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Paper: Nebulae from Eruptions of Luminous Evolved Stars: Eta Carinae, RY Scuti, and the LBVs
Volume: 361, Active OB-Stars: Laboratories For Stellar and Circumstellar Physics
Page: 200
Authors: Smith, N.
Abstract: The most prodigious mass loss for luminous hot stars occurs during the Luminous Blue Variable (LBV) phase in transition to a Wolf-Rayet star. Most of the mass loss is a result of a few brief eruptions, rather than a steady wind. For the most luminous stars, these eruptions eject several MSolar at once, accounting for a large fraction of their total post–main-sequence mass loss. The geometry of their nebulae in the young free expansion phase traces the roles of rotation and binary interactions. Our most observable example is the nebula around η Car, while nebulae around the eclipsing binary RY Sct and other LBVs share similar but less extreme properties. Both η Car and RY Sct have nebulae less than 200 yrs old with pronounced axial symmetry.
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