Statistical Tests for Changes in Pulsation Mode Properties

Details Statistical Tests for Changes in Pulsation Mode Properties Statistical Tests for Changes in Pulsation Mode Properties

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aspc..452..223k&link_type=abstract

Fifth Meeting on Hot Subdwarf Stars and Related Objects, ASP Conference Series Vol. 452, proceedings of a workshop held at Stell

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Scientific paper

Formally it may not be possible to discriminate between true variability of a given pulsation mode on the one hand, and beating between two or more modes with close frequencies. In a number of sdBV stars dramatic changes over short timescales in the overall power content of oscillations, and other evidence, favour the former explanation. Two statistical procedures are discussed: testing for stochastic versus deterministic oscillations, and testing for amplitude variabilityversus constant amplitudes, at a fixed frequency.

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