Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
A possible binary system of a stellar remnant in the high-magnification gravitational microlensing event OGLE-2007-BLG-514
Astrophysical Journal, Volume 752, No. 2, Article 82, Year 2012
Notification
URL copied to clipboard!
Description
We report the extremely high-magnification (A > 1000) binary microlensing event OGLE-2007-BLG-514. We obtained good coverage around the double peak structure in the light curve via follow-up observations from different observatories. The binary lens model that includes the effects of parallax (known orbital motion of the Earth) and orbital motion of the lens yields a binary lens mass ratio of q = 0.321 ± 0.007 and a projected separation of s = 0.072 ± 0.001 in units of the Einstein radius. The parallax parameters allow us to determine the lens distance DL = 3.11 ± 0.39kpc and total mass ML = 1.40 ± 0.18 M ⊙; this leads to the primary and secondary components having masses of M 1 = 1.06 ± 0.13 M ⊙ and M 2 = 0.34 ± 0.04 M ⊙, respectively. The parallax model indicates that the binary lens system is likely constructed by the main-sequence stars. On the other hand, we used a Bayesian analysis to estimate probability distributions by the model that includes the effects of xallarap (possible orbital motion of the source around a companion) and parallax (q = 0.270 ± 0.005, s = 0.083 ± 0.001). The primary component of the binary lens is relatively massive, with M 1 = 0.9+4.6-0.3 M ⊙ and it is at a distance of D L = 2.6+3.8-0.9kpc. Given the secure mass ratio measurement, the companion mass is therefore M 2 = 0.2+1.2-0.1 M ⊙. The xallarap model implies that the primary lens is likely a stellar remnant, such as a white dwarf, a neutron star, or a black hole. © 2012. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Miyake, Noriyuki
Japan, Nagoya
Nagoya University
Udalski, Andrzej
Poland, Warsaw
University of Warsaw
Sumi, Takahiro
Japan, Suita
Osaka University
Bennett, David P.
United States, Notre Dame
University of Notre Dame
Dong, Subo
United States, Columbus
The Ohio State University
Street, Rachel A.
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
Greenhill, John G.
Australia, Hobart
University of Tasmania
Bond, Ian A.
New Zealand, Auckland
Massey University Auckland
Gould, Andrew P.
United States, Columbus
The Ohio State University
Kubiak, Marcin
Poland, Warsaw
University of Warsaw
Szymánski, Michał K.
Poland, Warsaw
University of Warsaw
Pietrzýnski, Grzegorz
Poland, Warsaw
University of Warsaw
Chile, Biobio
Universidad de Concepcion
Soszyński, Igor
Poland, Warsaw
University of Warsaw
Ulaczyk, Krzysztof
Poland, Warsaw
University of Warsaw
Wyrzykowski, Łukasz
Poland, Warsaw
University of Warsaw
United Kingdom, Cambridge
Institute of Astronomy
Abe, Fumio
Japan, Nagoya
Nagoya University
Fukui, Akihiko
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Furusawa, Kei
Japan, Nagoya
Nagoya University
Holderness, S.
New Zealand, Auckland
The University of Auckland
Itow, Yoshitaka
Japan, Nagoya
Nagoya University
Korpela, Aarno V.
New Zealand, Lake Tekapo
University of Canterbury Mount John Observatory
Ling, Chohong
New Zealand, Auckland
Massey University Auckland
Masuda, Kimiaki
Japan, Nagoya
Nagoya University
Matsubara, Yutaka
Japan, Nagoya
Nagoya University
Muraki, Y.
Japan, Nagoya
Nagoya University
Nagayama, Takahiro
Japan, Nagoya
Nagoya University
Ohnishi, Kouji
Japan, Nagano
National Institute of Technology, Nagano College
Rattenbury, Nicholas James
New Zealand, Auckland
The University of Auckland
Saito, To
Japan, Tokyo
Tokyo Metropolitan College of Industrial Technology
Sako, Takashi
Japan, Nagoya
Nagoya University
Sullivan, Denis J.
New Zealand, Wellington
Victoria University of Wellington
Sweatman, Winston L.
New Zealand, Auckland
Massey University Auckland
Tristram, Paul J.
New Zealand, Lake Tekapo
University of Canterbury Mount John Observatory
Yock, C. M.
