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Astrometric Confirmation and Preliminary Orbital Parameters of the Young Exoplanet 51 Eridani b with the Gemini Planet Imager

Authors
  • Eric Nielsen
  • Sarah, Blunt
  • Robert, De Rosa
  • Quinn, Konopacky
  • James R, Graham
  • Bruce, Macintosh
  • Franck Marchis
  • Jason, Wang
  • Laurent, Pueyo
  • Julien, Rameau
  • Christian, Marois
Volume
3
Source
SETI Institute
License
Unknown

Abstract

The Gemini Planet Imager Exoplanet Survey discovered the young, 2 Jupiter mass planet 51 Eri b based on observations conducted in December 2014 and January 2015. It is the lowest mass extrasolar planet ever detected by direct imaging and shows strong methane absorption, and is at a projected separation of just 13 AU from its host star. We present new astrometry from late 2015 that confirms 51 Eri b is a bound planet and not an interloping brown dwarf. Orbital motion is detected despite monitoring the system for less ...

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