Spectrally and spatially resolved Hα emission from Be stars: their disks rotate Keplerian

Details Spectrally and spatially resolved Hα emission from Be stars: their disks rotate Keplerian Spectrally and spatially resolved Hα emission from Be stars: their disks rotate Keplerian

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..272..418o&link_type=abstract

Active OB stars: structure, evolution, mass loss, and critical limits, Proceedings of the International Astronomical Union, IAU

Astronomy and Astrophysics

Astronomy

3

Line: Profiles, Techniques: High Angular Resolution, Stars: Emission-Line, Be

Scientific paper

We test whether Be star disks rotate in a Keplerian or an Angular Momentum Conserving fashion. This is done by employing sub-milli arcsecond spectroastrometry around Hα. We spatially resolve the disks, and are the first to do so at such a high spectral resolution. We fit the emission line profiles with parametric models. The Keplerian models reproduce the spectro-astrometry, whereas the AMC models do not, thereby supporting the viscous disk model for Be stars.

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