Browsing by Author "Delfosse, X."

Now showing items 1-3 of 3

    • The HARPS search for southern extra-solar planets XXXVI. Planetary systems and stellar activity of the M ... 
      Astudillo Defru, N.; Bonfils, X.; Delfosse, X.; Ségransan, D.; Forveille, T.; Bouchy, F.; Gillon, M.; Lovis, C.; Mayor, M.; Neves, V.; Pepe, F.; Perrier, C.; Queloz, D.; Rojo Rubke, Patricio; Santos, N. C.; Udry, S. (2015)
      Context. Planetary companions of a fixed mass induce reflex motions with a larger amplitude around lower-mass stars, which adds to making M dwarfs excellent targets for extra-solar planet searches. The most recent ...
    • A HARPS view on K2-3 
      Almenara, J. M.; Astudillo Defru, N.; Bonfils, X.; Forveille, T.; Santerne, A.; Albrecht, S.; Barros, S. C. C.; Bouchy, F.; Delfosse, X.; Demangeon, O.; Diaz, R. F.; Hébrard, G.; Mayor, M.; Neves, V.; Rojo Rubke, Patricio; Santos, N. C.; Wünsche, A. (EDP Sciences, 2015)
      K2 space observations recently found that three super-Earths transit the nearby M dwarf K2-3. The apparent brightness and the small physical radius of their host star rank these planets amongst the most favourable for ...
    • Magnetic activity and hot Jupiters of young Suns: the weak-line T Tauri stars V819 Tau and V830 Tau 
      Donati, J. F.; Hébrard, E.; Hussain, G. A. J.; Moutou, C.; Malo, L.; Grankin, K.; Vidotto, A. A.; Alencar, S. H. P.; Gregory, S. G.; Jardine, M. M.; Herczeg, G.; Morin, J.; Fares, R.; Ménard, Francois; Bouvier, J.; Delfosse, X.; Doyon, R.; Takami, M.; Figueira, P.; Petit, P.; Boisse, I. (Oxford University Press, 2015)
      We report results of a spectropolarimetric and photometric monitoring of the weak-line T Tauri stars (wTTSs) V819 Tau and V830 Tau within the MaTYSSE (Magnetic Topologies of Young Stars and the Survival of close-in giant ...