MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection

We analyze MOA-2010-BLG-311, a high magnification (Amax > 600) microlensing event with complete data coverage over the peak, making it very sensitive to planetary signals. We fit this event with both a point lens and a two-body lens model and find that the two-body lens model is a better fit...

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Main Authors:	Yee, J., Hung, L., Bond, I., Allen, W., Monard, L., Albrow, M., Fouque, P., Dominik, M., Tsapras, Y., Udalski, A., Gould, A., Zellem, R., Bos, M., Christie, G., DePoy, D., Dong, S., Drummond, J., Gaudi, B., Gorbikov, E., Han, C., Kaspi, S., Klein, N., Lee, C., Maoz, D., McCormick, J., Moorhouse, D., Natusch, T., Nola, M., Park, B., Pogge, R., Polishook, D., Shporer, A., Shvartzvald, Y., Skowron, J., Thornley, G., Abe, F., Bennett, D., Botzler, C., Chote, P., Freeman, M., Fukui, A., Furusawa, K., Harris, P., Itow, Y., Ling, C., Masuda, K., Matsubara, Y., Miyake, N., Ohnishi, K., Rattenbury, N., Saito, T., Sullivan, D., Sumi, T., Suzuki, D., Sweatman, W., Tristram, P., Wada, K., Yock, P., Szymanski, M., Soszynski, I., Kubiak, M., Poleski, R., Ulaczyk, K., Pietrzynski, G., Wyrzykowski, L., Bachelet, E., Batista, V., Beatty, T., Beaulieu, J., Bennett, C., Bowens-Rubin, R., Brillant, S., Caldwell, J., Cassan, A., Cole, A., Corrales, E., Coutures, C., Dieters, S., Dominis Prester, D., Donatowicz, J., Greenhill, J., Henderson, C., Kubas, D., Marquette, J., Martin, R., Menzies, J., Shappee, B., Williams, Andrew, Wouters, D., van Saders, J., Zub, M., Street, R., Horne, K., Bramich, D., Steele, I., Alsubai, K., Bozza, V., Browne, P., Burgdorf, M., Calchi Novati, S., Dodds, P., Finet, F., Gerner, T., Hardis, S., Harpsoe, K., Hessman, F., Hinse, T., Hundertmark, M., Jorgensen, U., Kains, N., Kerins, E., Liebig, C., Mancini, L., Mathiasen, M., Penny, M., Proft, S., Rahvar, S., Ricci, D., Sahu, K., Scarpetta, G., Schafer, S., Schonebeck, F., Snodgrass, C., Southworth, J., Surdej, J., Wambsganss, J.
Format:	Journal Article
Published:	Institute of Physics Publishing 2013
Subjects:	micro – planets and satellites: detection Online-only material color figure Galaxy bulge – gravitational lensing
Online Access:	http://hdl.handle.net/20.500.11937/42110

