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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Microlensing discovery of a tight, low-mass-ratio planetary-mass object around an old field brown dwarf
Astrophysical Journal, Volume 778, No. 1, Article 38, Year 2013
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Description
Observations of accretion disks around young brown dwarfs (BDs) have led to the speculation that they may form planetary systems similar to normal stars. While there have been several detections of planetary-mass objects around BDs (2MASS 1207-3932 and 2MASS 0441-2301), these companions have relatively large mass ratios and projected separations, suggesting that they formed in a manner analogous to stellar binaries. We present the discovery of a planetary-mass object orbiting a field BD via gravitational microlensing, OGLE-2012-BLG-0358Lb. The system is a low secondary/primary mass ratio (0.080 ± 0.001), relatively tightly separated (0.87 AU) binary composed of a planetary-mass object with 1.9 ± 0.2 Jupiter masses orbiting a BD with a mass 0.022 M. The relatively small mass ratio and separation suggest that the companion may have formed in a protoplanetary disk around the BD host in a manner analogous to planets. © 2013. The American Astronomical Society. All rights reserved..
Authors & Co-Authors
Han, Cheongho
Unknown Affiliation
Jung, Younkil
Unknown Affiliation
Udalski, Andrzej
Unknown Affiliation
Sumi, Takahiro
Unknown Affiliation
Gaudi, B. Scott
Unknown Affiliation
Gould, Andrew P.
Unknown Affiliation
Bennett, David P.
Unknown Affiliation
Tsapras, Yiannis
Unknown Affiliation
Szymánski, Michał K.
Unknown Affiliation
Kubiak, Marcin
Unknown Affiliation
Pietrzýnski, Grzegorz
Unknown Affiliation
Soszyński, Igor
Unknown Affiliation
Skowron, Jan
Unknown Affiliation
Kozłowski, Szymon Z.
Unknown Affiliation
Poleski, Radoslaw
Unknown Affiliation
Ulaczyk, Krzysztof
Unknown Affiliation
Wyrzykowski, Łukasz
Unknown Affiliation
Pietrukowicz, Pawełl
Unknown Affiliation
Abe, Fumio
Unknown Affiliation
Bond, Ian A.
Unknown Affiliation
Botzler, Christine S.
Unknown Affiliation
Chote, Paul
Unknown Affiliation
Freeman, Matthew S.R.
Unknown Affiliation
Fukui, Akihiko
Unknown Affiliation
Furusawa, Kei
Unknown Affiliation
Harris, P.
Unknown Affiliation
Itow, Yoshitaka
Unknown Affiliation
Ling, Chohong
Unknown Affiliation
Masuda, Kimiaki
Unknown Affiliation
Matsubara, Yutaka
Unknown Affiliation
Muraki, Y.
Unknown Affiliation
Ohnishi, Kouji
Unknown Affiliation
Rattenbury, Nicholas James
Unknown Affiliation
Saito, To
Unknown Affiliation
Sullivan, Denis J.
Unknown Affiliation
Sweatman, Winston L.
Unknown Affiliation
Suzuki, Daisuke
Unknown Affiliation
Tristram, Paul J.
Unknown Affiliation
Wada, Kohei
Unknown Affiliation
Yock, C. M.
Unknown Affiliation
Batista, Virginie
Unknown Affiliation
Christie, Grant W.
Unknown Affiliation
Choi, Joon-young
Unknown Affiliation
DePoy, Darren L.
Unknown Affiliation
Dong, Subo
Unknown Affiliation
Hwang, Kyu-ha
Unknown Affiliation
Kavka, A.
Unknown Affiliation
Lee, Chung-uk
Unknown Affiliation
Monard, Libert A.G.Berto
Unknown Affiliation
Natusch, Timothy J.
Unknown Affiliation
Ngan, Haydn
Unknown Affiliation
Park, Hyuk
Unknown Affiliation
Pogge, Richard W.
Unknown Affiliation
Porritt, I.
Unknown Affiliation
Shin, In-gu
Unknown Affiliation
Tan, Thiam Guan
Unknown Affiliation
Yee, Jennifer C.
Unknown Affiliation
Alsubai, Khalid A.
Unknown Affiliation
Bozza, Valerio
Unknown Affiliation
Bramich, Daniel M.
Unknown Affiliation
Browne, Paul
Unknown Affiliation
Dominik, Martin
Unknown Affiliation
Hörne, Keith D.
Unknown Affiliation
Hundertmark, Markus P.G.
Unknown Affiliation
Ipatov, Sergei I.
Unknown Affiliation
Kains, Noé
Unknown Affiliation
Liebig, Christine
Unknown Affiliation
Snodgrass, Colin
Unknown Affiliation
Steele, Iain A.
Unknown Affiliation
Street, Rachel A.
Unknown Affiliation
Statistics
Citations: 70
Authors: 70
Affiliations: 31
Identifiers
Doi:
10.1088/0004-637X/778/1/38
ISSN:
0004637X
e-ISSN:
15384357