Bulletin de la Société Royale des Sciences de Liège

0037-9565 1783-5720

 

sinds 05 februari 2011 :
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Nathan Smith

Circumstellar Material Around Evolved Massive Stars

(Volume 80 - Année 2011)
Article
Open Access

Abstract

I review multiwavelength observations of material seen around different types of evolved massive stars (i.e. red supergiants, yellow hypergiants, luminous blue variables, B[e] supergiants, and Wolf-Rayet stars), concentrating on diagnostics of mass, composition, and kinetic energy in both local and distant examples. Circumstellar material has significant implications for the evolutionary state of the star, the role of episodic mass loss in stellar evolution, and the roles of binarity and rotation in shaping the ejecta. This mass loss determines the type of supernova that results via the stripping of the star’s outer layers, but the circumstellar gas can also profoundly influence the immediate pre-supernova environment. Dense circumstellar material can actually change the type of supernova that is seen when it is illuminated by the supernova or heated by the blast wave. As such, unresolved circumstellar material illuminated by distant supernovae can provide a way to study mass loss in massive stars in distant environments.

Om dit artikel te citeren:

Nathan Smith, «Circumstellar Material Around Evolved Massive Stars», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 80 - Année 2011, 322 - 334 URL : https://popups.uliege.be/0037-9565/index.php?id=2781.

Over : Nathan Smith

Steward Observatory, University of Arizona, 933 N. Cherry Ave., Tucson, AZ, 85721, USA, and Astronomy Department, University of California, 601 Campbell Hall, Berkeley, CA 94720, USA