Published February 2013 | Version v1
Journal article Metadata-only

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

Creators

  • 1. Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States)
  • 2. Institute for Information and Mathematical Sciences, Massey University, Private Bag 102-904, Auckland 1330 (New Zealand)
  • 3. Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa (Poland)
  • 4. Department of Physics, Chungbuk National University, Cheongju 361-763 (Korea, Republic of)
  • 5. Niels Bohr Institutet, Københavns Universitet, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark)
  • 6. University of Tasmania, School of Mathematics and Physics, Private Bag 37, Hobart, TAS 7001 (Australia)
  • 7. Las Cumbres Observatory Global Telescope Network, 6740B Cortona Dr, Goleta, CA 93117 (United States)
  • 8. Lund Observatory, Department of Astronomy and Theoretical Physics, Box 43, SE-221 00 Lund (Sweden)
  • 9. Vintage Lane Observatory, Blenheim (New Zealand)
  • 10. Divisao de Astrofisica, Instituto Nacional de Pesquisas Espaciais, Avenida dos Astronautas, 1758 Sao José dos Campos, 12227-010 SP (Brazil)
  • 11. Molehill Astronomical Observatory, North Shore (New Zealand)
  • 12. Auckland Observatory, Auckland (New Zealand)
  • 13. Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843-4242 (United States)
  • 14. Korea Astronomy and Space Science Institute, 776 Daedukdae-ro, Yuseong-gu, Daejeon 305-348 (Korea, Republic of)

Description

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 ∼ 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.

Availability note (English)

Available from http://dx.doi.org/10.1088/0004-637X/763/2/141

Additional details

Identifiers

DOI
10.1088/0004-637X/763/2/141;

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
763
Journal Issue
2
Journal Page Range
[11 p.]
ISSN
0004-637X
CODEN
ASJOAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44121557
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
DIAGRAMS; GRAVITATIONAL LENSES; MONITORING; PLANETS; RESOLUTION; SPECTRA; STARS; STARSPOTS
Descriptors DEC
INFORMATION; LENSES; STELLAR ACTIVITY

Optional Information

Collaborations
muFUN Collaboration; MOA Collaboration; OGLE Collaboration; MiNDSTEp Consortium; RoboNet Collaboration; PLANET Collaboration