EPJ Web of Conferences (Apr 2013)

Jupiter analogues and planets of active stars

  • Henning T.,
  • Nilsson H.,
  • Hartman H.,
  • Lo Curto G.,
  • Endl M.,
  • Zechmeister M.,
  • Kürster M.,
  • Hatzes A.P.,
  • Cochran W.D.

DOI
https://doi.org/10.1051/epjconf/20134705005
Journal volume & issue
Vol. 47
p. 05005

Abstract

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Combined results are now available from a 15 year long search for Jupiter analogues around solar-type stars using the ESO CAT + CES, ESO 3.6 m + CES, and ESO 3.6 m + HARPS instruments. They comprise planet (co-)discoveries (ι Hor and HR 506) and confirmations (three planets in HR 3259) as well as non-confirmations of planets (HR 4523 and ɛ Eri) announced elsewhere. A long-term trend in ɛ Ind found by our survey is probably attributable to a Jovian planet with a period >30 yr, but we cannot fully exclude stellar activity effects as the cause. A 3.8 year periodic variation in HR 8323 can be attributed to stellar activity.