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What Ejected Nebulae around Evolved Massive Stars Tell us of the Rotation of their Central Star

Published online by Cambridge University Press:  26 May 2016

Antonella Nota
Antonella Nota*
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive Baltimore MD 21218, and European Space Agency

Abstract

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Most LBVs and Ofpe/WN9 stars in the Milky Way and in the Magellanic Clouds are surrounded by associated circumstellar nebulae which have been ejected in some previous phase of their evolution. These nebulae are the fossil record of the interactions of previous winds and of the violent ejections in which the stars most likely have shed their outer layers. The study of the morphology, kinematics and chemical composition of the ejected material has allowed us to gain deep insight in the ejection and shaping mechanism, and in the properties of the central star at the moment of the ejection. In this review I will address how ejected nebulae are providing independent supporting evidence that rotation plays a major role in the evolution of massive stars.

Type
Session 4 Rotation and Stellar Evolution
Information
Symposium - International Astronomical Union , Volume 215: Stellar Rotation , 2004 , pp. 491 - 499
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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