3938 20190128143632.0 10.1007/s10509-018-3480-1 DOI SCART-2019-0078 Chowdhury, S. A study of pulsation & rotation in a sample of A-K type stars in the Kepler field 2018 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. BL/ 11/ IN07 NO stars: oscillations stars: rotation, starspots stars: variables: δ Scuti stars: variables stars: variables: solarlike Joshi, S. Engelbrecht, C. A. De Cat, P. Joshi, Y. C. Paul, K. T. Astrophysics and Space Science 363 2018 12 260 (1-18) peter.decat@observatoire.be https://link.springer.com/article/10.1007%2Fs10509-018-3480-1 published in REFERD