Interpretation of a short-term anomaly in the gravitational microlensing event MOA-2012-BLG-486
dc.contributor.author | Hwang, K. | |
dc.contributor.author | Choi, J. | |
dc.contributor.author | Bond, I. | |
dc.contributor.author | Sumi, T. | |
dc.contributor.author | Han, C. | |
dc.contributor.author | Gaudi, B. | |
dc.contributor.author | Gould, A. | |
dc.contributor.author | Bozza, V. | |
dc.contributor.author | Beaulieu, J. | |
dc.contributor.author | Tsapras, Y. | |
dc.contributor.author | Abe, F. | |
dc.contributor.author | Bennett, D. | |
dc.contributor.author | Botzler, C. | |
dc.contributor.author | Chote, P. | |
dc.contributor.author | Freeman, M. | |
dc.contributor.author | Fukui, A. | |
dc.contributor.author | Fukunaga, D. | |
dc.contributor.author | Harris, P. | |
dc.contributor.author | Itow, Y. | |
dc.contributor.author | Koshimoto, N. | |
dc.contributor.author | Ling, C. | |
dc.contributor.author | Masuda, K. | |
dc.contributor.author | Matsubara, M. | |
dc.contributor.author | Muraki, Y. | |
dc.contributor.author | Namba, S. | |
dc.contributor.author | Ohnishi, K. | |
dc.contributor.author | Rattenbury, N. | |
dc.contributor.author | Saito, T. | |
dc.contributor.author | Sullivan, D. | |
dc.contributor.author | Sweatman, W. | |
dc.contributor.author | Suzuki, D. | |
dc.contributor.author | Tristram, P. | |
dc.contributor.author | Wada, K. | |
dc.contributor.author | Yamai, N. | |
dc.contributor.author | Yock, P. | |
dc.contributor.author | Yonehara, A. | |
dc.contributor.author | Andrade de Almeida, L. | |
dc.contributor.author | DePoy, D. | |
dc.contributor.author | Dong, S. | |
dc.contributor.author | Jablonski, F. | |
dc.contributor.author | Jung, Y. | |
dc.contributor.author | Kavka, A. | |
dc.contributor.author | Lee, C. | |
dc.contributor.author | Park, H. | |
dc.contributor.author | Pogge, R. | |
dc.contributor.author | Shin, I. | |
dc.contributor.author | Yee, J. | |
dc.contributor.author | Albrow, M. | |
dc.contributor.author | Bachelet, E. | |
dc.contributor.author | Batista, V. | |
dc.contributor.author | Brillant, S. | |
dc.contributor.author | Caldwell, J. | |
dc.contributor.author | Cassan, A. | |
dc.contributor.author | Cole, A. | |
dc.contributor.author | Corrales, E. | |
dc.contributor.author | Coutures, C. | |
dc.contributor.author | Dieters, S. | |
dc.contributor.author | Dominis Prester, D. | |
dc.contributor.author | Donatowicz, J. | |
dc.contributor.author | Fouque, P. | |
dc.contributor.author | Greenhill, J. | |
dc.contributor.author | Jorgensen, U. | |
dc.contributor.author | Kane, S. | |
dc.contributor.author | Kubas, D. | |
dc.contributor.author | Marquette, J. | |
dc.contributor.author | Martin, R. | |
dc.contributor.author | Meintjes, P. | |
dc.contributor.author | Menzies, J. | |
dc.contributor.author | Pollard, K. | |
dc.contributor.author | Williams, Andrew | |
dc.contributor.author | Wouters, D. | |
dc.contributor.author | Bramich, D. | |
dc.contributor.author | Dominik, M. | |
dc.contributor.author | Horne, K. | |
dc.contributor.author | Browne, P. | |
dc.contributor.author | Hundertmark, M. | |
dc.contributor.author | Ipatov, S. | |
dc.contributor.author | Kains, N. | |
dc.contributor.author | Snodgrass, C. | |
dc.contributor.author | Steele, I. | |
dc.contributor.author | Street, R. | |
dc.date.accessioned | 2017-01-30T11:41:26Z | |
dc.date.available | 2017-01-30T11:41:26Z | |
dc.date.created | 2014-11-19T01:13:48Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Hwang, K. and Choi, J. and Bond, I. and Sumi, T. and Han, C. and Gaudi, B. and Gould, A. et al. 2013. Interpretation of a short-term anomaly in the gravitational microlensing event MOA-2012-BLG-486. The Astrophysical Journal. 778. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/14093 | |
dc.description.abstract |
A planetary microlensing signal is generally characterized by a short-term perturbation to the standard single lensing light curve. A subset of binary-source events can produce perturbations that mimic planetary signals, thereby introducing an ambiguity between the planetary and binary-source interpretations. In this paper, we present the analysis of the microlensing event MOA-2012-BLG-486, for which the light curve exhibits a short-lived perturbation. Routine modeling not considering data taken in different passbands yields a best-fit planetary model that is slightly preferred over the best-fit binary-source model. However, when allowed for a change in the color during the perturbation, we find that the binary-source model yields a significantly better fit and thus the degeneracy is clearlyresolved. This event not only signifies the importance of considering various interpretations of short-term anomalies, but also demonstrates the importance of multi-band data for checking the possibility of false-positive planetary signals. | |
dc.publisher | Institute of Physics Publishing | |
dc.relation.uri | http://iopscience.iop.org/0004-637X/778/1/55/pdf/0004-637X_778_1_55.pdf | |
dc.subject | color figures | |
dc.subject | binaries | |
dc.subject | detection Online-only material | |
dc.subject | micro – planets and satellites | |
dc.subject | general – gravitational lensing | |
dc.title | Interpretation of a short-term anomaly in the gravitational microlensing event MOA-2012-BLG-486 | |
dc.type | Journal Article | |
dcterms.source.volume | 778 | |
dcterms.source.issn | 0004-637X | |
dcterms.source.title | The Astrophysical Journal | |
curtin.accessStatus | Fulltext not available |