@Article{ShinHCUSGBDFHSKSPPUPKSWABBBCFFFIKLMMMMOORSSSSSTTWYBSSSTABBNDDFGGHHHHHJJKKLLLMMPRRSSSSTWWABCDDGHJLMMMNNPPTTYABBBCCCCDPDGKMMS:2012:ChLoBi,
author = "Shin, I. -G. and Han, C. and Choi, J. -Y. and Udalski, A. and
Sumi, T. and Gould, A. and Bozza, V. and Dominik, M. and
Fouqu{\'e}, P. and Horne, K. and Szyma ski, M. K. and Kubiak, M.
and Soszy ski, I. and Pietrzy ski, G. and Poleski, R. and Ulaczyk,
K. and Pietrukowicz, P. and Koz owski, S. and Skowron, J. and
Wyrzykowski, . and Abe, F. and Bennett, D. P. and Bond, I. A. and
Botzler, C. S. and Chote, P. and Freeman, M. and Fukui, A. and
Furusawa, K. and Itow, Y. and Kobara, S. and Ling, C. H. and
Masuda, K. and Matsubara, Y. and Miyake, N. and Muraki, Y. and
Ohmori, K. and Ohnishi, K. and Rattenbury, N. J. and Saito, To.
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 Bramich, D. M. and Snodgrass, C. and Steele, I. A. and
Street, R. A. and Tsapras, Y. and Alsubai, K. A. and Browne, P.
and Burgdorf, M. J. and Novati, S. Calchi and Dodds, P. and
Dreizler, S. and Fang, X. -S. and Grundahl, F. and Gu, C. -H. and
Hardis, S. and Harps e, K. and Hinse, T. C. and Hornstrup, A. and
Hundertmark, M. and Jessen-Hansen, J. and J rgensen, U. G. and
Kains, N. and Kerins, E. and Liebig, C. and Lund, M. and
Lunkkvist, M. and Mancini, L. and Mathiasen, M. and Penny, M. T.
and Rahvar, S. and Ricci, D. and Scarpetta, G. and Skottfelt, J.
and Southworth, J. and Surdej, J. and Tregloan-Reed, J. and
Wambsganss, J. and Wertz, O. and Almeida, Leonardo Andrade de and
Batista, V. and Christie, G. and Depoy, D. L. and Dong, Subo and
Gaudi, B. S. and Henderson, C. and Jablonski, Francisco and Lee,
C. -U. and McCormick, J. and McGregor, D. and Moorhouse, D. and
Natusch, T. and Ngan, H. and Park, S. -Y. and Pogge, R. W. and
Tan, T. -G. and Thornley, G. and Yee, J. C. and Albrow, M. D. and
Bachelet, E. and Beaulieu, J. -P. and Brillant, S. and Cassan, A.
and Cole, A. A. and Corrales, E. and Coutures, C. and Dieters, S.
and Prester, D. Dominis and Donatowicz, J. and Greenhill, J. and
Kubas, D. and Marquette, J. -B. and Menzies, J. W. and Sahu, K. C.
and Zub and {} and M.",
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{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Characterizing low-mass binaries from observation of
long-timescale caustic-crossing gravitational microlensing
events",
journal = "Astrophysical Journal",
year = "2012",
volume = "755",
number = "2",
pages = "91 (10pp)",
month = "Aug.",
keywords = "gravitational microlensing, binaries.",
abstract = "Despite the astrophysical importance of binary star systems,
detections are limited to those located in small ranges of
separations, distances, and masses and thus it is necessary to use
a variety of observational techniques for a complete view of
stellar multiplicity across a broad range of physical parameters.
In this paper, we report the detections and measurements of two
binaries discovered from observations of microlensing events
MOA-2011-BLG-090 and OGLE-2011-BLG-0417. Determinations of the
binary masses are possible by simultaneously measuring the
Einstein radius and the lens parallax. The measured masses of the
binary components are 0.43M and 0.39M for MOA-2011-BLG-090 and
0.57M and 0.17M for OGLE-2011-BLG-0417 and thus both lens
components of MOA-2011-BLG-090 and one component of
OGLE-2011-BLG-0417 are M dwarfs, demonstrating the usefulness of
microlensing in detecting binaries composed of low-mass
components. From modeling of the light curves considering full
Keplerian motion of the lens, we also measure the orbital
parameters of the binaries. The blended light of
OGLE-2011-BLG-0417 comes very likely from the lens itself, making
it possible to check the microlensing orbital solution by
follow-up radial-velocity observation. For both events, the
caustic-crossing parts of the light curves, which are critical for
determining the physical lens parameters, were resolved by
high-cadence survey observations and thus it is expected that the
number of microlensing binaries with measured physical parameters
will increase in the future.",
doi = "10.1088/0004-637X/755/2/91",
url = "http://dx.doi.org/10.1088/0004-637X/755/2/91",
issn = "0004-637X and 1538-4357",
label = "lattes: 7812463045514059 86
ShinHCUSGBDFHSKSPPUPKSWABBBCFFFIKLMMMMOORSSSSSTTWYBSSSTABBNDDFGGHHHHHJJKKLLLMMPRRSSSSTWWABCDDGHJLMMMNNPPTTYABBBCCCCDPDGKMMSZ:2012:CHLOBI",
language = "pt",
targetfile = "0004-637X_755_2_91.pdf",
urlaccessdate = "30 abr. 2024"
}