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earth and planetary sciences

First Assessment of the Binary Lens OGLE-2015-BLG-0232

Astrophysical Journal, Volume 870, No. 1, Article 11, Year 2019

We present an analysis of the microlensing event OGLE-2015-BLG-0232. This event is challenging to characterize for two reasons. First, the light curve is not well sampled during the caustic crossing due to the proximity of the full Moon impacting the photometry quality. Moreover, the source brightness is difficult to estimate because this event is blended with a nearby K dwarf star. We found that the light-curve deviations are likely due to a close brown dwarf companion (i.e., s = 0.55 and q = 0.06), but the exact nature of the lens is still unknown. We finally discuss the potential of follow-up observations to estimate the lens mass and distance in the future.

Bachelet, Etienne
1. United States, Santa Barbara Las Cumbres Observatory Global Telescope Network, Inc
Bozza, Valerio
1. Italy, Salerno Università Degli Studi Di Salerno
2. Italy Vietri Sul Mare sa
Han, Cheongho
1. South Korea, Cheongju Chungbuk National University
Udalski, Andrzej
1. Poland, Warsaw University of Warsaw
Bond, Ian A.
1. New Zealand, Auckland Massey University Auckland
Beaulieu, Jean Philippe H.
1. Australia, Hobart University of Tasmania
2. France, Paris Institut D’astrophysique de Paris
Street, Rachel A.
1. United States, Santa Barbara Las Cumbres Observatory Global Telescope Network, Inc
Kim, H. I.
1. South Korea, Daejeon Korea Astronomy and Space Science Institute
Bramich, Daniel M.
1. United Arab Emirates, Abu Dhabi Nyu Abu Dhabi
Cassan, Arnaud
1. France, Paris Institut D’astrophysique de Paris
Dominik, Martin
1. United Kingdom, St Andrews University of st Andrews
Jaimes, R. Figuera
1. United Kingdom, St Andrews University of st Andrews
2. China, Beijing Tsinghua University
3. Germany, Garching Bei Munchen European Southern Observatory
Hörne, Keith D.
1. United Kingdom, St Andrews University of st Andrews
Hundertmark, Markus P.G.
1. Denmark, Copenhagen Niels Bohr Institutet
2. Germany, Heidelberg Astronomisches Rechen-institut
Mao, Shude
1. China, Beijing Tsinghua University
2. China, Beijing National Astronomical Observatories Chinese Academy of Sciences
3. United Kingdom, Manchester The University of Manchester
4. South Africa, Cape Town South African Astronomical Observatory
Menzies, John W.
1. United Kingdom, Milton Keynes The Open University
Ranc, Clément
1. France, Paris Institut D’astrophysique de Paris
Schmidt, R.
1. Germany, Heidelberg Astronomisches Rechen-institut
Snodgrass, Colin
1. United Kingdom, Liverpool Liverpool John Moores University
Steele, Iain A.
1. United Kingdom, Manchester The University of Manchester
Tsapras, Yiannis
1. Germany, Heidelberg Astronomisches Rechen-institut
Wambsganss, Joachim
1. Germany, Heidelberg Astronomisches Rechen-institut
Mróz, Przemek
1. Poland, Warsaw University of Warsaw
Soszyński, Igor
1. Poland, Warsaw University of Warsaw
Szymánski, Michał K.
1. Poland, Warsaw University of Warsaw
Skowron, Jan
1. Poland, Warsaw University of Warsaw
Pietrukowicz, Pawełl
1. Poland, Warsaw University of Warsaw
Kozłowski, Szymon Z.
1. Poland, Warsaw University of Warsaw
Poleski, Radoslaw
1. United States, Columbus The Ohio State University
Ulaczyk, Krzysztof
1. Poland, Warsaw University of Warsaw
Pawlak, Michał
1. Poland, Warsaw University of Warsaw
Abe, Fumio
1. Japan, Nagoya Nagoya University
Barry, Richard K.
1. United States, Greenbelt Nasa Goddard Space Flight Center
Bennett, David P.
1. United States, Greenbelt Nasa Goddard Space Flight Center
2. United States, College Park University of Maryland, College Park
Bhattacharya, Aparna
1. United States, Greenbelt Nasa Goddard Space Flight Center
2. United States, College Park University of Maryland, College Park
Donachie, M.
1. New Zealand, Auckland The University of Auckland
Fukui, Akihiko
1. Japan, Mitaka National Institutes of Natural Sciences - National Astronomical Observatory of Japan
2. Spain, San Cristobal de la Laguna Instituto Astrofisico de Canarias
Hirao, Yuki
1. Japan, Suita Osaka University
Itow, Yoshitaka
1. Japan, Nagoya Nagoya University
Kawasaki, K.
1. Japan, Suita Osaka University
Kondo, Iona
1. Japan, Suita Osaka University
Koshimoto, Naoki
1. Japan, Tokyo The University of Tokyo
2. Japan, Mitaka National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Cheung Alex Li, M.
1. New Zealand, Auckland The University of Auckland
Matsubara, Yutaka
1. Japan, Nagoya Nagoya University
Muraki, Y.
1. Japan, Nagoya Nagoya University
Miyazaki, Shota
1. Japan, Suita Osaka University
Nagakane, M.
1. Japan, Suita Osaka University
Rattenbury, Nicholas James
1. New Zealand, Auckland The University of Auckland
Suematsu, H.
1. Japan, Suita Osaka University
Sullivan, Denis J.
1. New Zealand, Wellington Victoria University of Wellington
Sumi, Takahiro
1. Japan, Suita Osaka University
Suzuki, Daisuke
1. Japan, Sagamihara Jaxa Institute of Space and Astronautical Science
Tristram, Paul J.
1. New Zealand, Christchurch University of Canterbury
Yonehara, A.
1. Japan, Kyoto Kyoto Sangyo University

AFRICAN RESEARCH NEXUS

First Assessment of the Binary Lens OGLE-2015-BLG-0232

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AFRICAN RESEARCH NEXUS

First Assessment of the Binary Lens OGLE-2015-BLG-0232

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African Research Nexus

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