ρ PUPPIS: THE POSSIBILITY OF NON-RADIAL PULSATIONS

Автор(и)

  • A. V. Yushchenko Astrophysical Research Center for the Structure and Evolution of the Cosmos (ARCSEC, Korea, Republic of
  • T. N. Dorokhova Astronomical Observatory of Odessa National University, Marazlievskaya, 1v, 65014 Odessa, Ukraine, Ukraine
  • V. F. Gopka Astronomical Observatory of Odessa National University, Marazlievskaya, 1v, 65014 Odessa, Ukraine, Ukraine
  • C. Kim Department of Earth Science Education, Chonbuk National University, Korea, Korea, Republic of

DOI:

https://doi.org/10.18524/1810-4215.2008.21.86885

Ключові слова:

stars, oscillation - stars, variables (&#961, Pup, &#948, Scuti) - stars, individual (&#961, Pup)

Анотація

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.

Посилання

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2008-12-20

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