Astrophysics and Space Science

, Volume 99, Issue 1–2, pp 139–144 | Cite as

Radial velocity and profile variations of the ultraviolet circumstellar lines in ζ tauri

  • D. N. Dawanas
  • R. Hirata


The radial velocity and profile variations of UV lines of the shell star ζ Tau have been examined in the IUE spectra obtained in 1978–1982. The neutral atoms, and once or twice-ionized ions (exceptCii, Aliii, Siiii resonance lines) follow the same velocity variations as in the visual spectra, while the Siiv andCiv resonance lines show a constant negative velocity (∼−50 km s−1 at the core). The Aliii,Cii resonance lines and probably Feiii (mult. No. 34) are formed in both regions, i.e., in lowly-ionized and highly-ionized regions and the Siiii resonance line is formed in a highly-ionized region.


Radial Velocity Velocity Variation Resonance Line Neutral Atom Feiii 
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  1. Delplace, A. M. and Chambon, M. Th.: 1976, in A. Slettebak (ed.), ‘Be and Shell Stars’,IAU Symp. 70, 79.Google Scholar
  2. Hirata, R., Katahira, J., and Jugaku, J.: 1982, in M. Jaschek and H. G. Groth (eds.), ‘Be Stars’,IAU Symp. 98, 161.Google Scholar
  3. Hubert-Delplace, A. M., Mon, M., Ungerer, V., Hirata, R., Paterson-Beeckmans, F., Hubert, H., and Baade, D.: 1982,Astron. Astrophys. 121, 174.Google Scholar
  4. Hynek, J. A. and Struve, O.: 1942,Astrophys. J. 96, 425.Google Scholar
  5. Kelly, R. L.: 1979, NASA TM 80268, Goddard Space Flight Center, Greenbelt, Maryland.Google Scholar
  6. Kelly, R. L. and Palumbo, L. J.: 1973, NRL Report 7599, Washington, Naval Research Laboratory.Google Scholar
  7. Underhill, A. B.: 1952,Publ. Dominion Astrophys. Obs. 9, 138.Google Scholar

Copyright information

© D. Reidel Publishing Company 1984

Authors and Affiliations

  • D. N. Dawanas
    • 1
    • 2
  • R. Hirata
    • 3
  1. 1.Bosscha Observatory, Department of AstronomyBandung Institute of TechnologyIndonesia
  2. 2.Department of AstronomyUniversity of KyotoJapan
  3. 3.Department of AstronomyUniversity of KyotoJapan

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