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  Reanalyses of Anomalous Gravitational Microlensing Events in the OGLE-III Early Warning System Database with Combined Data

Jeong, J., Park, H., Han, C., Gould, A., Udalski, A., Szymanski, M. K., et al. (2015). Reanalyses of Anomalous Gravitational Microlensing Events in the OGLE-III Early Warning System Database with Combined Data. The Astrophysical Journal, 804(1): 38. doi:10.1088/0004-637X/804/1/38.

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Jeong, J., Author
Park, H., Author
Han, C., Author
Gould, A., Author
Udalski, A., Author
Szymanski, M. K., Author
Pietrzynski, G., Author
Soszynski, I., Author
Poleski, R., Author
Ulaczyk, K., Author
Wyrzykowski, L., Author
Abe, F., Author
Bennett, D. P., Author
Bond, I. A., Author
Botzler, C. S., Author
Freeman, M., Author
Fukui, A., Author
Fukunaga, D., Author
Itow, Y., Author
Koshimoto, N., Author
Masuda, K., AuthorMatsubara, Y., AuthorMuraki, Y., AuthorNamba, S., AuthorOhnishi, K., AuthorRattenbury, N. J., AuthorSaito, T., AuthorSullivan, D. J., AuthorSweatman, W. L., AuthorSumi, T., AuthorSuzuki, D., AuthorTristram, P. J., AuthorTsurumi, N., AuthorWada, K., AuthorYamai, N., AuthorYock, P. C. M., AuthorYonehara, A., AuthorAlbrow, M. D., AuthorBatista, V., AuthorBeaulieu, J.-P., AuthorCaldwell, J. A. R., AuthorCassan, A., AuthorCole, A., AuthorCoutures, C., AuthorDieters, S., AuthorDominik, M., AuthorPrester, D. Dominis, AuthorDonatowicz, J., AuthorFouque, P., AuthorGreenhill, J., AuthorHoffman, M., AuthorHuber, M., AuthorJorgensen, U. G., AuthorKane, S. R., AuthorKubas, D., AuthorMartin, R., AuthorMarquette, J.-B., AuthorMenzies, J., AuthorPitrou, C., AuthorPollard, K., AuthorSahu, K. C., AuthorVinter, C., AuthorWambsganss, J., AuthorWilliams, A., AuthorAllen, W., AuthorBolt, G., AuthorChoi, J.-Y., AuthorChristie, G. W., AuthorDePoy, D. L., AuthorDrummond, J., AuthorGaudi, B. S., AuthorHwang, K.-H., AuthorJung, Y. K., AuthorLee, C.-U., AuthorMallia, F., AuthorMaoz, D., AuthorMaury, A., AuthorMcCormick, J., AuthorMonard, L. A. G., AuthorMoorhouse, D., AuthorNatusch, T., AuthorOfek, E. O., AuthorPark, B.-G., AuthorPogge, R. W., AuthorSantallo, R., AuthorShin, I.-G., AuthorThornley, G., AuthorYee, J. C., AuthorBramich, D. M., AuthorBurgdorf, M., AuthorHorne, K., AuthorHundertmark, M., AuthorKains, N., AuthorSnodgrass, C.1, Author              Steele, I., AuthorStreet, R., AuthorTsapras, Y., AuthorThe OGLE Collaboration, Author               more..
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              


Free keywords: -
 MPIS_GROUPS: Planets and Comets
 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.


Language(s): eng - English
 Dates: 2015
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1088/0004-637X/804/1/38
BibTex Citekey: Jeong:2015-283
 Degree: -



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Title: The Astrophysical Journal
Source Genre: Journal
Publ. Info: Chicago, IL : University of Chicago Press for the American Astronomical Society
Pages: - Volume / Issue: 804 (1) Sequence Number: 38 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_3