253 citations · 840 across the 9 of their papers we have counts for
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astro-ph1997★ 177 cited
Multiple Molecular Winds in Evolved Stars I. A Survey of CO(2-1) and CO(3-2) Emission from 45 Nearby AGB Stars
G. R. Knapp, K. Young, E. Lee +1
This paper describes observations of a new phenomenon in evolved mass-losing AGB stars: the presence of two winds with different expansion velocities. CO(2-1) and CO(3-2) line emis…
astro-ph1997★ 45 cited
Circumstellar shells and mass loss rates: Clues to the evolution of S stars
A. Jorissen, G. R. Knapp
It is the purpose of this paper to rediscuss the circumstellar properties of S stars and to put these properties in perspective with our current understanding of the evolutionary s…