A. V. Yushchenko, T. N. Dorokhova, V. F. Gopka, C. Kim


The profiles of spectral lines in the high resolution (R=80,000) and high signal to noise ratio (S/N more than 300) VLT spectrum of ρ Pup are not symmetric. Under the assumption that the asymmetry of the observed profiles is introduced by nonradial pulsations we estimated the pulsational degree l=3, the azimuthal order m=1, and amplitude of pulsation 15 km s-1. The projected rotational velocity of the star is near v sin i =3.5 km s-1. The obtained synthetic spectrum yield the better fit to the observed one in comparison with earlier known parameters.

Ключові слова

stars; oscillation - stars; variables (ρ Pup; δ Scuti) - stars; individual (ρ Pup)

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