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Interpretation of a short-term anomaly in the gravitational microlensing event MOA-2012-BLG-486
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dc.contributor.author | Hwang, K.-H. | |
dc.contributor.author | Choi, J.-Y. | |
dc.contributor.author | Bond, I. A. | |
dc.contributor.author | Sumi, T. | |
dc.contributor.author | Han, C. | |
dc.contributor.author | Gaudi, B. S. | |
dc.contributor.author | Gould, A. | |
dc.contributor.author | Bozza, V. | |
dc.contributor.author | Beaulieu, J.-P. | |
dc.contributor.author | Tsapras, Y. | |
dc.contributor.author | Abe, F. | |
dc.contributor.author | Bennett, D. P. | |
dc.contributor.author | Botzler, C. S. | |
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. H. | |
dc.contributor.author | Masuda, K. | |
dc.contributor.author | Matsubara, Y. | |
dc.contributor.author | Muraki, Y. | |
dc.contributor.author | Namba, S. | |
dc.contributor.author | Ohnishi, K. | |
dc.contributor.author | Rattenbury, N. J. | |
dc.contributor.author | Saito, To. | |
dc.contributor.author | Sullivan, D. J. | |
dc.contributor.author | Sweatman, W. L. | |
dc.contributor.author | Suzuki, D. | |
dc.contributor.author | Tristram, P. J. | |
dc.contributor.author | Wada, K. | |
dc.contributor.author | Yamai, N. | |
dc.contributor.author | Yock, P. C. M. | |
dc.contributor.author | Yonehara, A. | |
dc.contributor.author | de Almeida, L. Andrade | |
dc.contributor.author | DePoy, D. L. | |
dc.contributor.author | Dong, Subo | |
dc.contributor.author | Jablonski, F. | |
dc.contributor.author | Jung, Y. K. | |
dc.contributor.author | Kavka, A. | |
dc.contributor.author | Lee, C.-U. | |
dc.contributor.author | Park, H. | |
dc.contributor.author | Pogge, R. W. | |
dc.contributor.author | Shin, I.-G. | |
dc.contributor.author | Yee, J. C. | |
dc.contributor.author | Albrow, M. D. | |
dc.contributor.author | Bachelet, E. | |
dc.contributor.author | Batista, V. | |
dc.contributor.author | Brillant, S. | |
dc.contributor.author | Caldwell, J. A. R. | |
dc.contributor.author | Cassan, A. | |
dc.contributor.author | Cole, A. | |
dc.contributor.author | Corrales, E. | |
dc.contributor.author | Coutures, Ch. | |
dc.contributor.author | Dieters, S. | |
dc.contributor.author | Dominis Prester, D. | |
dc.contributor.author | Donatowicz, J. | |
dc.contributor.author | Fouqué, P. | |
dc.contributor.author | Greenhill, J. | |
dc.contributor.author | Jørgensen, U. G. | |
dc.contributor.author | Kane, S. R. | |
dc.contributor.author | Kubas, D. | |
dc.contributor.author | Marquette, J.-B. | |
dc.contributor.author | Martin, R. | |
dc.contributor.author | Meintjes, P. | |
dc.contributor.author | Menzies, J. | |
dc.contributor.author | Pollard, K. R. | |
dc.contributor.author | Williams, A. | |
dc.contributor.author | Wouters, D. | |
dc.contributor.author | Bramich, D. M. | |
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, Noé | |
dc.contributor.author | Snodgrass, C. | |
dc.contributor.author | Steele, I. A. | |
dc.contributor.author | Street, R. A. | |
dc.date.accessioned | 2014-09-23T16:31:01Z | |
dc.date.available | 2014-09-23T16:31:01Z | |
dc.date.issued | 2013-11-20 | |
dc.identifier | 149345122 | |
dc.identifier | 12694161-d76d-42e0-8aa3-8928770ab9bc | |
dc.identifier | 84887853137 | |
dc.identifier.citation | Hwang , K-H , Choi , J-Y , Bond , I A , Sumi , T , Han , C , Gaudi , B S , Gould , A , Bozza , V , Beaulieu , J-P , Tsapras , Y , Abe , F , Bennett , D P , Botzler , C S , Chote , P , Freeman , M , Fukui , A , Fukunaga , D , Harris , P , Itow , Y , Koshimoto , N , Ling , C H , Masuda , K , Matsubara , Y , Muraki , Y , Namba , S , Ohnishi , K , Rattenbury , N J , Saito , T , Sullivan , D J , Sweatman , W L , Suzuki , D , Tristram , P J , Wada , K , Yamai , N , Yock , P C M , Yonehara , A , de Almeida , L A , DePoy , D L , Dong , S , Jablonski , F , Jung , Y K , Kavka , A , Lee , C-U , Park , H , Pogge , R W , Shin , I-G , Yee , J C , Albrow , M D , Bachelet , E , Batista , V , Brillant , S , Caldwell , J A R , Cassan , A , Cole , A , Corrales , E , Coutures , C , Dieters , S , Dominis Prester , D , Donatowicz , J , Fouqué , P , Greenhill , J , Jørgensen , U G , Kane , S R , Kubas , D , Marquette , J-B , Martin , R , Meintjes , P , Menzies , J , Pollard , K R , Williams , A , Wouters , D , Bramich , D M , Dominik , M , Horne , K , Browne , P , Hundertmark , M , Ipatov , S , Kains , N , Snodgrass , C , Steele , I A & Street , R A 2013 , ' Interpretation of a short-term anomaly in the gravitational microlensing event MOA-2012-BLG-486 ' , Astrophysical Journal , vol. 778 , no. 1 , 55 . https://doi.org/10.1088/0004-637X/778/1/55 | en |
dc.identifier.issn | 0004-637X | |
dc.identifier.other | BibCode: 2013ApJ...778...55H | |
dc.identifier.other | ORCID: /0000-0002-3202-0343/work/75996670 | |
dc.identifier.uri | https://hdl.handle.net/10023/5491 | |
dc.description | D.M.B., M.D., K.H., M.H., S.I., C.S., R.A.S., and Y.T. are supported by NPRP grant NPRP-09-476-1-78 from the Qatar National Research Fund (a member of Qatar Foundation). K.H. is supported by a Royal Society Leverhulme Senior Research Fellowship. | en |
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 clearly resolved. 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.format.extent | 6 | |
dc.format.extent | 786671 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astrophysical Journal | en |
dc.subject | Binaries: general | en |
dc.subject | Gravitational lensing: micro | en |
dc.subject | Planets and satellites: detection | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Interpretation of a short-term anomaly in the gravitational microlensing event MOA-2012-BLG-486 | en |
dc.type | Journal article | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | https://doi.org/10.1088/0004-637X/778/1/55 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | ST/K001515/1 | en |
dc.identifier.grantnumber | ST/J001651/1 | en |
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