Planets Around Active Stars

  • J. Setiawan
  • P. Weise
  • Th. Henning
  • A. P. Hatzes
  • L. Pasquini
  • L. da Silva
  • L. Girardi
  • O. von der Lühe
  • M. P. Döllinger
  • A. Weiss
  • K. Biazzo
Part of the ESO Astrophysics Symposia book series (ESO)

Abstract

We present the results of radial velocity measurements of two samples of active stars. The first sample contains field G and K giants across the Red Giant Branch, whereas the second sample consists of nearby young stars (d < 150 pc) with ages between 10 and 300 Myrs. The radial velocity monitoring program has been carried out with FEROS at 1.52 m ESO telescope (1999 – 2002) and continued since 2003 at 2.2 m MPG/ESO telescope. We observed stellar radial velocity variations which originate either from the stellar activity or the presence of stellar/substellar companions. By means of a bisector technique we are able to distinguish the sources of the radial velocity variation. Among them we found few candidates of planetary companions, both of young stars and G-K giants sample.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • J. Setiawan
    • 1
  • P. Weise
    • 1
  • Th. Henning
    • 1
  • A. P. Hatzes
    • 2
  • L. Pasquini
    • 3
  • L. da Silva
    • 4
  • L. Girardi
    • 5
  • O. von der Lühe
    • 6
  • M. P. Döllinger
    • 3
  • A. Weiss
    • 7
  • K. Biazzo
    • 3
    • 8
  1. 1.Max-Planck-Institut für AstronomieHeidelbergGermany
  2. 2.Thüringer LandessternwarteTautenburgGermany
  3. 3.European Southern ObservatoryGarching bei MünchenGermany
  4. 4.Observatório NacionalRio da JaneiroBrazil
  5. 5.Osservatorio Astronomico di Padova-INAFPadovaItaly
  6. 6.Kiepenheuer-Institut für SonnenphysikFreiburg (Brsg)Germany
  7. 7.Max-Planck-lnstitut für AstrophysikGarching bei MünchenGermany
  8. 8.Osservatorio Astrofisico di Catania-INAFCataniaItaly

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