Browsing by Author "4450ddc3-3880-442c-86ad-b3e52d4210eb"

Now showing items 1-3 of 3

    • Discovery of a complex linearly polarized spectrum of Betelgeuse dominated by depolarization of the continuum 
      Aurière, M.; López Ariste, A.; Mathias, P.; Lèbre, A.; Josselin, E.; Montargès, M.; Petit, P.; Chiavassa, A.; Paletou, F.; Fabas, N.; Konstantinova Antova, R.; Donati, J. F.; Grunhut, J. H.; Wade, W. A.; Herpin, F.; Kervella, Pierre; Perrin, G.; Tessore, B (EDP Sciences, 2016)
      Context. Betelgeuse is an M supergiant that harbors spots and giant granules at its surface and presents linear polarization of its continuum. Aims. We have previously discovered linear polarization signatures associated ...
    • The close circumstellar environment of Betelgeuse IV. VLTI/PIONIER interferometric monitoring of the photosphere 
      Montargès, M.; Kervella, Pierre; Perrin, G.; Chiavassa, A.; Le Bouquin, J.-B.; Aurière, M.; López Ariste, A.; Mathias, P.; Ridgway, S. T.; Lacour, S.; Haubois, X.; Berger, J.-P. (ESO, 2016)
      Context. The mass-loss mechanism of cool massive evolved stars is poorly understood. The proximity of Betelgeuse makes it an appealing target to study its atmosphere, map the shape of its envelope, and follow the structure ...
    • The convective surface of the red supergiant Antares VLTI/PIONIER interferometry in the near infrared 
      Montarges, M.; Chiavassa, A.; Kervella, P.; Ridgway, S. T.; Perrin, G.; Le Bouquin, J. B.; Lacour, S. (EDP Sciences, 2017)
      Context. Convection is a candidate to explain the trigger of red supergiant star (RSG) mass loss. Owing to the small size of the convective cells on the photosphere, few of the characteristics of RSGs are known. Aims. ...