Browsing by Author "Ridgway, S."

Now showing items 1-4 of 4

    • Cepheid distances from the SpectroPhoto-Interferometry of Pulsating Stars (SPIPS) Application to the ... 
      Mérand, A.; Kervella, Pierre; Breitfelder, J.; Gallenne, A.; Coudé du Foresto, V.; Brummelaar, T. A. ten; McAlister, H. A.; Ridgway, S.; Sturmann, L.; Sturmann, J.; Turner, N. H. (EDP Sciences, 2015)
      Context. The parallax of pulsation, and its implementations such as the Baade-Wesselink method and the infrared surface brightness technique, is an elegant method to determine distances of pulsating stars in a quasi-geometrical ...
    • The close circumstellar environment of Betelgeuse III. SPHERE/ZIMPOL imaging polarimetry in the visible 
      Kervella, Pierre; Lagadec, E.; Montarges, M.; Ridgway, S.; Chiavassa, A.; Haubois, X.; Schmid, H.; Langlois, M.; Gallenne, A.; Perrin, G. (EDP SCIENCES, 2016)
      The physical mechanism through which the outgoing material of massive red supergiants is accelerated above the escape velocity is unclear. Thanks to the transparency of its circumstellar envelope, the nearby red supergiant ...
    • Resolving asymmetries along the pulsation cycle of the Mira star X Hydrae 
      Haubois, X.; Wittkowski, M.; Perrin, G.; Kervella, Pierre; Mérand, A.; Thiébaut, E.; Ridgway, S.; Ireland, M.; Scholz, M. (EDP Sciences, 2015)
      Context. The mass-loss process in Mira stars probably occurs in an asymmetric way where dust can form in inhomogeneous circumstellar molecular clumps. Following asymmetries along the pulsation cycle can give us clues about ...
    • Robust high-contrast companion detection from interferometric observations. The CANDID algorithm and an ... 
      Gallenne, A.; Mérand, A.; Kervella, Pierre; Monnier, J. D.; Schaefer, G. H.; Baron, F.; Breitfelder, J.; Le Bouquin, J. B.; Roettenbacher, R. M.; Gieren, W.; Pietrzynski, G.; McAlister, H.; Brummelaar, T. ten; Sturmann, J.; Sturmann, L.; Turner, N.; Ridgway, S.; Kraus, S. (EDP Sciences, 2015)
      Context. Long-baseline interferometry is an important technique to spatially resolve binary or multiple systems in close orbits. By combining several telescopes together and spectrally dispersing the light, it is possible ...