Publication details

Disks Surrounding Be stars: A Stellar Evolution Perspective

Authors

GRANADA A. EKSTRÖM S. GEORGY C. MEYNET G. KRTIČKA Jiří OWOCKI S. P.

Year of publication 2012
Type Article in Proceedings
Conference Circumstellar Dynamics at High Resolution
MU Faculty or unit

Faculty of Science

Citation
Web http://adsabs.harvard.edu/abs/2012ASPC..464..117G
Field Astronomy and astrophysics
Keywords be stars disks
Description There is evidence that at least some stars undergoing the Be phenomenon are single, almost critically rotating stars surrounded by viscous Keplerian disks. By combining our new stellar evolutionary tracks for critically rotating B-type stars with different masses and metallicities, with the parametrized expressions by Krtička et al. (2011) describing the properties of a stationary viscous Keplerian disk surrounding a star rotating at its breakup limit, we are able to explore for the first time how the properties of such a disk changes along the main sequence evolution of the star. The results we obtain can be relevant in the understanding of the formation and existence of Keplerian viscous decretion disks around rapidly rotating single Be stars.
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