New Zealand, Auckland
The University of Auckland
Allen, William H.
South Africa, Pretoria
Bronberg Observatory
Christie, Grant W.
New Zealand, Auckland
Stardome Observatory, Auckland
DePoy, Darren L.
United States, Columbus
The Ohio State University
Gaudi, B. Scott
United States, Columbus
The Ohio State University
Han, Cheongho
South Korea, Cheongju
Chungbuk National University
Lee, Chung-uk
South Korea, Daejeon
Korea Astronomy and Space Science Institute
McCormick, Jennie M.
New Zealand, Auckland
Centre for Backyard Astrophysics
Monard, Berto L.A.G.
South Africa, Pretoria
Bronberg Observatory
Natusch, Timothy J.
New Zealand, Auckland
Auckland University of Technology
Park, Byeong-gon
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Pogge, Richard W.
United States, Columbus
The Ohio State University
Allan, Alasdair
United Kingdom, Exeter
University of Exeter
Bode, Michael F.
United Kingdom, Liverpool
Liverpool John Moores University
Bramich, Daniel M.
Germany, Garching Bei Munchen
European Southern Observatory
Clay, Neil R.
United Kingdom, Liverpool
Liverpool John Moores University
Dominik, Martin
United Kingdom, St Andrews
University of st Andrews
Hörne, Keith D.
United Kingdom, St Andrews
University of st Andrews
Kains, Noé
Germany, Garching Bei Munchen
European Southern Observatory
Mottram, Christopher J.
United Kingdom, Liverpool
Liverpool John Moores University
Snodgrass, Colin
Germany, Gottingen
Max Planck Institute for Solar System Research
Chile, Santiago
European Southern Observatory Santiago
Steele, Iain A.
United Kingdom, Liverpool
Liverpool John Moores University
Tsapras, Yiannis
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
United Kingdom, London
Queen Mary University of London
Albrow, Michael D.
New Zealand, Christchurch
University of Canterbury
Batista, Virginie
France, Paris
Institut D’astrophysique de Paris
Beaulieu, Jean Philippe H.
France, Paris
Institut D’astrophysique de Paris
Brillant, Stéphanie
Chile, Santiago
European Southern Observatory Santiago
Burgdorf, Martin J.
New Zealand, Auckland
Auckland University of Technology
United States, Moffett Field
Sofia Science Center
Caldwell, John A.R.
United States, Davis
Mcdonald Observatory
Cassan, Arnaud
France, Paris
Institut D’astrophysique de Paris
Cole, Andrew A.
Australia, Hobart
University of Tasmania
Cook, Kem H.
United States, Livermore
Lawrence Livermore National Laboratory
Coutures, Christian
France, Gif-sur-yvette
Cea Saclay
Dieters, Stefan W.B.
Australia, Hobart
University of Tasmania
France, Paris
Institut D’astrophysique de Paris
Prester, Dijana Dominis
Croatia, Rijeka
Faculty of Physics, University of Rijeka
Donatowicz, J.
Austria, Vienna
Technische Universität Wien
Fouqué, Pascal
France, Toulouse
Institut de Recherche en Astrophysique et Planétologie Irap
Jörgensen, Uffe Gråe
Denmark, Copenhagen
Niels Bohr Institutet
Kane, Stephen R.
United States, Washington, D.c.
National Aeronautics and Space Administration
Kubas, Daniel
Austria, Vienna
Technische Universität Wien
Marquette, Jean Baptiste
France, Paris
Institut D’astrophysique de Paris
Martin, Ralph
Australia, Bickley
Perth Observatory
Menzies, John W.
South Africa, Cape Town
South African Astronomical Observatory
Pollard, Karen R.
New Zealand, Christchurch
University of Canterbury
Sahu, Kailash C.
United States, Baltimore
Space Telescope Science Institute
Wambsganss, Joachim
Germany, Heidelberg
Astronomisches Rechen-institut
Williams, Andrew J.
Australia, Bickley
Perth Observatory
Zub, Marta
Germany, Heidelberg
Astronomisches Rechen-institut
Statistics
Citations: 81
Authors: 81
Affiliations: 44
Identifiers
Doi:
10.1088/0004-637X/752/2/82
ISSN:
0004637X
e-ISSN:
15384357
Research Areas
Health System And Policy
Study Design
Cohort Study