Optimizing Weights for the Detection of Stellar Oscillations: Application to alpha Centauri A and B, and beta Hydri
Solar and Stellar Astrophysics
2009-01-26 v1
Abstract
We have recently developed a new method for adjusting weights to minimize sidelobes in the spectral window. Here we show the results of applying this method to published two-site velocity observations of three stars (alpha Cen A, alpha Cen B and beta Hyi). Compared to our previous method of minimizing sidelobes, which involved adjusting the weights on a night-by-night basis, we find a significant improvement in frequency resolution. In the case of alpha Cen A, this should allow the detection of extra oscillation modes in the data.
Keywords
Cite
@article{arxiv.0901.3632,
title = {Optimizing Weights for the Detection of Stellar Oscillations: Application to alpha Centauri A and B, and beta Hydri},
author = {T. Arentoft and H. Kjeldsen and T. R. Bedding},
journal= {arXiv preprint arXiv:0901.3632},
year = {2009}
}
Comments
9 pages, 10 figures, proc. SOHO XXI/GONG 2008