MASS MEASUREMENTS OF ISOLATED OBJECTS FROM SPACE-BASED MICROLENSING
文献类型：期刊论文
| 作者 | Zhu (祝伟),Wei3; Novati,S. Calchi4,5,6; Gould,A.3; Udalski,A.7; Han,C.8; Shvartzvald,Y.9,10; Ranc,C.11; J?rgensen,U. G.12; Poleski,R.3,7; Bozza,V.5,13 |
| 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 |
| DOI | 10.3847/0004-637X/825/1/60 |
| 英文摘要 | ABSTRACT We report on the mass and distance measurements of two single-lens events from the 2015 Spitzer microlensing 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. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-825-1-60 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/36137]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.17School of Space Research, Kyung Hee University, Yongin 446-701, Korea 2.38Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicu?a Mackenna 4860, 7820436 Macul, Santiago, Chile 3.Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA; weizhu@astronomy.ohio-state.edu 4.NASA Exoplanet Science Institute, MS 100-22, California Institute of Technology, Pasadena, CA 91125, USA 5.Dipartimento di Fisica “E. R. Caianiello,” Universitá di Salerno, Via Giovanni Paolo II, I-84084 Fisciano (SA), Italy 6.Istituto Internazionale per gli Alti Studi Scientifici (IIASS), Via G. Pellegrino 19, I-84019 Vietri sul Mare (SA), Italy 7.Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland 8.Department of Physics, Chungbuk National University, Cheongju 361-763, Korea 9.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA 10.School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel |
| 推荐引用方式 GB/T 7714 | Zhu ,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 .,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 ,et al."MASS MEASUREMENTS OF ISOLATED OBJECTS FROM SPACE-BASED MICROLENSING".The Astrophysical Journal 825.1(2016). |
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来源：国家天文台
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