EAN: 9783319094168

INVESTIGATING THE A-TYPE STARS USING KEPLER DAT...

Simon Murphy's thesis has significant impact on the wide use of the revolutionary Kepler
Mission data  leading to a new understanding in stellar astrophysics. It first provides a deep
characterisation and comparison of the Kepler long cadence and short cadence data  with
particular insight into the Kepler reduction pipeline. It then brings together modern reviews
of rotation and peculiarities in A-type stars  and their relationship with the pulsating delta
Scuti stars. This is the first combined review of these subjects since the classic monograph by
Sydney Wolff  The A stars  was published three decades ago. The thesis presents a novel
technique  Super-Nyquist Asteroseismology  that has opened up the asteroseismic study of
thousands of Kepler stars. It shows case studies of delta Scuti stars examining amplitude
growth  super-Nyquist pulsation  and pulsation in a high-amplitude  population II SX Phoenicis
star in a 343-d binary. This work informs our understanding of the relation of rotation to
peculiarity  hence has applications to atomic diffusion theory. This is a brilliant thesis
written in an elegant and engaging style.

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