Observations of Pulsating AP Stars in South Africa

Details Observations of Pulsating AP Stars in South Africa Observations of Pulsating AP Stars in South Africa

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.230...29m&link_type=abstract

Astrophysics and Space Science, Volume 230, Issue 1-2, pp. 29-39

Astronomy and Astrophysics

Astrophysics

12

Stars: Pulsation, Stars: Peculiar A

Scientific paper

The rapidly oscillating Ap (roAp) stars currently represent the only main sequence stars other than the Sun which exhibit non-radial acoustic pulsations of high overtone. This makes them excellent subjects for asteroseismology, an approach which promises to yield accurate knowledge of the interior structures of stars. Of the 27 known roAp stars, 24 were discovered in Sutherland despite extensive searches conducted elsewhere. This paper reviews the discovery of the roAp phenomenon and describes the factors that contribute to the high discovery rate for these stars at Sutherland. Two long-term observational projects in progress at Sutherland are discussed,viz. the Cape roAp Star Survey and long-term monitoring of frequency variations in roAp stars.

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