[ST/H005307/1, ST/M000966/1, ST/L000768/1, ST/M001296/1]
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000381930000060
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordGravitational Lensing Experiment ; Parallax Satellite Mass ; Galactic Bulge ; Spitzer Observations ; Planet Sensitivity ; Proper Motions ; Ogle-iii ; Events ; Stars ; Systems
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18133
Collection系外行星研究组
Corresponding AuthorZhu, Wei
Affiliation1.Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA; weizhu@astronomy.ohio-state.edu
2.NASA Exoplanet Science Institute, MS 100-22, California Institute of Technology, Pasadena, CA 91125, USA
3.Dipartimento di Fisica “E. R. Caianiello,” Universitá di Salerno, Via Giovanni Paolo II, I-84084 Fisciano (SA), Italy
4.Istituto Internazionale per gli Alti Studi Scientifici (IIASS), Via G. Pellegrino 19, I-84019 Vietri sul Mare (SA), Italy
5.Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
6.Department of Physics, Chungbuk National University, Cheongju 361-763, Korea
7.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
8.School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel
9.Sorbonne Universités, UPMC Univ Paris 6 et CNRS, UMR 7095, Institut d’Astrophysique de Paris, 98 bis bd Arago, F-75014 Paris, France
10.Niels Bohr Institute & Centre for Star and Planet Formation, University of Copenhagen, ?ster Voldgade 5, DK-1350 Copenhagen, Denmark
11.Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Italy
12.Turitea Observatory, Palmerston North, New Zealand
13.Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA
14.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
15.University of Canterbury, Department of Physics and Astronomy, Private Bag 4800, Christchurch 8020, New Zealand
16.Korea Astronomy and Space Science Institute, Daejon 305-348, Korea
17.School of Space Research, Kyung Hee University, Yongin 446-701, Korea
18.Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, suite 102, Goleta, CA 93117, USA
19.Astronomisches Rechen-Institut, Zentrum für Astronomie der Universit?t Heidelberg (ZAH), D-69120 Heidelberg, Germany
20.Qatar Environment and Energy Research Institute (QEERI), HBKU, Qatar Foundation, Doha, Qatar
21.SUPA, School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, UK
22.Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Road 5, Hai Dian District, Beijing 100871, China
23.European Southern Observatory, Karl-Schwarzschild Stra?e 2, D-85748 Garching bei München, Germany
24.National Astronomical Observatories, Chinese Academy of Sciences, 100012 Beijing, China
25.South African Astronomical Observatory, P.O. Box 9, Observatory 7935, South Africa
26.Planetary and Space Sciences, Department of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK
27.Astrophysics Research Institute, Liverpool John Moores University, Liverpool CH41 1LD, UK
28.Centre for Electronic Imaging, Department of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK
29.Niels Bohr Institute, University of Copenhagen, Juliane Mariesvej 30, DK-2100 Copenhagen ?, Denmark
30.Meteorologisches Institut, Universit?t Hamburg, Bundesstra?e 55, D-20146 Hamburg, Germany
31.Max Planck Institute for Astronomy, K?nigstuhl 17, D-69117 Heidelberg, Germany
32.Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
33.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
34.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK
35.Finnish Centre for Astronomy with ESO (FINCA), V?is?l?ntie 20, FI-21500 Piikki?, Finland
36.Unidad de Astronomía, Fac. de Ciencias Básicas, Universidad de Antofagasta, Avda. U. de Antofagasta 02800, Antofagasta, Chile
37.CITEUC—Centre for Earth and Space Science Research of the University of Coimbra, Observatório Astronómico da Universidade de Coimbra, 3030-004 Coimbra, Portugal
38.Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicu?a Mackenna 4860, 7820436 Macul, Santiago, Chile
39.Department of Physics, Sharif University of Technology, P.O. Box 11155-9161 Tehran, Iran
40.Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
41.Institut d’Astrophysique et de Géophysique, Allée du 6 Ao?t 17, Sart Tilman, Bat. B5c, B-4000 Liège, Belgium
42.Sagan Visiting Fellow.
43.NASA Postdoctoral Program Fellow.
44.Sagan Fellow.
45.Royal Society University Research Fellow.
Recommended Citation
GB/T 7714
Zhu, Wei,Novati, S. Calchi,Gould, A.,et al. MASS MEASUREMENTS OF ISOLATED OBJECTS FROM SPACE-BASED MICROLENSING[J]. The Astrophysical Journal,2016,825(1).
APA Zhu, Wei.,Novati, S. Calchi.,Gould, A..,Udalski, A..,Han, C..,...&Wertz, O..(2016).MASS MEASUREMENTS OF ISOLATED OBJECTS FROM SPACE-BASED MICROLENSING.The Astrophysical Journal,825(1).
MLA Zhu, Wei,et al."MASS MEASUREMENTS OF ISOLATED OBJECTS FROM SPACE-BASED MICROLENSING".The Astrophysical Journal 825.1(2016).
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