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author	Yee, J. Hung, L. Bond, I. Allen, W. Monard, L. Albrow, M. Fouque, P. Dominik, M. Tsapras, Y. Udalski, A. Gould, A. Zellem, R. Bos, M. Christie, G. DePoy, D. Dong, S. Drummond, J. Gaudi, B. Gorbikov, E. Han, C. Kaspi, S. Klein, N. Lee, C. Maoz, D. McCormick, J. Moorhouse, D. Natusch, T. Nola, M. Park, B. Pogge, R. Polishook, D. Shporer, A. Shvartzvald, Y. Skowron, J. Thornley, G. Abe, F. Bennett, D. Botzler, C. Chote, P. Freeman, M. Fukui, A. Furusawa, K. Harris, P. Itow, Y. Ling, C. Masuda, K. Matsubara, Y. Miyake, N. Ohnishi, K. Rattenbury, N. Saito, T. Sullivan, D. Sumi, T. Suzuki, D. Sweatman, W. Tristram, P. Wada, K. Yock, P. Szymanski, M. Soszynski, I. Kubiak, M. Poleski, R. Ulaczyk, K. Pietrzynski, G. Wyrzykowski, L. Bachelet, E. Batista, V. Beatty, T. Beaulieu, J. Bennett, C. Bowens-Rubin, R. Brillant, S. Caldwell, J. Cassan, A. Cole, A. Corrales, E. Coutures, C. Dieters, S. Dominis Prester, D. Donatowicz, J. Greenhill, J. Henderson, C. Kubas, D. Marquette, J. Martin, R. Menzies, J. Shappee, B. Williams, Andrew Wouters, D. van Saders, J. Zub, M. Street, R. Horne, K. Bramich, D. Steele, I. Alsubai, K. Bozza, V. Browne, P. Burgdorf, M. Calchi Novati, S. Dodds, P. Finet, F. Gerner, T. Hardis, S. Harpsoe, K. Hessman, F. Hinse, T. Hundertmark, M. Jorgensen, U. Kains, N. Kerins, E. Liebig, C. Mancini, L. Mathiasen, M. Penny, M. Proft, S. Rahvar, S. Ricci, D. Sahu, K. Scarpetta, G. Schafer, S. Schonebeck, F. Snodgrass, C. Southworth, J. Surdej, J. Wambsganss, J.
author_facet	Yee, J. Hung, L. Bond, I. Allen, W. Monard, L. Albrow, M. Fouque, P. Dominik, M. Tsapras, Y. Udalski, A. Gould, A. Zellem, R. Bos, M. Christie, G. DePoy, D. Dong, S. Drummond, J. Gaudi, B. Gorbikov, E. Han, C. Kaspi, S. Klein, N. Lee, C. Maoz, D. McCormick, J. Moorhouse, D. Natusch, T. Nola, M. Park, B. Pogge, R. Polishook, D. Shporer, A. Shvartzvald, Y. Skowron, J. Thornley, G. Abe, F. Bennett, D. Botzler, C. Chote, P. Freeman, M. Fukui, A. Furusawa, K. Harris, P. Itow, Y. Ling, C. Masuda, K. Matsubara, Y. Miyake, N. Ohnishi, K. Rattenbury, N. Saito, T. Sullivan, D. Sumi, T. Suzuki, D. Sweatman, W. Tristram, P. Wada, K. Yock, P. Szymanski, M. Soszynski, I. Kubiak, M. Poleski, R. Ulaczyk, K. Pietrzynski, G. Wyrzykowski, L. Bachelet, E. Batista, V. Beatty, T. Beaulieu, J. Bennett, C. Bowens-Rubin, R. Brillant, S. Caldwell, J. Cassan, A. Cole, A. Corrales, E. Coutures, C. Dieters, S. Dominis Prester, D. Donatowicz, J. Greenhill, J. Henderson, C. Kubas, D. Marquette, J. Martin, R. Menzies, J. Shappee, B. Williams, Andrew Wouters, D. van Saders, J. Zub, M. Street, R. Horne, K. Bramich, D. Steele, I. Alsubai, K. Bozza, V. Browne, P. Burgdorf, M. Calchi Novati, S. Dodds, P. Finet, F. Gerner, T. Hardis, S. Harpsoe, K. Hessman, F. Hinse, T. Hundertmark, M. Jorgensen, U. Kains, N. Kerins, E. Liebig, C. Mancini, L. Mathiasen, M. Penny, M. Proft, S. Rahvar, S. Ricci, D. Sahu, K. Scarpetta, G. Schafer, S. Schonebeck, F. Snodgrass, C. Southworth, J. Surdej, J. Wambsganss, J.
author_sort	Yee, J.
building	Curtin Institutional Repository
collection	Online Access
description	We analyze MOA-2010-BLG-311, a high magnification (Amax > 600) microlensing event with complete data coverage over the peak, making it very sensitive to planetary signals. We fit this event with both a point lens and a two-body lens model and find that the two-body lens model is a better fit but with only ??2 ~ 80. The preferred mass ratio between the lens star and its companion is q = 10-3.7±0.1, placing the candidate companion in the planetary regime. Despite the formal significance of the planet, we show that because of systematics in the data the evidence for a planetary companion to the lens is too tenuous to claim a secure detection. When combined with analyses of other high-magnification events, this event helps empirically define the threshold for reliable planet detection in high-magnification events, which remains an open question.
first_indexed	2025-11-14T09:10:29Z
format	Journal Article
id	curtin-20.500.11937-42110
institution	Curtin University Malaysia
institution_category	Local University
last_indexed	2025-11-14T09:10:29Z
publishDate	2013
publisher	Institute of Physics Publishing
recordtype	eprints
repository_type	Digital Repository
