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Mass outflow in AG Carinae and a comparison with P Cygni+

Published online by Cambridge University Press:  12 April 2016

S. Bensammar ,
S. Gaudenzi ,
C. Rossi ,
H.M. Johnson ,
P.S. Thé ,
E.J. Zuiderwijk  and
R. Viotti
S. Bensammar
Affiliation:
DEPEG, Observatoire de Meudon, Meudon, France
S. Gaudenzi
Affiliation:
Istituto Osservatorio Astronomico, Roma University, Italy
C. Rossi
Affiliation:
Istituto Osservatorio Astronomico, Roma University, Italy
H.M. Johnson
Affiliation:
Lockheed Missiles and Space Co., Palo Alto, USA
P.S. Thé
Affiliation:
Astronomical Institute, University of Amsterdam, Amsterdam, The Netherlands
E.J. Zuiderwijk
Affiliation:
Astronomical Institute, University of Amsterdam, Amsterdam, The Netherlands
R. Viotti
Affiliation:
Istituto Osservatorio Astronomico, Roma University, Italy

Abstract

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AG Car is a variable supergiant surrounded by a small ring nebula. Its ultraviolet and optical spectrum, and UV to IR energy distribution are similar to those of P Cyg with v∞ = -290 km s-1. Also the strength of the 2200 A band is the same and suggests E(B-V) = 0.55 for both stars. The possible variability of the infrared flux is discussed.

Type
Session I - Winds from Early Type Stars: Observations
Information
International Astronomical Union Colloquium , Volume 59: Effects of Mass Loss on Stellar Evolution , 1981 , pp. 67 - 69
Copyright
Copyright © Reidel 1981

Footnotes

*

This work is based in part on observations made at the European Southern Observatory at La Silla. H.M.J.'s part of this work has been done under contract NAS 5-24481 with NASA. We are glad to acknowledge the assistance of the IUE Observatory Staff at GSPC in the acquisition and reduction of these data. Dr. A. Giangrande is gratefully aknowledged for his help in the IUE data analysis.

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