Titlebook: Effects of Mass Loss on Stellar Evolution; IAU Colloquium no. 5 C. Chiosi,R. Stalio Book 1981 D. Reidel Publishing Company, Dordrecht, Holl

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deciduous

Robert P. Trueblood,John N. Lovett Jr.Contrary to the results of some investigators, the ratio of terminal to escape velocities (V∞/Vesc) observed for the winds in early-type stars is found to be linearly correlated with log г — г being the ratio of stellar to Eddington’s luminosities.

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Is a Stellar Wind Inherent in WR-Stars Throughout the Whole of their Evolution?In addition to certain manifestation of a stellar wind during steady states of WR-stars that we have heard here about I have two notes on their extremal stages of evolution which may be also connected to such a hydrodynamical event.

colony

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Mass Outflow in AG Carinae and a Comparison with P CygniAG 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.. Also the strength of the 2200 A band is the same and suggests E(B-V) = 0.55 both stars. The possible variability of the infrared flux is discussed.

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Mass Loss from Hot Stars Below the Main SequenceThe evolutionary implications of mass loss from post-asymptotic giant branch stars is discussed, with reference to the UV observations of sdO’s.

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Mercantile

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