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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
DOI10.1093/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
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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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