Application of the theory of linear filtering to stellar spectroscopy

Details Application of the theory of linear filtering to stellar spectroscopy Application of the theory of linear filtering to stellar spectroscopy

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mmsai..50..227g&link_type=abstract

Società Astronomica Italiana, Memorie, vol. 50, June 1979, p. 227-244.

Astronomy and Astrophysics

Astronomy

High Dispersion Spectrographs, Linear Filters, Stellar Spectrophotometry, White Noise, Doppler Effect, Fourier Transformation, Giant Stars, Graphs (Charts), K Stars, Power Spectra, Signal Distortion, T Tauri Stars, Transfer Functions

Scientific paper

The theory of linear filtering is outlined for the case of white noise. The optimum filter and its transfer function are discussed, along with a simple mathematical expression for the transfer function. The theory is applied to high-dispersion spectra of the K giant Delta Tauri. It is found that linear filtering has only a very small effect on the line profile.

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