Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
OGLE-2005-BLG-018: Characterization of full physical and orbital parameters of a gravitational binary lens
Astrophysical Journal, Volume 735, No. 2, Article 85, Year 2011
Notification
URL copied to clipboard!
Description
We present the result of the analysis of the gravitational binary-lensing event OGLE-2005-BLG-018. The light curve of the event is characterized by two adjacent strong features and a single weak feature separated from the strong features. The light curve exhibits noticeable deviations from the best-fit model based on standard binary parameters. To explain the deviation, we test models including various higher-order effects of the motions of the observer, source, and lens. From this, we find that it is necessary to account for the orbital motion of the lens in describing the light curve. From modeling the light curve considering the parallax effect and Keplerian orbital motion, we are able to not only measure the physical parameters but also to find a complete orbital solution of the lens system. It is found that the event was produced by a binary lens located in the Galactic bulge with a distance of 6.7 0.3 kpc from the Earth. The individual lens components with masses 0.9 0.3 M and 0.5 0.1 M ⊙ are separated with a semi-major axis of a = 2.5 1.0 AU and orbiting each other with a period P = 3.1 1.3 yr. This event demonstrates that it is possible to extract detailed information about binary lens systems from well-resolved lensing light curves. © 2011. The American Astronomical Society. All rights reserved..
Authors & Co-Authors
Shin, In-gu
Unknown Affiliation
Udalski, Andrzej
Unknown Affiliation
Han, Cheongho
Unknown Affiliation
Gould, Andrew P.
Unknown Affiliation
Dominik, Martin
Unknown Affiliation
Fouqué, Pascal
Unknown Affiliation
Kubiak, Marcin
Unknown Affiliation
Szymánski, Michał K.
Unknown Affiliation
Pietrzyńki, G.
Unknown Affiliation
Soszyński, Igor
Unknown Affiliation
Ulaczyk, Krzysztof
Unknown Affiliation
Wyrzykowski, Łukasz
Unknown Affiliation
DePoy, Darren L.
Unknown Affiliation
Dong, Subo
Unknown Affiliation
Gaudi, B. Scott
Unknown Affiliation
Lee, Chung-uk
Unknown Affiliation
Park, Byeong-gon
Unknown Affiliation
Pogge, Richard W.
Unknown Affiliation
Albrow, Michael D.
Unknown Affiliation
Allan, Alasdair
Unknown Affiliation
Beaulieu, Jean Philippe H.
Unknown Affiliation
Bennett, David P.
Unknown Affiliation
Bode, Michael F.
Unknown Affiliation
Bramich, Daniel M.
Unknown Affiliation
Brillant, Stéphanie
Unknown Affiliation
Burgdorf, Martin J.
Unknown Affiliation
Calitz, H.
Unknown Affiliation
Cassan, Arnaud
Unknown Affiliation
Cook, Kem H.
Unknown Affiliation
Corrales, E.
Unknown Affiliation
Coutures, Christian
Unknown Affiliation
Desort, N.
Unknown Affiliation
Dieters, Stefan W.B.
Unknown Affiliation
Dominis-Prester, Dijana
Unknown Affiliation
Donatowicz, J.
Unknown Affiliation
Fraser, Stephen N.
Unknown Affiliation
Greenhill, John G.
Unknown Affiliation
Hill, Kym M.
Unknown Affiliation
Hoffman, Matie J.H.
Unknown Affiliation
Hörne, Keith D.
Unknown Affiliation
Jörgensen, Uffe Gråe
Unknown Affiliation
Kane, Stephen R.
Unknown Affiliation
Kubas, Daniel
Unknown Affiliation
Marquette, Jean Baptiste
Unknown Affiliation
Martin, Ralph
Unknown Affiliation
Meintjes, Pieter J.
Unknown Affiliation
Menzies, John W.
Unknown Affiliation
Mottram, Christopher J.
Unknown Affiliation
Naylor, Tim T.
Unknown Affiliation
Pollard, Karen R.
Unknown Affiliation
Sahu, Kailash C.
Unknown Affiliation
Snodgrass, Colin
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
Statistics
Citations: 57
Authors: 57
Affiliations: 33
Identifiers
Doi:
10.1088/0004-637X/735/2/85
ISSN:
0004637X
e-ISSN:
15384357