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Atmospheric Phenomena in ETA Carinae and the Hubble-Sandage Variables

Published online by Cambridge University Press:  12 April 2016

R. Viotti ,
L. Rossi ,
A. Altamore ,
C. Rossi ,
G.B. Baratta  and
A. Cassatella
R. Viotti
Affiliation:
Istituto Astrofisica Spaziale, CNR, Frascati, Italy
L. Rossi
Affiliation:
Istituto Astrofisica Spaziale, CNR, Frascati, Italy
A. Altamore
Affiliation:
Istituto Astronomico, Roma University, Italy
C. Rossi
Affiliation:
Istituto Astronomico, Roma University, Italy
G.B. Baratta
Affiliation:
Osservatorio Astronomico, Roma, Italy
A. Cassatella
Affiliation:
IUE Observatory, ESA, Madrid, Spain

Abstract

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From the analysis of the galactic counterparts of the HS variables, η Car, AG Car and P Cyg we conclude that their atmospheres are near critical physical conditions so that small changes of the mass outflow could produce a large variation of the atmospheric structure and nova-like explosions at nearly constant Mbol.

Type
Part II. Mass-Losing Stars in Different Stages of Evolution
Information
International Astronomical Union Colloquium , Volume 108: Atmospherics Diagnostics of Stellar Evolution: Chemical Peculiarity, Mass Loss, and Explosion , 1988 , pp. 127 - 128
Copyright
Copyright © Springer-Verlag 1988

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