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MASS MEASUREMENTS OF ISOLATED OBJECTS FROM SPACE-BASED MICROLENSING

文献类型：期刊论文

作者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
刊名The Astrophysical Journal
出版日期2016-06-27
卷号825期号:1
关键词Brown Dwarfs Gravitational Lensing: Micro Stars: Fundamental Parameters
ISSN号0004-637X
DOI10.3847/0004-637X/825/1/60
产权排序第33完成单位
文献子类Article
英文摘要

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.

学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词Gravitational Lensing Experiment ; Parallax Satellite Mass ; Galactic Bulge ; Spitzer Observations ; Planet Sensitivity ; Proper Motions ; Ogle-iii ; Events ; Stars ; Systems
资助项目JPL 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]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000381930000060
出版者IOP PUBLISHING LTD
资助机构JPL 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]
源URL[http://ir.ynao.ac.cn/handle/114a53/18132]  
专题云南天文台_系外行星研究组
通讯作者Zhu, Wei
作者单位1.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
推荐引用方式
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).

入库方式： OAI收割

来源：云南天文台

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