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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Determination of stellar shape in microlensing event MOA 2002-BLG-33
Astronomy and Astrophysics, Volume 439, No. 2, Year 2005
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Description
We report a measurement of the shape of the source star in microlensing event MOA 2002-BLG-33. The lens for this event was a close binary whose centre-of-mass passed almost directly in front of the source star. At this time, the source star was closely bounded on all sides by a caustic of the lens. This allowed the oblateness of the source star to be constrained. We found that a/b = 1.02 -0.02+0.04 where a and b are its semi-major and semi-minor axes respectively. The angular resolution of this measurement is approximately 0.04 μarcsec. We also report HST images of the event that confirm a previous identification of the source star as an F8-G2 turn-off main-sequence star. © ESO 2005.
Authors & Co-Authors
Rattenbury, Nicholas James
United Kingdom, Manchester
The University of Manchester
Abe, Fumio
Japan, Nagoya
Nagoya University
Bennett, David P.
United States, Notre Dame
University of Notre Dame
Bond, Ian A.
New Zealand, Auckland
Massey University Auckland
Calitz, J. J.
South Africa, Bloemfontein
University of the Free State
Claret, A.
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
Cook, Kem H.
United States, Livermore
Institute of Geophysics and Planetary Physics at Lawrence Livermore National Laboratory
Furuta, Y.
Japan, Nagoya
Nagoya University
Gal-Yam, Avishay
United States, Pasadena
California Institute of Technology
Glicenstein, Jean François
France, Gif-sur-yvette
Cea Saclay
Hearnshaw, John B.
New Zealand, Christchurch
University of Canterbury
Hauschildt, Peter H.
Germany, Hamburg
Universität Hamburg
Kilmartin, Pamela M.
New Zealand, Christchurch
University of Canterbury
Kurata, Y.
Japan, Nagoya
Nagoya University
Masuda, Kimiaki
Japan, Nagoya
Nagoya University
Maoz, Dan
Israel, Tel Aviv-yafo
Tel Aviv University
Matsubara, Yutaka
Japan, Nagoya
Nagoya University
Meintjes, Pieter J.
South Africa, Bloemfontein
University of the Free State
Moniez, Marc
France, Orsay
Laboratoire de L'accélérateur Linéaire
Muraki, Y.
Japan, Nagoya
Nagoya University
Noda, S.
Japan, Nagoya
Nagoya University
Ofek, Eran O.
Israel, Tel Aviv-yafo
Tel Aviv University
Okajima, K.
Japan, Nagoya
Nagoya University
Philpott, Lydia C.
New Zealand, Auckland
Faculty of Science
Rhie, Sun-hong
United States, Notre Dame
University of Notre Dame
Sako, Takashi
Japan, Nagoya
Nagoya University
Sullivan, Denis J.
New Zealand, Wellington
Victoria University of Wellington
Sumi, Takahiro
United States, Princeton
Princeton University
Terndrup, Donald M.
United States, Columbus
The Ohio State University
Tristram, Paul J.
New Zealand, Christchurch
University of Canterbury
Wood, J.
New Zealand, Auckland
Faculty of Science
Yanagisawa, T.
Japan, Nagoya
Nagoya University
Yock, C. M.
New Zealand, Auckland
Faculty of Science
Statistics
Citations: 33
Authors: 33
Affiliations: 17
Identifiers
Doi:
10.1051/0004-6361:20052858
ISSN:
00046361