spelling	curtin-20.500.11937-421102023-02-22T06:24:24Z MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection Yee, J. Hung, L. Bond, I. Allen, W. Monard, L. Albrow, M. Fouque, P. Dominik, M. Tsapras, Y. Udalski, A. Gould, A. Zellem, R. Bos, M. Christie, G. DePoy, D. Dong, S. Drummond, J. Gaudi, B. Gorbikov, E. Han, C. Kaspi, S. Klein, N. Lee, C. Maoz, D. McCormick, J. Moorhouse, D. Natusch, T. Nola, M. Park, B. Pogge, R. Polishook, D. Shporer, A. Shvartzvald, Y. Skowron, J. Thornley, G. Abe, F. Bennett, D. Botzler, C. Chote, P. Freeman, M. Fukui, A. Furusawa, K. Harris, P. Itow, Y. Ling, C. Masuda, K. Matsubara, Y. Miyake, N. Ohnishi, K. Rattenbury, N. Saito, T. Sullivan, D. Sumi, T. Suzuki, D. Sweatman, W. Tristram, P. Wada, K. Yock, P. Szymanski, M. Soszynski, I. Kubiak, M. Poleski, R. Ulaczyk, K. Pietrzynski, G. Wyrzykowski, L. Bachelet, E. Batista, V. Beatty, T. Beaulieu, J. Bennett, C. Bowens-Rubin, R. Brillant, S. Caldwell, J. Cassan, A. Cole, A. Corrales, E. Coutures, C. Dieters, S. Dominis Prester, D. Donatowicz, J. Greenhill, J. Henderson, C. Kubas, D. Marquette, J. Martin, R. Menzies, J. Shappee, B. Williams, Andrew Wouters, D. van Saders, J. Zub, M. Street, R. Horne, K. Bramich, D. Steele, I. Alsubai, K. Bozza, V. Browne, P. Burgdorf, M. Calchi Novati, S. Dodds, P. Finet, F. Gerner, T. Hardis, S. Harpsoe, K. Hessman, F. Hinse, T. Hundertmark, M. Jorgensen, U. Kains, N. Kerins, E. Liebig, C. Mancini, L. Mathiasen, M. Penny, M. Proft, S. Rahvar, S. Ricci, D. Sahu, K. Scarpetta, G. Schafer, S. Schonebeck, F. Snodgrass, C. Southworth, J. Surdej, J. Wambsganss, J. micro – planets and satellites: detection Online-only material color figure Galaxy bulge – gravitational lensing We analyze MOA-2010-BLG-311, a high magnification (Amax > 600) microlensing event with complete data coverage over the peak, making it very sensitive to planetary signals. We fit this event with both a point lens and a two-body lens model and find that the two-body lens model is a better fit but with only ??2 ~ 80. The preferred mass ratio between the lens star and its companion is q = 10-3.7±0.1, placing the candidate companion in the planetary regime. Despite the formal significance of the planet, we show that because of systematics in the data the evidence for a planetary companion to the lens is too tenuous to claim a secure detection. When combined with analyses of other high-magnification events, this event helps empirically define the threshold for reliable planet detection in high-magnification events, which remains an open question. 2013 Journal Article http://hdl.handle.net/20.500.11937/42110 10.1088/0004-637X/769/1/77 Institute of Physics Publishing unknown
spellingShingle	micro – planets and satellites: detection Online-only material color figure Galaxy bulge – gravitational lensing Yee, J. Hung, L. Bond, I. Allen, W. Monard, L. Albrow, M. Fouque, P. Dominik, M. Tsapras, Y. Udalski, A. Gould, A. Zellem, R. Bos, M. Christie, G. DePoy, D. Dong, S. Drummond, J. Gaudi, B. Gorbikov, E. Han, C. Kaspi, S. Klein, N. Lee, C. Maoz, D. McCormick, J. Moorhouse, D. Natusch, T. Nola, M. Park, B. Pogge, R. Polishook, D. Shporer, A. Shvartzvald, Y. Skowron, J. Thornley, G. Abe, F. Bennett, D. Botzler, C. Chote, P. Freeman, M. Fukui, A. Furusawa, K. Harris, P. Itow, Y. Ling, C. Masuda, K. Matsubara, Y. Miyake, N. Ohnishi, K. Rattenbury, N. Saito, T. Sullivan, D. Sumi, T. Suzuki, D. Sweatman, W. Tristram, P. Wada, K. Yock, P. Szymanski, M. Soszynski, I. Kubiak, M. Poleski, R. Ulaczyk, K. Pietrzynski, G. Wyrzykowski, L. Bachelet, E. Batista, V. Beatty, T. Beaulieu, J. Bennett, C. Bowens-Rubin, R. Brillant, S. Caldwell, J. Cassan, A. Cole, A. Corrales, E. Coutures, C. Dieters, S. Dominis Prester, D. Donatowicz, J. Greenhill, J. Henderson, C. Kubas, D. Marquette, J. Martin, R. Menzies, J. Shappee, B. Williams, Andrew Wouters, D. van Saders, J. Zub, M. Street, R. Horne, K. Bramich, D. Steele, I. Alsubai, K. Bozza, V. Browne, P. Burgdorf, M. Calchi Novati, S. Dodds, P. Finet, F. Gerner, T. Hardis, S. Harpsoe, K. Hessman, F. Hinse, T. Hundertmark, M. Jorgensen, U. Kains, N. Kerins, E. Liebig, C. Mancini, L. Mathiasen, M. Penny, M. Proft, S. Rahvar, S. Ricci, D. Sahu, K. Scarpetta, G. Schafer, S. Schonebeck, F. Snodgrass, C. Southworth, J. Surdej, J. Wambsganss, J. MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection
title	MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection
title_full	MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection
title_fullStr	MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection
title_full_unstemmed	MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection
title_short	MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection
title_sort	moa-2010-blg-311: a planetary candidate below the threshold of reliable detection
topic	micro – planets and satellites: detection Online-only material color figure Galaxy bulge – gravitational lensing
url	http://hdl.handle.net/20.500.11937/42110

MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection

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