Do pulsating PG1159-035 stars put constraints on stellar evolution?

Details Do pulsating PG1159-035 stars put constraints on stellar evolution? Do pulsating PG1159-035 stars put constraints on stellar evolution?

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.303..781w&link_type=abstract

Nature (ISSN 0028-0836), vol. 303, June 30, 1983, p. 781-782.

Physics

63

Hot Stars, Stellar Evolution, Stellar Oscillations, Variable Stars, White Dwarf Stars, Carbon Stars, Neutrinos, Stellar Temperature

Scientific paper

The variable star PG1159-035, discovered by McGraw et al. (1979), is the prototype of a new class of extremely hot pulsating degenerate stars. Here preliminary theoretical results are presented indicating that the pulsation periods of these stars should be decreasing with an e-folding time of the order of 10 to the 6th yr - a value directly reflecting their rapid cooling times. It is pointed out that such a rapid change in period should be measurable on a time scale of 1-3 yr, and that such measurements should be a direct test of stellar evolution and pulsation theory for hot degenerate objects.

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