Jupiter analogues and planets of active stars

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

Format: Article
Diterbitkan: EDP Sciences 2013-04-01

Deskripsi

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.