Spectral Analysis

• Period04 (Lenz and Breger, 2005) (external site)

User Guide:

• Period04 User Guide (Lenz and Breger, 2005)

---

Tools for fitting mode parameters

• Fourier analysis of gapped time series: Maximum likelihood estimation –  A software package to analyze gapped time series and determine maximum likelihood estimates of solar-like oscillations.
• VIRGO Data analysis (Appourchaux, 2003) (external site)

Related articles:

• Fourier analysis of gapped time series: Improved estimates of solar and stellar oscillation parameters (Stahn and Gizon, 2008)

---

Tools for analysing frequencies

• Echelle – Echelle is an interactive Java utility which plots echelle diagrams from a set of frequencies and their associated radial orders and harmonic degrees.
• SurfCorrect – SurfCorrect is an interactive Java utility which calculates frequency corrections due to surface effects, based on the formulas given in Kjeldsen et al. 2008.

Related articles:

• Correcting Stellar Oscillation Frequencies for Near-Surface Effects (Kjeldsen et al., 2008)
• Full-disk observations of solar oscillations from the geographic South Pole – Latest results (Grec et al., 1983)