2019/09/02 by Abhay Pratap Yadav, Yadav, Abhay Pratap
Earth and Planetary Sciences · Physics and Astronomy · #Astronomy and Astrophysical Research #FOS: Physical sciences #Geophysics and Gravity Measurements #Solar and Stellar Astrophysics (astro-ph.SR) #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.1909.00517
openalex publication_date 2019/09/02 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
Under the Nainital-Cape Survey, eight δ Scuti type pulsators have been discovered with the pulsation periods in the range of several minutes to few hours. In order to understand these observed pulsational variabilities, we have performed non-adiabatic linear stability analyses in models of these stars having mass in the range of 1 to 3 M\odot. Several low order p-modes are found to be unstable where the pulsation periods associated with these unstable modes are in good agreement with the observed periods. Particularly for HD 118660, HD 113878, HD 102480, HD 98851, and HD 25515, we demonstrate that the observed variabilities can be explained with the low order radial p-mode pulsations.