@Article{ChoiSPHGSUBSDAABCDDDGGHHJJLMMMMMMMNNPPTTYABBBBBFFFHHHIKKKKLLMMMMMNNOOOPRSSSSSSTTWYSKPSPUWKPABBBBBCCCCDPDFGKMSWWZABBCFHKMSSTABBNDDFGGGHHHHJKLMMMPPRRSSSSSSZCCCCCC:2012:ChLeLe,
author = "Choi, J. -Y. and Shin, I. -G. and Park, S. -Y. and Han, C. and
Gould, A. and Sumi, T. and Udalski, A. and Beaulieu, J. -P. and
Street, R. and Dominik, M. and Allen, W. and Almeida, Leonardo
Andrade de and Bos, M. and Christie, G. W. and Depoy, D. L. and
Dong, S. and Drummond, J. and Gal-Yam, A. and Gaudi, B. S. and
Henderson, C. B. and Hung, L. -W. and Jablonski, Francisco and
Janczak, J. and Lee, C. -U. and Mallia, F. and Maury, A. and
McCormick, J. and McGregor, D. and Monard, L. A. G. and Moorhouse,
D. and Munoz, J. A. and Natusch, T. and Nelson, C. and Park, B.
-G. and Pogge, R. W. and Tan, T. -G. ``TG'' and Thornley, G. and
Yee, J. C. and Abe, F. and Barnard, E. and Baudry, J. and Bennett,
D. P. and Bond, I. A. and Botzler, C. S. and Freeman, M. and
Fukui, A. and Furusawa, K. and Hayashi, F. and Hearnshaw, J. B.
and Hosaka, S. and Itow, Y. and Kamiya, K. and Kilmartin, P. M.
and Kobara, S. and Korpela, A. and Lin, W. and Ling, C. H. and
Makita, S. and Masuda, K. and Matsubara, Y. and Miyake, N. and
Muraki, Y. and Nagaya, M. and Nishimoto, K. and Ohnishi, K. and
Okumura, T. and Omori, K. and Perrott, Y. C. and Rattenbury, N.
and Saito, To and Skuljan, L. and Sullivan, D. J. and Suzuki, D.
and Suzuki, K. and Sweatman, W. L. and Takino, S. and Tristram, P.
J. and Wada, K. and Yock, P. C. M. and Szymanski, M. K. and
Kubiak, M. and Pietrzynski, G. and Soszynski, I. and Poleski, R.
and Ulaczyk, K. and Wyrzykowski, L. and Kozllowski, S. and
Pietrukowicz, P. and Albrow, M. D. and Bachelet, E. and Batista,
V. and Bennett, C. S. and Bowens-Rubin, R. and Brillant, S. and
Cassan, A. and Cole, A. and Corrales, E. and Coutures, Ch. and
Dieters, S. and Prester, D. Dominis and Donatowicz, J. and Fouque,
P. and Greenhill, J. and Kane, S. R. and Menzies, J. and Sahu, K.
C. and Wambsganss, J. and Williams, A. and Zub, M. and Allan, A.
and Bramich, D. M. and Browne, P. and Clay, N. and Fraser, S. and
Horne, K. and Kains, N. and Mottram, C. and Snodgrass, C. and
Steele, I. and Tsapras, Y. and Alsubai, K. A. and Bozza, V. and
Burgdorf, M. J. and Novati, S. Calchi and Dodds, P. and Dreizler,
S. and Finet, F. and Gerner, T. and Glitrup, M. and Grundahl, F.
and Hardis, S. and Harpsoe, K. and Hinse, T. C. and Hundertmark,
M. and Jorgensen, U. G. and Kerins, E. and Liebig, C. and Maier,
G. and Mancini, L. and Mathiasen, M. and Penny, M. T. and Proft,
S. and Rahvar, S. and Ricci, D. and Scarpetta, G. and Schaefer, S.
and Schoenebeck, F. and Skottfelt, J. and Surdej, J. and
Southworth, J. and Zimmer, F. and Collaboration, FUN and
Collaboration, MOA and Collaboration, OGLE and Collaboration,
PLANET and Collaboration, RoboNet and Consortium, MiNDSTEp",
affiliation = "{} and {} and {} and {} and {} and {} and {} and {} and {} and {}
and {} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{} and {} and {} and {} and {} and {} and {} and {} and {} and
{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Characterizing lenses and lensed stars of high-magnification
single-lens gravitational microlensing events with lenses passing
over source stars",
journal = "Astrophysical Journal",
year = "2012",
volume = "751",
number = "1",
pages = "41",
month = "May",
keywords = "bulge, gravitational lensing, micro, stellar atmosphere models,
galactic bulge, light curves, chemical evolution, dwarf,
photometry, planets, giant, signatures, systems.",
abstract = "We present the analysis of the light curves of nine
high-magnification single-lens gravitational microlensing events
with lenses passing over source stars, including
OGLE-2004-BLG-254, MOA-2007-BLG-176,
MOA-2007-BLG-233/OGLE-2007-BLG-302, MOA-2009-BLG-174,
MOA-2010-BLG-436, MOA-2011-BLG-093, MOA-2011-BLG-274,
OGLE-2011-BLG-0990/MOA-2011-BLG-300, and
OGLE-2011-BLG-1101/MOA-2011-BLG-325. For all of the events, we
measure the linear limb-darkening coefficients of the surface
brightness profile of source stars by measuring the deviation of
the light curves near the peak affected by the finite-source
effect. For seven events, we measure the Einstein radii and the
lens-source relative proper motions. Among them, five events are
found to have Einstein radii of less than 0.2 mas, making the
lenses very low mass star or brown dwarf candidates. For
MOA-2011-BLG-274, especially, the small Einstein radius of
theta(E) similar to 0.08 mas combined with the short timescale of
t(E) similar to 2.7 days suggests the possibility that the lens is
a free-floating planet. For MOA-2009-BLG-174, we measure the lens
parallax and thus uniquely determine the physical parameters of
the lens. We also find that the measured lens mass of similar to
0.84M(circle dot) is consistent with that of a star blended with
the source, suggesting that the blend is likely to be the lens.
Although we did not find planetary signals for any of the events,
we provide exclusion diagrams showing the confidence levels
excluding the existence of a planet as a function of the
separation and mass ratio.",
doi = "10.1088/0004-637X/751/1/41",
url = "http://dx.doi.org/10.1088/0004-637X/751/1/41",
issn = "0004-637X and 1538-4357",
targetfile = "Choi-AstropJ-0004-637X_751_1_41[1].pdf",
urlaccessdate = "03 maio 2024"
}