Influence of stellar wind on the long-term variability of the Hα emission line. The case of the Herbig Ae-star HD 31648

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Stars, Stellar Wind-Individual, Hd 31648

Scientific paper

The results of high-resolution long-term spectral monitoring in the
region of the emission Ha line of the Herbig Ae star HD 31648 are
reported. The variability in the observed profile is shown to be caused
mainly by a change in the parameters of outflowing circumstellar gas
over a time scale of about 3 years.

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