Niobium

MOSTDetects SPBe Pulsations in HD 127756 and HD 217543: Asteroseismic Rotation Rates Independent ofv sin i

“…Loumos & Deeming (1978) suggest an upper limit of 1.5 T −1 (roughly corresponding to the spacing between the main peak of the window function and the peak of its first sidelobe) be used when identifying periodicities directly from an amplitude spectrum. However, lower, and arguably more realistic, estimates are used by Kurtz (1980), who estimates frequency resolution as 0.5 T −1 (approximately the half-width of a peak in the amplitude spectrum), and by Kallinger et al (2008), who suggest ∼ 0.25 T −1 can be used based on a large number of simulated data sets. Ultimately, the resolution of frequencies in Fourier space is a function of S/N (or significance) of each individual peak; see, for example, Kallinger et al (2008), and the above criteria are only estimates used when determining the frequency resolution over the entire frequency range of interest.…”