MOA-2010-BLG-311

A planetary candidate below the threshold of reliable detection

J. C. Yee, L. W. Hung, I. A. Bond, W. Allen, L. A G Monard, M. D. Albrow, P. Fouqué, M. Dominik, Y. Tsapras, A. Udalski, A. Gould, R. Zellem, M. Bos, G. W. Christie, D. L. Depoy, Subo Dong, J. Drummond, B. S. Gaudi, E. Gorbikov, C. Han & 106 others S. Kaspi, N. Klein, C. U. Lee, D. Maoz, J. McCormick, D. Moorhouse, T. Natusch, M. Nola, B. G. Park, R. W. Pogge, D. Polishook, A. Shporer, Y. Shvartzvald, J. Skowron, G. Thornley, F. Abe, D. P. Bennett, C. S. Botzler, P. Chote, M. Freeman, A. Fukui, K. Furusawa, P. Harris, Y. Itow, C. H. Ling, K. Masuda, Y. Matsubara, N. Miyake, K. Ohnishi, N. J. Rattenbury, To Saito, D. J. Sullivan, T. Sumi, D. Suzuki, W. L. Sweatman, P. J. Tristram, K. Wada, P. C M Yock, M. K. Szymański, I. Soszyński, M. Kubiak, R. Poleski, K. Ulaczyk, G. Pietrzyński, Wyrzykowski, E. Bachelet, V. Batista, T. G. Beatty, J. P. Beaulieu, C. S. Bennett, R. Bowens-Rubin, S. Brillant, J. A R Caldwell, A. Cassan, A. A. Cole, E. Corrales, C. Coutures, S. Dieters, D. Dominis Prester, J. Donatowicz, J. Greenhill, C. B. Henderson, D. Kubas, J. B. Marquette, R. Martin, J. W. Menzies, B. Shappee, A. Williams, D. Wouters, J. Van Saders, M. Zub, R. A. Street, K. Horne, D. M. Bramich, I. A. Steele, Khalid Al-Subai, V. Bozza, P. Browne, M. J. Burgdorf, S. Calchi Novati, P. Dodds, F. Finet, T. Gerner, S. Hardis, K. Harpsøe, F. V. Hessman, T. C. Hinse, M. Hundertmark, U. G. Jørgensen, N. Kains, E. Kerins, C. Liebig, L. Mancini, M. Mathiasen, M. T. Penny, S. Proft, S. Rahvar, D. Ricci, K. C. Sahu, G. Scarpetta, S. Schäfer, F. Schönebeck, C. Snodgrass, J. Southworth, J. Surdej, J. Wambsganss

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We analyze MOA-2010-BLG-311, a high magnification (A max > 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 Δχ2 ∼ 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.

Original languageEnglish
Article number77
JournalAstrophysical Journal
Volume769
Issue number1
DOIs
Publication statusPublished - 20 May 2013

Fingerprint

planet
lenses
magnification
thresholds
planet detection
mass ratios
planets
detection
stars

Keywords

  • Galaxy: bulge
  • gravitational lensing: micro
  • planets and satellites: detection

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Yee, J. C., Hung, L. W., Bond, I. A., Allen, W., Monard, L. A. G., Albrow, M. D., ... Wambsganss, J. (2013). MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection. Astrophysical Journal, 769(1), [77]. https://doi.org/10.1088/0004-637X/769/1/77

