2018/06/04 by Wuming Yang, Yang, Wuming
Physics and Astronomy · #Astronomy and Astrophysical Research #FOS: Physical sciences #History and Developments in Astronomy #Solar and Stellar Astrophysics (astro-ph.SR) #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.1806.00994
openalex publication_date 2018/06/04 · openalex created_date 2018/06/13 · openalex updated_date 2026/07/28
Scaling formulas were deduced to describe the relations between the fundamental stellar parameters and the mean linewidth and lifetime of solar-like oscillations of stars. The mean linewidth and lifetime of solar-like oscillations are dependent on the large frequency separation, the effective temperature, and the acoustic impedance (ρc) in the photosphere of stars. The mean lifetime can be approximate to the lifetime of the mode with ν∼νmax. We compared the results of the scaling relations with the mean lifetimes of solar-like oscillations of stars observed by Kepler and CoRoT, which shows that the observed mean lifetimes are reproduced well by the scaling relations. The dependence of the mean lifetime on the large frequency separation, the effective temperature, and the acoustic impedance of stars indicates that lifetimes of solar-like oscillations rely on the mass and evolutionary phase of stars. Moreover, our calculations show that the mean lifetimes of p-modes of stars can be affected by metallicity abundances.