It is currently admitted that an AGB star in a binary system is likely to
pollute its companion with carbon- and s-process-rich matter. After the AGB
star has faded into an unconspicuous white dwarf, the polluted companion enters
the zoo of stars with chemical peculiarities. In this paper, the progeny of AGB
stars in binary systems are identified among existing spectroscopic classes
(Abell 35-like, binary post-AGB, WIRRing, dwarf Ba and C, subgiant CH, Ba, CH,
S, yellow symbiotics) and their filiation is discussed from the properties of
their eccentricity -- period diagrams.Comment: Invited review at IAU Symp. 191 (AGB Stars, eds. T. Le Bertre, A.
Lebre, C. Waelkens), 10 pages, 2 figures (LaTeX/paspconf.sty). Also available
at: http://astro.ulb.ac.be/Htm/ps.ht
