Smoothed Temporal Variance Spectrum: weak line profile variations and NRP diagnostics
Solar and Stellar Astrophysics
2016-03-22 v1
Abstract
We describe the version of the Temporal Variance Spectrum (TVS, Fullerton, Gies & Bolton 1996) method with pre-smoothed line profile (smoothed Temporal Variance Spectrum, smTVS). This method introduced by Kholtygin et al. (2003) can be used to detect the ultra weak variations of the line profile even for very noisy stellar spectra. We also describe how to estimate the mode of the non-radial pulsations (NRP) using the TVS and smTVS with different time spans. The influence of the rotational modulation of the line profile on the TVS is considered. The analysis of the contribution of NRP and rotational modulation in the global TVS is studied.
Cite
@article{arxiv.1603.06079,
title = {Smoothed Temporal Variance Spectrum: weak line profile variations and NRP diagnostics},
author = {A. F. Kholtygin and N. P. Sudnik},
journal= {arXiv preprint arXiv:1603.06079},
year = {2016}
}
Comments
15 pages, 21 figures, accepted for publication in MNRAS