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Spectral variabilty

Search for spectral variability of  a sample of CP stars and phase relations among light, spectral and magnetic variations.

Tools: spectroscopic observations of HeI l 5876 equivalent width variations.

Results from this studies have been published in:

    Variability of the HeI l5876  line in early type chemically peculiar stars. Paper II
     G. Catanzaro, F. Leone
     2
003, Astronomische Nachritchen, 324, 445

    Variability of the HeI l5876  line in early type chemically peculiar stars
     G. Catanzaro, F. Leone, F. A. Catalano
     1999, Astronomy and Astrophysics Supplement Series, 134, 211

 

Here are some examples from Paper I (click to blow up):

Curve of growth HD 26571 HD 28843 HD 43819 HD 171247 HD 176582 HD 177003 HD 182255 HD 223640
Curve of growth

and from Paper II (click to blow up):

Curve of growth

HD 35502

HD 115735 HD 124224 HD 129174 HD 142990 HD 196502
Curve of growth

                   Spectral variabilty Abundances Binary systems Polarimetry