MOA-2010-BLG-523: “FAILED PLANET” = RS CVn STAR

Gould, A.; Yee, J. C.; Bond, I. A.; Udalski, A.; Han, C.; Jørgensen, U. G.; Greenhill, J.; Tsapras, Y.; Pinsonneault, M. H.; Bensby, T.; Allen, W.; Almeida, L. A.; Bos, M.; Christie, G. W.; DePoy, D. L.; Dong, Subo; Gaudi, B. S.; Hung, L.-W.; Jablonski, F.; Lee, C.-U.; McCormick, J.; Moorhouse, D.; Muñoz, J. A.; Natusch, T.; Nola, M.; Pogge, R. W.; 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.; Alsubai, K. A.; Bozza, V.; Browne, P.; Burgdorf, M. J.; Calchi Novati, S.; Dodds, P.; Dominik, M.; Finet, F.; Gerner, T.; Hardis, S.; Harpsøe, K.; Hessman, F. V.; Hinse, T. C.; Hundertmark, M.; 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.; Street, R. A.; Horne, K.; Bramich, D. M.; Steele, I. A.; Albrow, M. D.; 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.; Fouqué, P.; Henderson, C. B.; Kubas, D.; Marquette, J.-B.; Martin, R.; Menzies, J. W.; Shappee, B.; Williams, A.; van Saders, J.; Zub, M.; The μFUN Collaboration; The MOA Collaboration; The OGLE Collaboration; The MiNDSTEp Consortium; The RoboNet Collaboration; The PLANET Collaboration

doi:10.1088/0004-637x/763/2/141

MOA-2010-BLG-523: “FAILED PLANET” = RS CVn STAR

Gould, A.; Yee, J. C.; Bond, I. A.; Udalski, A.; Han, C.; Jørgensen, U. G.; Greenhill, J.; Tsapras, Y.; Pinsonneault, M. H.; Bensby, T.; Allen, W.; Almeida, L. A.; Bos, M.; Christie, G. W.; DePoy, D. L.; Dong, Subo; Gaudi, B. S.; Hung, L.-W.; Jablonski, F.; Lee, C.-U.; McCormick, J.; Moorhouse, D.; Muñoz, J. A.; Natusch, T.; Nola, M.; Pogge, R. W.; 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.; Alsubai, K. A.; Bozza, V.; Browne, P.; Burgdorf, M. J.; Calchi Novati, S.; Dodds, P.; Dominik, M.; Finet, F.; Gerner, T.; Hardis, S.; Harpsøe, K.; Hessman, F. V.; Hinse, T. C.; Hundertmark, M.; Kains, N.; Kerin...

Authors

A. Gould

J. C. Yee

I. A. Bond

A. Udalski

C. Han

U. G. Jørgensen

J. Greenhill

Y. Tsapras

M. H. Pinsonneault

T. Bensby

W. Allen

L. A. Almeida

M. Bos

G. W. Christie

D. L. DePoy

Subo Dong

B. S. Gaudi

L.-W. Hung

F. Jablonski

C.-U. Lee

J. McCormick

D. Moorhouse

J. A. Muñoz

T. Natusch

M. Nola

R. W. Pogge

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

K. A. Alsubai

V. Bozza

P. Browne

M. J. Burgdorf

S. Calchi Novati

P. Dodds

M. Dominik

F. Finet

T. Gerner

S. Hardis

K. Harpsøe

F. V. Hessman

T. C. Hinse

M. Hundertmark

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

R. A. Street

K. Horne

D. M. Bramich

I. A. Steele

M. D. Albrow

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

P. Fouqué

C. B. Henderson

D. Kubas

J.-B. Marquette

R. Martin

J. W. Menzies

B. Shappee

A. Williams

J. van Saders

M. Zub

The μFUN Collaboration

The MOA Collaboration

The OGLE Collaboration

The MiNDSTEp Consortium

The RoboNet Collaboration

The PLANET Collaboration

Abstract

The Galactic bulge source MOA-2010-BLG-523S exhibited short-term deviations from a standard microlensing light curve near the peak of an Amax ∼ 265 high-magnification microlensing event. The deviations originally seemed consistent with expectations for a planetary companion to the principal lens. We combine long-term photometric monitoring with a previously published high-resolution spectrum taken near peak to demonstrate that this is an RS CVn variable, so that planetary microlensing is not required to explain the light-curve deviations. This is the first spectroscopically confirmed RS CVn star discovered in the Galactic bulge.

Citation

Gould, A., Yee, J. C., Bond, I. A., Udalski, A., Han, C., Jørgensen, U. G., …The PLANET Collaboration. (in press). MOA-2010-BLG-523: “FAILED PLANET” = RS CVn STAR. Astrophysical Journal, 763(2), Article 141. https://doi.org/10.1088/0004-637x/763/2/141

Journal Article Type	Article
Acceptance Date	Jan 17, 2013
Online Publication Date	Jan 17, 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	763
Issue	2
Article Number	141
DOI	https://doi.org/10.1088/0004-637x/763/2/141
Keywords	Space and Planetary Science; Astronomy and Astrophysics

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