HST Spectroscopy of PG 1159 Stars: the Boundary of the GW VIR Instability Strip

Dreizler, S.

Germany

Abstract

Our recent analysis of PG 1159 stars, mainly based on the HST spectroscopy, is presented. The results allow several conclusions regarding the boundary of the GW Vir instability strip and the driving mechanism for these pulsations.

1998 Baltic Astronomy
eHST 13