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Verfasst von:Jeong, Junu [VerfasserIn]   i
 Wambsganß, Joachim [VerfasserIn]   i
Titel:Reanalyses of anomalous gravitational microlensing events in the OGLE-III early warning system database with combined data
Verf.angabe:J. Jeong, H. Park, C. Han, A. Gould, A. Udalski, M.K. Szymański, G. Pietrzyński, I. Soszyński, R. Poleski, K. Ulaczyk, \L Wyrzykowski, (The OGLE Collaboration), F. Abe, D.P. Bennett, I.A. Bond, C.S. Botzler, M. Freeman, A. Fukui, D. Fukunaga, Y. Itow, N. Koshimoto, K. Masuda, Y. Matsubara, Y. Muraki, S. Namba, K. Ohnishi, N.J. Rattenbury, To Saito, D.J. Sullivan, W.L. Sweatman, T. Sumi, D. Suzuki, P.J. Tristram, N. Tsurumi, K. Wada, N. Yamai, P.C.M. Yock, A. Yonehara, (The MOA Collaboration), M.D. Albrow, V. Batista, J.-P. Beaulieu, J.A.R. Caldwell, A. Cassan, A. Cole, C. Coutures, S. Dieters, M. Dominik, D. Dominis Prester, J. Donatowicz, P. Fouqué, J. Greenhill, M. Hoffman, M. Huber, U.G. Jørgensen, S.R. Kane, D. Kubas, R. Martin, J.-B. Marquette, J. Menzies, C. Pitrou, K. Pollard, K.C. Sahu, C. Vinter, J. Wambsganss, A. Williams, (The PLANET Collaboration), W. Allen, G. Bolt, J.-Y. Choi, G.W. Christie, D.L. DePoy, J. Drummond, B.S. Gaudi, K.-H. Hwang, Y.K. Jung, C.-U. Lee, F. Mallia, D. Maoz, A. Maury, J. McCormick, L.A.G. Monard, D. Moorhouse, T. Natusch, E.O. Ofek, B.-G. Park, R.W. Pogge, R. Santallo, I.-G. Shin, G. Thornley, J.C. Yee, (The [mu]FUN Collaboration), D.M. Bramich, M. Burgdorf, K. Horne, M. Hundertmark, N. Kains, C. Snodgrass, I. Steele, R. Street, Y. Tsapras, (The RoboNet Collaboration)
E-Jahr:2015
Jahr:2015 April 28
Umfang:11 S.
Fussnoten:Gesehen am 09.06.2020
Titel Quelle:Enthalten in: The astrophysical journal / 1
Ort Quelle:London : Institute of Physics Publ., 1996
Jahr Quelle:2015
Band/Heft Quelle:804(2015,1), Artikel-Nummer 38, 11 Seiten
ISSN Quelle:1538-4357
Abstract:We reanalyze microlensing events in the published list of anomalous events that were observed from the Optical Gravitational Lensing Experiment (OGLE) lensing survey conducted during the 2004-2008 period. In order to check the existence of possible degenerate solutions and extract extra information, we conduct analyses based on combined data from other survey and follow-up observation and consider higher-order effects. Among the analyzed events, we present analyses of eight events for which either new solutions are identified or additional information is obtained. We find that the previous binary-source interpretations of five events are better interpreted by binary-lens models. These events include OGLE-2006-BLG-238, OGLE-2007-BLG-159, OGLE-2007-BLG-491, OGLE-2008-BLG-143, and OGLE-2008-BLG-210. With additional data covering caustic crossings, we detect finite-source effects for six events including OGLE-2006-BLG-215, OGLE-2006-BLG-238, OGLE-2006-BLG-450, OGLE-2008-BLG-143, OGLE-2008-BLG-210, and OGLE-2008-BLG-513. Among them, we are able to measure the Einstein radii of three events for which multi-band data are available. These events are OGLE-2006-BLG-238, OGLE-2008-BLG-210, and OGLE-2008-BLG-513. For OGLE-2008-BLG-143, we detect higher-order effects induced by the changes of the observer’s position caused by the orbital motion of the Earth around the Sun. In addition, we present degenerate solutions resulting from the known close/wide or ecliptic degeneracy. Finally, we note that the masses of the binary companions of the lenses of OGLE-2006-BLG-450 and OGLE-2008-BLG-210 are in the brown-dwarf regime.
DOI:doi:10.1088/0004-637X/804/1/38
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1088/0004-637X/804/1/38
 DOI: https://doi.org/10.1088/0004-637X/804/1/38
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1700196340
Verknüpfungen:→ Zeitschrift

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