Reanalyses of anomalous gravitational microlensing events in the ogle-iii early warning system database with combined data

© 2015. The American Astronomical Society. All rights reserved. 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...

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Main Authors:	Jeong, J., Park, H., Han, C., Gould, A., Udalski, A., Szymanski, M., Pietrzynski, G., Soszynski, I., Poleski, R., Ulaczyk, K., Wyrzykowski, Abe, F., Bennett, D., Bond, I., Botzler, C., Freeman, M., Fukui, A., Fukunaga, D., Itow, Y., Koshimoto, N., Masuda, K., Matsubara, Y., Muraki, Y., Namba, S., Ohnishi, K., Rattenbury, N., Saito, T., Sullivan, D., Sweatman, W., Sumi, T., Suzuki, D., Tristram, P., Tsurumi, N., Wada, K., Yamai, N., Yock, P., Yonehara, A., Albrow, M., Batista, V., Beaulieu, J., Caldwell, J., Cassan, A., Cole, A., Coutures, C., Dieters, S., Dominik, M., Prester, D., Donatowicz, J., Fouqué, P., Greenhill, J., Hoffman, M., Huber, M., Jorgensen, U., Kane, S., Kubas, D., Martin, R., Marquette, J., Menzies, J., Pitrou, C., Pollard, K., Sahu, K., Vinter, C., Wambsganss, J., Williams, Andrew, Allen, W., Bolt, G., Choi, J., Christie, G., Depoy, D., Drummond, J., Gaudi, B., Hwang, K., Jung, Y., Lee, C., Mallia, F., Maoz, D., Maury, A., McCormick, J., Monard, L., Moorhouse, D., Natusch, T., Ofek, E., Park, B., Pogge, R., Santallo, R., Shin, I., Thornley, G., Yee, J., Bramich, D., Burgdorf, M., Horne, K., Hundertmark, M., Kains, N., Snodgrass, C., Steele, I.
Format:	Journal Article
Published:	Institute of Physics Publishing 2015
Online Access:	http://hdl.handle.net/20.500.11937/72061

