An analysis of binary microlensing event OGLE-2015-BLG-0060

doi:10.1093/mnras/stz1404

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	An analysis of binary microlensing event OGLE-2015-BLG-0060
	Tsapras, Y.3; Cassan, A.4; Ranc, C.5; Bachelet, E.6; Street, R.6; Udalski, A.7; Hundertmark, M.3; Bozza, V.8,9; Beaulieu, J. P.4,10; 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
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.
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 ; Universite Pierre et Marie Curie under grant Emergence@Sorbonne Universites 2016 ; National Science Foundation of China ; National Science Foundation of China ; STFC ; STFC ; DFG priority program Exploring the Diversity of Extrasolar Planets ; DFG priority program Exploring the Diversity of Extrasolar Planets ; National Science Centre, Poland ; National Science Centre, Poland ; NASA ; NASA ; JSPS KAKENHI ; JSPS KAKENHI ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; Universite Pierre et Marie Curie under grant Emergence@Sorbonne Universites 2016 ; Universite Pierre et Marie Curie under grant Emergence@Sorbonne Universites 2016 ; National Science Foundation of China ; National Science Foundation of China ; STFC ; STFC ; DFG priority program Exploring the Diversity of Extrasolar Planets ; DFG priority program Exploring the Diversity of Extrasolar Planets ; National Science Centre, Poland ; National Science Centre, Poland ; NASA ; NASA ; JSPS KAKENHI ; JSPS KAKENHI ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; Universite Pierre et Marie Curie under grant Emergence@Sorbonne Universites 2016 ; Universite Pierre et Marie Curie under grant Emergence@Sorbonne Universites 2016 ; National Science Foundation of China ; National Science Foundation of China ; STFC ; STFC ; DFG priority program Exploring the Diversity of Extrasolar Planets ; DFG priority program Exploring the Diversity of Extrasolar Planets ; National Science Centre, Poland ; National Science Centre, Poland ; NASA ; NASA ; JSPS KAKENHI ; JSPS KAKENHI ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; Universite Pierre et Marie Curie under grant Emergence@Sorbonne Universites 2016 ; Universite Pierre et Marie Curie under grant Emergence@Sorbonne Universites 2016 ; National Science Foundation of China ; National Science Foundation of China ; STFC ; STFC ; DFG priority program Exploring the Diversity of Extrasolar Planets ; DFG priority program Exploring the Diversity of Extrasolar Planets ; National Science Centre, Poland ; National Science Centre, Poland ; NASA ; NASA ; JSPS KAKENHI ; JSPS KAKENHI ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/27166]
专题	中国科学院国家天文台
通讯作者	Tsapras, Y.; Cassan, A.
作者单位	1.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 2.Sharif Univ Technol, Dept Phys, POB 11155-9161, Tehran, Iran 3.Heidelberg Univ, Astron Rechen Inst, Zentrum Astron, Monchhofstr 12-14, D-69120 Heidelberg, Germany 4.Sorbonne Univ, CNRS, UMR 7095, Inst Astrophys Paris, 98 Bis Bd Arago, F-75014 Paris, France 5.NASA, Goddard Space Flight Ctr, Code 667, Greenbelt, MD 20771 USA 6.Global Telescope Network, Las Cumbres Observ, 6740 Cortona Dr,suite 102, Goleta, CA 93117 USA 7.Univ Warsaw Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland 8.Univ Salerno, Dipartimento Fis ER Caianiello, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy 9.Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy 10.Univ Tasmania, Sch Phys Sci, Private Bag 37, Hobart, Tas 7001, Australia
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.