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Amplitude modulation of pulsation mo...

Bowman, Dominic M.

Amplitude modulation of pulsation modes in Delta Scuti stars

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Amplitude modulation of pulsation modes in Delta Scuti starsby Dominic M. Bowman.
作者:	Bowman, Dominic M.
出版者:	Cham :Springer International Publishing :2017.
面頁冊數:	xvi, 204 p. :ill., digital ;24 cm.
Contained By:	Springer eBooks
標題:	Stellar oscillations.
電子資源:	http://dx.doi.org/10.1007/978-3-319-66649-5
ISBN:	9783319666495$q(electronic bk.)

Amplitude modulation of pulsation modes in Delta Scuti stars
Bowman, Dominic M.

Amplitude modulation of pulsation modes in Delta Scuti stars[electronic resource] /by Dominic M. Bowman. - Cham :Springer International Publishing :2017. - xvi, 204 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

Introduction -- The Kepler Space Photometry Revolution -- The Delta Scuti Star KIC 7106205 -- Kepler Observations of Delta Scuti Stars -- Amplitude Modulation in Delta Scuti Stars -- Characterising Pulsational Non-linearity -- Characterising Pulsational Non-linearity -- Conclusions and Future Work.

This outstanding thesis by Dominic Bowman provides a thorough investigation of long-standing questions as to whether amplitude modulation is astrophysical, whether it offers insights into pulsating stars, and whether simple beating of modes with stable amplitudes is unrecognised because of a lack of frequency resolution. In this thesis, the author studied a uniform sample of 983 delta Scuti stars--the most common type of main-sequence heat engine pulsator--that were observed nearly continuously for 4 years at stunning photometric precision of only a few parts per million by the Kepler space mission. With no mission planned to supersede the Kepler 4-year data set, this thesis will stand as the definitive study of these questions for many years. With revolutionary photometric data from the planet-hunting Kepler space mission, asteroseismic studies have been carried out on many hundreds of main-sequence solar-type stars and about 10,000 red giants. It is easy to understand why those stochastically driven stars have highly variable amplitudes. Over much of the rest of the Hertzsprung-Russell (HR) diagram, stellar pulsations are driven by heat mechanisms, which are much more regular than the stochastic driving in solar-like pulsators. Yet for decades, amplitude and frequency modulation of pulsation modes have been observed in almost all types of heat-driven pulsating stars. The author shows that the amplitude and frequency modulation are astrophysical, and he has investigated their implications and prospects to provide new insights into the delta Scuti stars and the many other types of heat-engine pulsators across the HR diagram.

ISBN: 9783319666495$q(electronic bk.)

Standard No.: 10.1007/978-3-319-66649-5doiSubjects--Topical Terms:

522818
Stellar oscillations.

LC Class. No.: QB812

Dewey Class. No.: 523.8

Amplitude modulation of pulsation modes in Delta Scuti stars
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520 $a This outstanding thesis by Dominic Bowman provides a thorough investigation of long-standing questions as to whether amplitude modulation is astrophysical, whether it offers insights into pulsating stars, and whether simple beating of modes with stable amplitudes is unrecognised because of a lack of frequency resolution. In this thesis, the author studied a uniform sample of 983 delta Scuti stars--the most common type of main-sequence heat engine pulsator--that were observed nearly continuously for 4 years at stunning photometric precision of only a few parts per million by the Kepler space mission. With no mission planned to supersede the Kepler 4-year data set, this thesis will stand as the definitive study of these questions for many years. With revolutionary photometric data from the planet-hunting Kepler space mission, asteroseismic studies have been carried out on many hundreds of main-sequence solar-type stars and about 10,000 red giants. It is easy to understand why those stochastically driven stars have highly variable amplitudes. Over much of the rest of the Hertzsprung-Russell (HR) diagram, stellar pulsations are driven by heat mechanisms, which are much more regular than the stochastic driving in solar-like pulsators. Yet for decades, amplitude and frequency modulation of pulsation modes have been observed in almost all types of heat-driven pulsating stars. The author shows that the amplitude and frequency modulation are astrophysical, and he has investigated their implications and prospects to provide new insights into the delta Scuti stars and the many other types of heat-engine pulsators across the HR diagram.
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