Query : 2015A&A...581A..89P

2015A&A...581A..89P - Astronomy and Astrophysics, volume 581A, 89-89 (2015/9-1)

Limits in the application of harmonic analysis to pulsating stars.


Abstract (from CDS):

Using ultra-precise data from space instrumentation, we found that the underlying functions of stellar light curves from some AF pulsating stars are non-analytic, and consequently their Fourier expansion is not guaranteed. This result demonstrates that periodograms do not provide a mathematically consistent estimator of the frequency content for this type of variable stars. More importantly, this constitutes the first counterexample against the current paradigm, which considers that any physical process is described by a continuous (band-limited) function that is infinitely differentiable.

Abstract Copyright:

Journal keyword(s): asteroseismology - methods: data analysis - stars: oscillations

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
1 HD 174936 dS* 18 52 58.8983705784 +02 49 50.853166320   8.79 8.56     A3IV 33 0
2 TYC 3128-1790-1 dS* 19 01 38.0616756528 +41 30 26.938170540   11.7 11.2     ~ 6 0

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