An analysis of binary microlensing event OGLE-2015-BLG-0060 | |
Tsapras, Y.3; Cassan, A.4; Ranc, C.1; Bachelet, E.5; Street, R.5; Udalski, A.6; Hundertmark, M.3; Bozza, V.7,8; Beaulieu, J. P.4,9; Marquette, J. B.4 | |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
2019-08-01 | |
卷号 | 487期号:4页码:4603-4614 |
关键词 | gravitational lensing: micro methods: observational techniques: photometric Galaxy: bulge |
ISSN号 | 0035-8711 |
DOI | 10.1093/mnras/stz1404 |
产权排序 | 第32完成单位 |
文献子类 | Article |
英文摘要 | We present the analysis of stellar binary microlensing event OGLE-2015-BLG-0060 based on observations obtained from 13 different telescopes. Intensive coverage of the anomalous parts of the light curve was achieved by automated follow-up observations from the robotic telescopes of the Las Cumbres Observatory. We show that, for the first time, all main features of an anomalous microlensing event are well covered by follow-up data, allowing us to estimate the physical parameters of the lens. The strong detection of second-order effects in the event light curve necessitates the inclusion of longer-baseline survey data in order to constrain the parallax vector. We find that the event was most likely caused by a stellar binary-lens with masses and . The distance to the lensing system is 6.41 +/- 0.14kpc and the projected separation between the two components is 13.85 +/- 0.16 au. Alternative interpretations are also considered. |
学科主题 | 天文学 ; 天体物理学 ; 实测天体物理学 ; 恒星与银河系 ; 恒星天文学 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
资助项目 | Universite Pierre et Marie Curie under grant Emergence@Sorbonne Universites 2016 ; National Science Foundation of China[11333003] ; National Science Foundation of China[11390372] ; STFC[ST/M001296/1] ; DFG priority program Exploring the Diversity of Extrasolar Planets[SPP 1992] ; DFG priority program Exploring the Diversity of Extrasolar Planets[WA 1047/11-1] ; National Science Centre, Poland[MAESTRO 2014/14/A/ST9/00121] ; NASA[NNX15AC97G] ; JSPS KAKENHI[JSPS24253004] ; JSPS KAKENHI[JSPS26247023] ; JSPS KAKENHI[JSPS23340064] ; JSPS KAKENHI[JSPS15H00781] ; JSPS KAKENHI[JP16H06287] ; ESO Telescopes at the La Silla Paranal Observatory[177.D-3023] |
WOS关键词 | MILKY-WAY ; GRAVITATIONAL LENS ; GALACTIC BULGE ; T-EFF ; PLANETS ; DISCOVERY ; ALGORITHM ; SYSTEMS ; NETWORK ; SEARCH |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000475888500013 |
资助机构 | Universite Pierre et Marie Curie under grant Emergence@Sorbonne Universites 2016 ; National Science Foundation of China[11333003, 11390372] ; STFC[ST/M001296/1] ; DFG priority program Exploring the Diversity of Extrasolar Planets[SPP 1992] ; DFG priority program Exploring the Diversity of Extrasolar Planets[WA 1047/11-1] ; National Science Centre, Poland[MAESTRO 2014/14/A/ST9/00121] ; NASA[NNX15AC97G] ; JSPS KAKENHI[JSPS24253004, JSPS26247023, JSPS23340064, JSPS15H00781, JP16H06287] ; ESO Telescopes at the La Silla Paranal Observatory[177.D-3023] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/20829] |
专题 | 云南天文台_系外行星研究组 |
通讯作者 | Tsapras, Y.; Cassan, A. |
作者单位 | 1.Code 667, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA 2.Max Planck Institute for Astronomy, Konigstuhl 17, D-69117 Heidelberg, ¨ Germany 3.Zentrum fur Astronomie der Universit ¨ at Heidelberg, Astronomisches ¨ Rechen-Institut, Monchhofstr 12-14, D-69120 Heidelberg, Germany 4.Institut d'Astrophysique de Paris, Sorbonne Universite, CNRS, UMR 7095, ´ 98 bis bd Arago, F-75014 Paris, France 5.Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, suite 102, Goleta, CA 93117, USA 6.Warsaw University Observatory, Al. Ujazdowskie 4, PL-00-478 Warszawa, Poland 7.Dipartimento di Fisica 'E.R. Caianiello', Universita di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy 8.Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Via Cintia, I-80126 Napoli, Italy 9.School of Physical Sciences, University of Tasmania, Private Bag 37 Hobart, Tasmania 7001 Australia 10.New York University Abu Dhabi, PO Box 129188, Saadiyat Island, Abu Dhabi, UAE |
推荐引用方式 GB/T 7714 | Tsapras, Y.,Cassan, A.,Ranc, C.,et al. An analysis of binary microlensing event OGLE-2015-BLG-0060[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,487(4):4603-4614. |
APA | Tsapras, Y..,Cassan, A..,Ranc, C..,Bachelet, E..,Street, R..,...&Yonehara, A..(2019).An analysis of binary microlensing event OGLE-2015-BLG-0060.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,487(4),4603-4614. |
MLA | Tsapras, Y.,et al."An analysis of binary microlensing event OGLE-2015-BLG-0060".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 487.4(2019):4603-4614. |
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