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author	Jeong, J. Park, H. Han, C. Gould, A. Udalski, A. Szymanski, M. Pietrzynski, G. Soszynski, I. Poleski, R. Ulaczyk, K. Wyrzykowski Abe, F. Bennett, D. Bond, I. Botzler, C. Freeman, M. Fukui, A. Fukunaga, D. Itow, Y. Koshimoto, N. Masuda, K. Matsubara, Y. Muraki, Y. Namba, S. Ohnishi, K. Rattenbury, N. Saito, T. Sullivan, D. Sweatman, W. Sumi, T. Suzuki, D. Tristram, P. Tsurumi, N. Wada, K. Yamai, N. Yock, P. Yonehara, A. Albrow, M. Batista, V. Beaulieu, J. Caldwell, J. Cassan, A. Cole, A. Coutures, C. Dieters, S. Dominik, M. Prester, D. Donatowicz, J. Fouqué, P. Greenhill, J. Hoffman, M. Huber, M. Jorgensen, U. Kane, S. Kubas, D. Martin, R. Marquette, J. Menzies, J. Pitrou, C. Pollard, K. Sahu, K. Vinter, C. Wambsganss, J. Williams, Andrew Allen, W. Bolt, G. Choi, J. Christie, G. Depoy, D. Drummond, J. Gaudi, B. Hwang, K. Jung, Y. Lee, C. Mallia, F. Maoz, D. Maury, A. McCormick, J. Monard, L. Moorhouse, D. Natusch, T. Ofek, E. Park, B. Pogge, R. Santallo, R. Shin, I. Thornley, G. Yee, J. Bramich, D. Burgdorf, M. Horne, K. Hundertmark, M. Kains, N. Snodgrass, C. Steele, I.
author_facet	Jeong, J. Park, H. Han, C. Gould, A. Udalski, A. Szymanski, M. Pietrzynski, G. Soszynski, I. Poleski, R. Ulaczyk, K. Wyrzykowski Abe, F. Bennett, D. Bond, I. Botzler, C. Freeman, M. Fukui, A. Fukunaga, D. Itow, Y. Koshimoto, N. Masuda, K. Matsubara, Y. Muraki, Y. Namba, S. Ohnishi, K. Rattenbury, N. Saito, T. Sullivan, D. Sweatman, W. Sumi, T. Suzuki, D. Tristram, P. Tsurumi, N. Wada, K. Yamai, N. Yock, P. Yonehara, A. Albrow, M. Batista, V. Beaulieu, J. Caldwell, J. Cassan, A. Cole, A. Coutures, C. Dieters, S. Dominik, M. Prester, D. Donatowicz, J. Fouqué, P. Greenhill, J. Hoffman, M. Huber, M. Jorgensen, U. Kane, S. Kubas, D. Martin, R. Marquette, J. Menzies, J. Pitrou, C. Pollard, K. Sahu, K. Vinter, C. Wambsganss, J. Williams, Andrew Allen, W. Bolt, G. Choi, J. Christie, G. Depoy, D. Drummond, J. Gaudi, B. Hwang, K. Jung, Y. Lee, C. Mallia, F. Maoz, D. Maury, A. McCormick, J. Monard, L. Moorhouse, D. Natusch, T. Ofek, E. Park, B. Pogge, R. Santallo, R. Shin, I. Thornley, G. Yee, J. Bramich, D. Burgdorf, M. Horne, K. Hundertmark, M. Kains, N. Snodgrass, C. Steele, I.
author_sort	Jeong, J.
building	Curtin Institutional Repository
collection	Online Access
description	© 2015. The American Astronomical Society. All rights reserved. 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.
first_indexed	2025-11-14T10:50:55Z
format	Journal Article
id	curtin-20.500.11937-72061
institution	Curtin University Malaysia
institution_category	Local University
last_indexed	2025-11-14T10:50:55Z
publishDate	2015
publisher	Institute of Physics Publishing
recordtype	eprints
repository_type	Digital Repository
spelling	curtin-20.500.11937-720612018-12-13T09:32:59Z 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. Pietrzynski, G. Soszynski, I. Poleski, R. Ulaczyk, K. Wyrzykowski Abe, F. Bennett, D. Bond, I. Botzler, C. Freeman, M. Fukui, A. Fukunaga, D. Itow, Y. Koshimoto, N. Masuda, K. Matsubara, Y. Muraki, Y. Namba, S. Ohnishi, K. Rattenbury, N. Saito, T. Sullivan, D. Sweatman, W. Sumi, T. Suzuki, D. Tristram, P. Tsurumi, N. Wada, K. Yamai, N. Yock, P. Yonehara, A. Albrow, M. Batista, V. Beaulieu, J. Caldwell, J. Cassan, A. Cole, A. Coutures, C. Dieters, S. Dominik, M. Prester, D. Donatowicz, J. Fouqué, P. Greenhill, J. Hoffman, M. Huber, M. Jorgensen, U. Kane, S. Kubas, D. Martin, R. Marquette, J. Menzies, J. Pitrou, C. Pollard, K. Sahu, K. Vinter, C. Wambsganss, J. Williams, Andrew Allen, W. Bolt, G. Choi, J. Christie, G. Depoy, D. Drummond, J. Gaudi, B. Hwang, K. Jung, Y. Lee, C. Mallia, F. Maoz, D. Maury, A. McCormick, J. Monard, L. Moorhouse, D. Natusch, T. Ofek, E. Park, B. Pogge, R. Santallo, R. Shin, I. Thornley, G. Yee, J. Bramich, D. Burgdorf, M. Horne, K. Hundertmark, M. Kains, N. Snodgrass, C. Steele, I. © 2015. The American Astronomical Society. All rights reserved. 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. 2015 Journal Article http://hdl.handle.net/20.500.11937/72061 10.1088/0004-637X/804/1/38 Institute of Physics Publishing restricted
spellingShingle	Jeong, J. Park, H. Han, C. Gould, A. Udalski, A. Szymanski, M. Pietrzynski, G. Soszynski, I. Poleski, R. Ulaczyk, K. Wyrzykowski Abe, F. Bennett, D. Bond, I. Botzler, C. Freeman, M. Fukui, A. Fukunaga, D. Itow, Y. Koshimoto, N. Masuda, K. Matsubara, Y. Muraki, Y. Namba, S. Ohnishi, K. Rattenbury, N. Saito, T. Sullivan, D. Sweatman, W. Sumi, T. Suzuki, D. Tristram, P. Tsurumi, N. Wada, K. Yamai, N. Yock, P. Yonehara, A. Albrow, M. Batista, V. Beaulieu, J. Caldwell, J. Cassan, A. Cole, A. Coutures, C. Dieters, S. Dominik, M. Prester, D. Donatowicz, J. Fouqué, P. Greenhill, J. Hoffman, M. Huber, M. Jorgensen, U. Kane, S. Kubas, D. Martin, R. Marquette, J. Menzies, J. Pitrou, C. Pollard, K. Sahu, K. Vinter, C. Wambsganss, J. Williams, Andrew Allen, W. Bolt, G. Choi, J. Christie, G. Depoy, D. Drummond, J. Gaudi, B. Hwang, K. Jung, Y. Lee, C. Mallia, F. Maoz, D. Maury, A. McCormick, J. Monard, L. Moorhouse, D. Natusch, T. Ofek, E. Park, B. Pogge, R. Santallo, R. Shin, I. Thornley, G. Yee, J. Bramich, D. Burgdorf, M. Horne, K. Hundertmark, M. Kains, N. Snodgrass, C. Steele, I. Reanalyses of anomalous gravitational microlensing events in the ogle-iii early warning system database with combined data
title	Reanalyses of anomalous gravitational microlensing events in the ogle-iii early warning system database with combined data
title_full	Reanalyses of anomalous gravitational microlensing events in the ogle-iii early warning system database with combined data
title_fullStr	Reanalyses of anomalous gravitational microlensing events in the ogle-iii early warning system database with combined data
title_full_unstemmed	Reanalyses of anomalous gravitational microlensing events in the ogle-iii early warning system database with combined data
title_short	Reanalyses of anomalous gravitational microlensing events in the ogle-iii early warning system database with combined data
title_sort	reanalyses of anomalous gravitational microlensing events in the ogle-iii early warning system database with combined data
url	http://hdl.handle.net/20.500.11937/72061

Reanalyses of anomalous gravitational microlensing events in the ogle-iii early warning system database with combined data

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