The convection of close red supergiant stars observed with near-infrared interferometry

Abstract

Our team has obtained observations of the photosphere of the two closest red supergiant stars Betelgeuse ($\alpha$ Ori) and Antares ($\alpha$ Sco) using near infrared interferometry. We have been monitoring the photosphere of Betelgeuse with the VLTI/PIONIER instrument for three years. On Antares, we obtained an unprecedented sampling of the visibility function. These data allow us to probe the convective photosphere of massive evolved stars.

5 pages, 3 figures. Published in the proceedings of the Physics Of Evolved Stars conference, dedicated to the memory of Olivier Chesneau (Nice, France, 2015)

References in corpus (3)

• Atmospheric dynamics and the mass loss process in red supergiant stars
• The close circumstellar environment of Betelgeuse - II. Diffraction-limited spectro-imaging from 7.76 to 19.50 microns with VLT/VISIR
• Properties of the CO and H${}_2$O MOLsphere of the red supergiant Betelgeuse from VLTI/AMBER observations

Cited by in corpus (1)

• Measuring surface magnetic fields of red supergiant stars