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, Ł.; 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.; Alsubai, K. A.; 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.; Collaboration, The μFUN; Collaboration, The MOA; Collaboration, The OGLE; Collaboration, The PLANET; Collaboration, The RoboNet; Consortium, The MiNDSTEp

doi: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, Ł.; Bachelet, E.; Batista, V.; Beatty, T. G.; Beaulieu, J.-P.; Bennett, C. S.; Bowens-Rubin, R.; Brillant, S.; Caldwell, J. A. R.; Cassan...

Authors

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

Ł. 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

Dr John Taylor j.k.taylor@keele.ac.uk

J. Surdej

J. Wambsganss

The μFUN Collaboration

The MOA Collaboration

The OGLE Collaboration

The PLANET Collaboration

The RoboNet Collaboration

The MiNDSTEp Consortium

Abstract

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 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.

Citation

Yee, J. C., Hung, L., Bond, I. A., Allen, W., Monard, L. A. G., Albrow, M. D., …Consortium, T. M. (in press). 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

Journal Article Type	Article
Acceptance Date	Mar 22, 2013
Online Publication Date	May 6, 2013
Deposit Date	Jun 16, 2023
Journal	The Astrophysical Journal
Print ISSN	0004-637X
Electronic ISSN	1538-4357
Publisher	American Astronomical Society
Peer Reviewed	Peer Reviewed
Volume	769
Issue	1
Article Number	77
DOI	https://doi.org/10.1088/0004-637x/769/1/77
Keywords	Space and Planetary Science; Astronomy and Astrophysics
Publisher URL	https://iopscience.iop.org/article/10.1088/0004-637X/769/1/77

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