MOA-2010-BLG-311 : A planetary candidate below the threshold of reliable detection. / Yee, J. C.; Hung, L. W.; Bond, I. A.; Allen, W.; Monard, L. A G; Albrow, M. D.; Fouqué, P.; Dominik, M.; Tsapras, Y.; Udalski, A.; Gould, A.; Zellem, R.; Bos, M.; Christie, G. W.; Depoy, D. L.; Dong, Subo; Drummond, J.; Gaudi, B. S.; Gorbikov, E.; Han, C.; Kaspi, S.; Klein, N.; Lee, C. U.; Maoz, D.; McCormick, J.; Moorhouse, D.; Natusch, T.; Nola, M.; Park, B. G.; Pogge, R. W.; Polishook, D.; Shporer, A.; Shvartzvald, Y.; Skowron, J.; Thornley, G.; Abe, F.; Bennett, D. P.; Botzler, C. S.; Chote, P.; Freeman, M.; Fukui, A.; Furusawa, K.; Harris, P.; Itow, Y.; Ling, C. H.; Masuda, K.; Matsubara, Y.; Miyake, N.; Ohnishi, K.; Rattenbury, N. J.; Saito, To; Sullivan, D. J.; Sumi, T.; Suzuki, D.; Sweatman, W. L.; Tristram, P. J.; Wada, K.; Yock, P. C M; Szymański, M. K.; Soszyński, I.; Kubiak, M.; Poleski, R.; Ulaczyk, K.; Pietrzyński, G.; Wyrzykowski; Bachelet, E.; Batista, V.; Beatty, T. G.; Beaulieu, J. P.; Bennett, C. S.; Bowens-Rubin, R.; Brillant, S.; Caldwell, J. A R; Cassan, A.; Cole, A. A.; Corrales, E.; Coutures, C.; Dieters, S.; Dominis Prester, D.; Donatowicz, J.; Greenhill, J.; Henderson, C. B.; Kubas, D.; Marquette, J. B.; Martin, R.; Menzies, J. W.; Shappee, B.; Williams, A.; Wouters, D.; Van Saders, J.; Zub, M.; Street, R. A.; Horne, K.; Bramich, D. M.; Steele, I. A.; Al-Subai, Khalid; Bozza, V.; Browne, P.; Burgdorf, M. J.; Calchi Novati, S.; Dodds, P.; Finet, F.; Gerner, T.; Hardis, S.; Harpsøe, K.; Hessman, F. V.; Hinse, T. C.; Hundertmark, M.; Jørgensen, U. G.; Kains, N.; Kerins, E.; Liebig, C.; Mancini, L.; Mathiasen, M.; Penny, M. T.; Proft, S.; Rahvar, S.; Ricci, D.; Sahu, K. C.; Scarpetta, G.; Schäfer, S.; Schönebeck, F.; Snodgrass, C.; Southworth, J.; Surdej, J.; Wambsganss, J.

In: Astrophysical Journal, Vol. 769, No. 1, 77, 20.05.2013.

