A method to detect p-mode oscillations in solar-like star signals

¹ Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain
² Dpto. de Astrofísica, Universidad de La Laguna, La Laguna, 38206, Tenerife, Spain e-mail: trc@astro.iac.es

Corresponding author: C. Régulo, crr@astro.iac.es

Received: 24 April 2002
Accepted: 18 September 2002

Abstract

A good example of finding a signal buried in noise, a common problem in Astrophysics, is the search for stellar oscillations in the acoustic power spectrum of solar-like stars. In this work it is shown that it is possible to find this type of signal in the power spectrum of stellar oscillations if the peaks are “almost” equally spaced in frequency, as the asymptotic theory for acoustic modes predicts. This signature of the power spectra of the p-mode oscillations in solar-like stars is used to design a method that allows the identification of the signal even when this signal is completely buried in noise, .