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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
OGLE-2005-BLG-153: Microlensing discovery and characterization of a very low mass binary
Astrophysical Journal, Volume 723, No. 1, Year 2010
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Description
The mass function and statistics of binaries provide important diagnostics of the star formation process. Despite this importance, the mass function at low masses remains poorly known due to observational difficulties caused by the faintness of the objects. Here we report the microlensing discovery and characterization of a binary lens composed of very low mass stars just above the hydrogen-burning limit. From the combined measurements of the Einstein radius and microlens parallax, we measure the masses of the binary components of 0.10±0.01 M⊙ and 0.09±0.01 M⊙. This discovery demonstrates that microlensing will provide a method to measure the mass function of all Galactic populations of very low mass binaries that is independent of the biases caused by the luminosity of the population. © 2010. The American Astronomical Society.
Authors & Co-Authors
Hwang, Kyu-ha
Unknown Affiliation
Udalski, Andrzej
Unknown Affiliation
Han, Cheongho
Unknown Affiliation
Ryu, Yoon-hyun
Unknown Affiliation
Bond, Ian A.
Unknown Affiliation
Beaulieu, Jean Philippe H.
Unknown Affiliation
Dominik, Martin
Unknown Affiliation
Hörne, Keith D.
Unknown Affiliation
Gould, Andrew P.
Unknown Affiliation
Gaudi, B. Scott
Unknown Affiliation
Kubiak, Marcin
Unknown Affiliation
Szymánski, Michał K.
Unknown Affiliation
Pietrzýnski, Grzegorz
Unknown Affiliation
Soszyński, Igor
Unknown Affiliation
Szewczyk, Olaf
Unknown Affiliation
Ulaczyk, Krzysztof
Unknown Affiliation
Wyrzykowski, Łukasz
Unknown Affiliation
Abe, Fumio
Unknown Affiliation
Botzler, Christine S.
Unknown Affiliation
Hearnshaw, John B.
Unknown Affiliation
Itow, Yoshitaka
Unknown Affiliation
Kamiya, Koki
Unknown Affiliation
Kilmartin, Pamela M.
Unknown Affiliation
Masuda, Kimiaki
Unknown Affiliation
Matsubara, Yutaka
Unknown Affiliation
Motomura, M.
Unknown Affiliation
Muraki, Y.
Unknown Affiliation
Nakamura, S.
Unknown Affiliation
Ohnishi, Kouji
Unknown Affiliation
Okada, C.
Unknown Affiliation
Rattenbury, Nicholas James
Unknown Affiliation
Saito, To
Unknown Affiliation
Sako, Takashi
Unknown Affiliation
Sasaki, M.
Unknown Affiliation
Sullivan, Denis J.
Unknown Affiliation
Sumi, Takahiro
Unknown Affiliation
Tristram, Paul J.
Unknown Affiliation
Wood, J.
Unknown Affiliation
Yock, C. M.
Unknown Affiliation
Yoshioka, Tsutomu
Unknown Affiliation
Albrow, Michael D.
Unknown Affiliation
Bennett, David P.
Unknown Affiliation
Bramich, Daniel M.
Unknown Affiliation
Brillant, Stéphanie
Unknown Affiliation
Caldwell, John A.R.
Unknown Affiliation
Calitz, J. J.
Unknown Affiliation
Cassan, Arnaud
Unknown Affiliation
Cook, Kem H.
Unknown Affiliation
Corrales, E.
Unknown Affiliation
Coutures, Christian
Unknown Affiliation
Desort, M.
Unknown Affiliation
Dieters, Stefan W.B.
Unknown Affiliation
Dominis, D.
Unknown Affiliation
Donatowicz, J.
Unknown Affiliation
Fouqué, Pascal
Unknown Affiliation
Greenhill, John G.
Unknown Affiliation
Harpsøe, Kennet B.W.
Unknown Affiliation
Hill, Kym M.
Unknown Affiliation
Hoffman, Matie J.H.
Unknown Affiliation
Jörgensen, Uffe Gråe
Unknown Affiliation
Kane, Stephen R.
Unknown Affiliation
Kubas, Daniel
Unknown Affiliation
Martin, Ralph
Unknown Affiliation
Marquette, Jean Baptiste
Unknown Affiliation
Meintjes, Pieter J.
Unknown Affiliation
Menzies, John W.
Unknown Affiliation
Pollard, Karen R.
Unknown Affiliation
Sahu, Kailash C.
Unknown Affiliation
Steele, Iain A.
Unknown Affiliation
Vinter, C.
Unknown Affiliation
Wambsganss, Joachim
Unknown Affiliation
Williams, Andrew J.
Unknown Affiliation
Woller, Kristian G.
Unknown Affiliation
Burgdorf, Martin J.
Unknown Affiliation
Snodgrass, Colin
Unknown Affiliation
Bode, Michael F.
Unknown Affiliation
DePoy, Darren L.
Unknown Affiliation
Lee, Chung-uk
Unknown Affiliation
Park, Byeong-gon
Unknown Affiliation
Pogge, Richard W.
Unknown Affiliation
Statistics
Citations: 80
Authors: 80
Affiliations: 38
Identifiers
Doi:
10.1088/0004-637X/723/1/797
ISSN:
0004637X
e-ISSN:
15384357
Study Design
Cross Sectional Study