Research output: Contribution to journalArticle

Yee, JC, Hung, LW, Bond, IA, Allen, W, Monard, LAG, Albrow, MD, Fouqué, P, Dominik, M, Tsapras, Y, Udalski, A, Gould, A, Zellem, R, Bos, M, Christie, GW, Depoy, DL, Dong, S, Drummond, J, Gaudi, BS, Gorbikov, E, Han, C, Kaspi, S, Klein, N, Lee, CU, Maoz, D, McCormick, J, Moorhouse, D, Natusch, T, Nola, M, Park, BG, Pogge, RW, Polishook, D, Shporer, A, Shvartzvald, Y, Skowron, J, Thornley, G, Abe, F, Bennett, DP, Botzler, CS, Chote, P, Freeman, M, Fukui, A, Furusawa, K, Harris, P, Itow, Y, Ling, CH, Masuda, K, Matsubara, Y, Miyake, N, Ohnishi, K, Rattenbury, NJ, Saito, T, Sullivan, DJ, Sumi, T, Suzuki, D, Sweatman, WL, Tristram, PJ, Wada, K, Yock, PCM, Szymański, MK, Soszyński, I, Kubiak, M, Poleski, R, Ulaczyk, K, Pietrzyński, G, Wyrzykowski, Bachelet, E, Batista, V, Beatty, TG, Beaulieu, JP, Bennett, CS, Bowens-Rubin, R, Brillant, S, Caldwell, JAR, Cassan, A, Cole, AA, Corrales, E, Coutures, C, Dieters, S, Dominis Prester, D, Donatowicz, J, Greenhill, J, Henderson, CB, Kubas, D, Marquette, JB, Martin, R, Menzies, JW, Shappee, B, Williams, A, Wouters, D, Van Saders, J, Zub, M, Street, RA, Horne, K, Bramich, DM, Steele, IA, Al-Subai, K, Bozza, V, Browne, P, Burgdorf, MJ, Calchi Novati, S, Dodds, P, Finet, F, Gerner, T, Hardis, S, Harpsøe, K, Hessman, FV, Hinse, TC, Hundertmark, M, Jørgensen, UG, Kains, N, Kerins, E, Liebig, C, Mancini, L, Mathiasen, M, Penny, MT, Proft, S, Rahvar, S, Ricci, D, Sahu, KC, Scarpetta, G, Schäfer, S, Schönebeck, F, Snodgrass, C, Southworth, J, Surdej, J & Wambsganss, J 2013, 'MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection', Astrophysical Journal, vol. 769, no. 1, 77. https://doi.org/10.1088/0004-637X/769/1/77
Yee, J. C. ; Hung, L. W. ; Bond, I. A. ; Allen, W. ; Monard, L. A G ; Albrow, M. D. ; Fouqué, P. ; Dominik, M. ; Tsapras, Y. ; Udalski, A. ; Gould, A. ; Zellem, R. ; Bos, M. ; Christie, G. W. ; Depoy, D. L. ; Dong, Subo ; Drummond, J. ; Gaudi, B. S. ; Gorbikov, E. ; Han, C. ; Kaspi, S. ; Klein, N. ; Lee, C. U. ; Maoz, D. ; McCormick, J. ; Moorhouse, D. ; Natusch, T. ; Nola, M. ; Park, B. G. ; Pogge, R. W. ; Polishook, D. ; Shporer, A. ; Shvartzvald, Y. ; Skowron, J. ; Thornley, G. ; Abe, F. ; Bennett, D. P. ; Botzler, C. S. ; Chote, P. ; Freeman, M. ; Fukui, A. ; Furusawa, K. ; Harris, P. ; Itow, Y. ; Ling, C. H. ; Masuda, K. ; Matsubara, Y. ; Miyake, N. ; Ohnishi, K. ; Rattenbury, N. J. ; Saito, To ; Sullivan, D. J. ; Sumi, T. ; Suzuki, D. ; Sweatman, W. L. ; Tristram, P. J. ; Wada, K. ; Yock, P. C M ; Szymański, M. K. ; Soszyński, I. ; Kubiak, M. ; Poleski, R. ; Ulaczyk, K. ; Pietrzyński, G. ; Wyrzykowski ; Bachelet, E. ; Batista, V. ; Beatty, T. G. ; Beaulieu, J. P. ; Bennett, C. S. ; Bowens-Rubin, R. ; Brillant, S. ; Caldwell, J. A R ; Cassan, A. ; Cole, A. A. ; Corrales, E. ; Coutures, C. ; Dieters, S. ; Dominis Prester, D. ; Donatowicz, J. ; Greenhill, J. ; Henderson, C. B. ; Kubas, D. ; Marquette, J. B. ; Martin, R. ; Menzies, J. W. ; Shappee, B. ; Williams, A. ; Wouters, D. ; Van Saders, J. ; Zub, M. ; Street, R. A. ; Horne, K. ; Bramich, D. M. ; Steele, I. A. ; Al-Subai, Khalid ; Bozza, V. ; Browne, P. ; Burgdorf, M. J. ; Calchi Novati, S. ; Dodds, P. ; Finet, F. ; Gerner, T. ; Hardis, S. ; Harpsøe, K. ; Hessman, F. V. ; Hinse, T. C. ; Hundertmark, M. ; Jørgensen, U. G. ; Kains, N. ; Kerins, E. ; Liebig, C. ; Mancini, L. ; Mathiasen, M. ; Penny, M. T. ; Proft, S. ; Rahvar, S. ; Ricci, D. ; Sahu, K. C. ; Scarpetta, G. ; Schäfer, S. ; Schönebeck, F. ; Snodgrass, C. ; Southworth, J. ; Surdej, J. ; Wambsganss, J. / MOA-2010-BLG-311 : A planetary candidate below the threshold of reliable detection. In: Astrophysical Journal. 2013 ; Vol. 769, No. 1.
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title = "MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection",
abstract = "We analyze MOA-2010-BLG-311, a high magnification (A max > 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 Δχ2 ∼ 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.",
keywords = "Galaxy: bulge, gravitational lensing: micro, planets and satellites: detection",
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TY - JOUR

T1 - MOA-2010-BLG-311

T2 - A planetary candidate below the threshold of reliable detection

AU - Yee, J. C.

AU - Hung, L. W.

AU - Bond, I. A.

AU - Allen, W.

