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Thomas Bensby. Profile photo.

Thomas Bensby

Senior lecturer

Thomas Bensby. Profile photo.

MOA-2010-BLG-523:" Failed Planet"= RS CVn Star

Author

  • A. Gould
  • J. C. Yee
  • I. A. Bond
  • A. Udalski
  • C. Han
  • U. G. Jorgensen
  • J. Greenhill
  • Y. Tsapras
  • M. H. Pinsonneault
  • Thomas 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. Munoz
  • 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. Szymanski
  • I. Soszynski
  • M. Kubiak
  • R. Poleski
  • K. Ulaczyk
  • G. Pietrzynski
  • L. 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. Harpsoe
  • 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. Schaefer
  • F. Schoenebeck
  • C. Snodgrass
  • J. Southworth
  • 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. Fouque
  • C. B. Henderson
  • D. Kubas
  • J-B Marquette
  • R. Martin
  • J. W. Menzies
  • B. Shappee
  • A. Williams
  • J. van Saders
  • M. Zub

Summary, in English

The Galactic bulge source MOA-2010-BLG-523S exhibited short-term deviations from a standard microlensing light curve near the peak of an A(max) similar to 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.

Department/s

  • Lund Observatory - Undergoing reorganization

Publishing year

2013

Language

English

Publication/Series

Astrophysical Journal

Volume

763

Issue

2

Document type

Journal article

Publisher

American Astronomical Society

Topic

  • Astronomy, Astrophysics and Cosmology

Keywords

  • gravitational lensing: micro
  • planetary systems
  • starspots
  • stars:
  • variables: general

Status

Published

ISBN/ISSN/Other

  • ISSN: 0004-637X