Wavelet analysis of Wolf-Rayet emission line variability: Evidence for clumping

Details Wavelet analysis of Wolf-Rayet emission line variability: Evidence for clumping Wavelet analysis of Wolf-Rayet emission line variability: Evidence for clumping

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.221..371l&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 221, no. 1-2, p. 371-382

Physics

6

Emission Spectra, Mathematical Models, Stellar Physics, Stellar Winds, Variability, Wavelet Analysis, Wind Velocity, Wolf-Rayet Stars, Anisotropy, Broadband, Compressible Flow, Noise Spectra, Scaling Laws, Turbulent Flow, Velocity Measurement

Scientific paper

A wavelet analysis technique is developed and used to study variable spectral features on top of broad emission lines in Wolf-Rayet stars. A decomposition of the signal in discrete structures allows one to look for scaling laws. Results from the study of two Wolf-Rayet stars suggest we are seeing the upper tail-end of a scaled distribution. This provides a test for turbulence models, and sets new constraints on theoretical wind models.

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