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; 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; K. A. Alsubai; 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

doi:10.1088/0004-637X/769/1/77

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. HanS. 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, K. A. Alsubai, 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

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

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 language	English
Article number	77
Journal	Astrophysical Journal
Volume	769
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/769/1/77
State	Published - 20 May 2013

Funding

Funders	Funder number
European Commission
Science and Technology Facilities Council	ST/J001562/1, ST/G009465/1, ST/H005307/1, ST/J001651/1, ST/G001987/1
National Science Foundation	1103471
Japan Society for the Promotion of Science	23340044, 23540339, 24253004, 23654082
Seventh Framework Programme	268421, 246678

Keywords

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

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

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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, S., Drummond, J., Gaudi, B. S., Gorbikov, E., ... Wambsganss, J. (2013). MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection. Astrophysical Journal, 769(1), Article 77. https://doi.org/10.1088/0004-637X/769/1/77

@article{15fe7fe949d14f75af9bf2525dadafa2,

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",

author = "Yee, {J. C.} and Hung, {L. W.} and Bond, {I. A.} and W. Allen and Monard, {L. A.G.} and Albrow, {M. D.} and P. Fouqu{\'e} and M. Dominik and Y. Tsapras and A. Udalski and A. Gould and R. Zellem and M. Bos and Christie, {G. W.} and Depoy, {D. L.} and Subo Dong and J. Drummond and Gaudi, {B. S.} and E. Gorbikov and C. Han and S. Kaspi and N. Klein and Lee, {C. U.} and D. Maoz and J. McCormick and D. Moorhouse and T. Natusch and M. Nola and Park, {B. G.} and Pogge, {R. W.} and D. Polishook and A. Shporer and Y. Shvartzvald and J. Skowron and G. Thornley and F. Abe and Bennett, {D. P.} and Botzler, {C. S.} and P. Chote and M. Freeman and A. Fukui and K. Furusawa and P. Harris and Y. Itow and Ling, {C. H.} and K. Masuda and Y. Matsubara and N. Miyake and K. Ohnishi and Rattenbury, {N. J.} and To Saito and Sullivan, {D. J.} and T. Sumi and D. Suzuki and Sweatman, {W. L.} and Tristram, {P. J.} and K. Wada and Yock, {P. C.M.} and Szyma{\'n}ski, {M. K.} and I. Soszy{\'n}ski and M. Kubiak and R. Poleski and K. Ulaczyk and G. Pietrzy{\'n}ski and Wyrzykowski and E. Bachelet and V. Batista and Beatty, {T. G.} and Beaulieu, {J. P.} and Bennett, {C. S.} and R. Bowens-Rubin and S. Brillant and Caldwell, {J. A.R.} and A. Cassan and Cole, {A. A.} and E. Corrales and C. Coutures and S. Dieters and {Dominis Prester}, D. and J. Donatowicz and J. Greenhill and Henderson, {C. B.} and D. Kubas and Marquette, {J. B.} and R. Martin and Menzies, {J. W.} and B. Shappee and A. Williams and D. Wouters and {Van Saders}, J. and M. Zub and Street, {R. A.} and K. Horne and Bramich, {D. M.} and Steele, {I. A.} and Alsubai, {K. A.} and V. Bozza and P. Browne and Burgdorf, {M. J.} and {Calchi Novati}, S. and P. Dodds and F. Finet and T. Gerner and S. Hardis and K. Harps{\o}e and Hessman, {F. V.} and Hinse, {T. C.} and M. Hundertmark and J{\o}rgensen, {U. G.} and N. Kains and E. Kerins and C. Liebig and L. Mancini and M. Mathiasen and Penny, {M. T.} and S. Proft and S. Rahvar and D. Ricci and Sahu, {K. C.} and G. Scarpetta and S. Sch{\"a}fer and F. Sch{\"o}nebeck and C. Snodgrass and J. Southworth and J. Surdej and J. Wambsganss",

year = "2013",

month = may,

day = "20",

doi = "10.1088/0004-637X/769/1/77",

language = "אנגלית",

volume = "769",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

}

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, Alsubai, KA, 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

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 - Alsubai, K. A.

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

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

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

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:84877756434

SN - 0004-637X

VL - 769

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 77

ER -

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

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