AU - Monard, L. A G

AU - Albrow, M. D.

AU - Fouqué, P.

AU - Dominik, M.

AU - Tsapras, Y.

AU - Udalski, A.

AU - Gould, A.

AU - Zellem, R.

AU - Bos, M.

AU - Christie, G. W.

AU - Depoy, D. L.

AU - Dong, Subo

AU - Drummond, J.

AU - Gaudi, B. S.

AU - Gorbikov, E.

AU - Han, C.

AU - Kaspi, S.

AU - Klein, N.

AU - Lee, C. U.

AU - Maoz, D.

AU - McCormick, J.

AU - Moorhouse, D.

AU - Natusch, T.

AU - Nola, M.

AU - Park, B. G.

AU - Pogge, R. W.

AU - Polishook, D.

AU - Shporer, A.

AU - Shvartzvald, Y.

AU - Skowron, J.

AU - Thornley, G.

AU - Abe, F.

AU - Bennett, D. P.

AU - Botzler, C. S.

AU - Chote, P.

AU - Freeman, M.

AU - Fukui, A.

AU - Furusawa, K.

AU - Harris, P.

AU - Itow, Y.

AU - Ling, C. H.

AU - Masuda, K.

AU - Matsubara, Y.

AU - Miyake, N.

AU - Ohnishi, K.

AU - Rattenbury, N. J.

AU - Saito, To

AU - Sullivan, D. J.

AU - Sumi, T.

AU - Suzuki, D.

AU - Sweatman, W. L.

AU - Tristram, P. J.

AU - Wada, K.

AU - Yock, P. C M

AU - Szymański, M. K.

AU - Soszyński, I.

AU - Kubiak, M.

AU - Poleski, R.

AU - Ulaczyk, K.

AU - Pietrzyński, G.

AU - Wyrzykowski,

AU - Bachelet, E.

AU - Batista, V.

AU - Beatty, T. G.

AU - Beaulieu, J. P.

AU - Bennett, C. S.

AU - Bowens-Rubin, R.

AU - Brillant, S.

AU - Caldwell, J. A R

AU - Cassan, A.

AU - Cole, A. A.

AU - Corrales, E.

AU - Coutures, C.

AU - Dieters, S.

AU - Dominis Prester, D.

AU - Donatowicz, J.

AU - Greenhill, J.

AU - Henderson, C. B.

AU - Kubas, D.

AU - Marquette, J. B.

AU - Martin, R.

AU - Menzies, J. W.

AU - Shappee, B.

AU - Williams, A.

AU - Wouters, D.

AU - Van Saders, J.

AU - Zub, M.

AU - Street, R. A.

AU - Horne, K.

AU - Bramich, D. M.

AU - Steele, I. A.

AU - Al-Subai, Khalid

AU - Bozza, V.

AU - Browne, P.

AU - Burgdorf, M. J.

AU - Calchi Novati, S.

AU - Dodds, P.

AU - Finet, F.

AU - Gerner, T.

AU - Hardis, S.

AU - Harpsøe, K.

AU - Hessman, F. V.

AU - Hinse, T. C.

AU - Hundertmark, M.

AU - Jørgensen, U. G.

AU - Kains, N.

AU - Kerins, E.

AU - Liebig, C.

AU - Mancini, L.

AU - Mathiasen, M.

AU - Penny, M. T.

AU - Proft, S.

AU - Rahvar, S.

AU - Ricci, D.

AU - Sahu, K. C.

AU - Scarpetta, G.

AU - Schäfer, S.

AU - Schönebeck, F.

AU - Snodgrass, C.

AU - Southworth, J.

AU - Surdej, J.

AU - Wambsganss, J.

PY - 2013/5/20

Y1 - 2013/5/20

N2 - We analyze MOA-2010-BLG-311, a high magnification (A max > 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 Δχ2 ∼ 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.

AB - We analyze MOA-2010-BLG-311, a high magnification (A max > 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 Δχ2 ∼ 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.

KW - Galaxy: bulge

KW - gravitational lensing: micro

KW - planets and satellites: detection

UR - http://www.scopus.com/inward/record.url?scp=84877756434&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84877756434&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/769/1/77

DO - 10.1088/0004-637X/769/1/77

M3 - Article

VL - 769

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 77

ER -