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- W3098646897 abstract "We present the results of time-series photometric analysis of 15106 A-K type stars observed by the Kepler space mission. We identified 513 new rotational variables and measured their starspot rotation periods as a function of spectral type and discuss the distribution of their amplitudes. We examined the well-established period-color relationship that applies to stars of spectral types F5-K for all of these rotational variables and, interestingly, found that a similar period-color relationship appears to extend to stars of spectral types A7 to early-F too. This result is not consistent with the very foundation of the period-color relationship. We have characterized 350 new non-radial pulsating variables such as A- and F-type candidate δ Scuti, γ Doradus and hybrid stars, which increases the known candidate non-radial pulsators in the Kepler field significantly, by ∼20%. The relationship between two recently constructed observables, Energy and Efficiency , was also studied for the large sample of non-radial pulsators, which shows that the distribution in the logarithm of Energy ( log(En) ) can be used as a potential tool to distinguish between the non-radial pulsators, to some extent. Through visual inspection of the light curves and their corresponding frequency spectra, we found 23 new candidate red giant solar-like oscillators not previously reported in the literature. The basic physical parameters such as masses, radii and luminosities of these solar-like oscillators were also derived using asteroseismic relations.The online version of this article (10.1007/s10509-018-3480-1) contains supplementary material, which is available to authorized users." @default.
- W3098646897 created "2020-11-23" @default.
- W3098646897 creator A5023789024 @default.
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- W3098646897 date "2018-12-01" @default.
- W3098646897 modified "2023-10-17" @default.
- W3098646897 title "A study of pulsation & rotation in a sample of A-K type stars in the Kepler field" @default.
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