Advertisement

Astrophysics and Space Science

, Volume 238, Issue 1, pp 97–100 | Cite as

The case of the fastest stellar wind in central stars of planetary nebulae

  • Patrizio Patriarchi
  • Mario Perinotto
Article

Abstract

An exceptionally fast wind (8500 km/s) was suggested to occur in the central star of the planetary nebula K1-16, belonging to the class of the PG 1159 H-deficient pre-white dwarfs. To ascertain the reality of such a fast wind this star has been observed with the HST telescope using the GHRS in the zone of theCiv 155.0 nm doublet. The HST data and tests made using synthetic stellar spectra support the existence of a stellar wind with a terminal velocity of 3800 km/s and a mass loss rate lower thanM<2 · 10−11M per year. Possibly it is no longer the fastest stellar wind so far observed but it is still among the fastest.

Keywords

Mass Loss Loss Rate Mass Loss Rate Stellar Wind Terminal Velocity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Heap, S.R., 1986, inNew Insight in Astrophysics, Proc. Joint NASA/ESA/SERC Conference, ESA SP-263, p. 291.Google Scholar
  2. Hubeny I.J., 1988,Computer Physics Comm. 52, 103.Google Scholar
  3. Husfeld D., 1987, in IAU Coll. 95,The Second Conference on Faint Blue Stars, (Eds. A.G.D. Philip, D.S. Ayes, and J. Liebert), L. Davis Press, Schenectady, NY, p.237Google Scholar
  4. Kaler, J.B., Feibelman, W.A., 1985,ApJ 297, 724.Google Scholar
  5. Lamers, H.J.G.L.M., Cerruti-Sola, M., Perinotto M., 1987,ApJ 314, 726Google Scholar
  6. Motch, C., Werner K., Pakull M.W., 1993,A&A 268, 561Google Scholar
  7. Patriarchi P., Perinotto M., 1991,A&AS 91, 325Google Scholar
  8. Werner, K., Heber, U., 1991a,A&A 247, 476Google Scholar
  9. Werner K., 1993, inWhite Dwarfs: Advances in Observations and Theory, Kluwer, (ed. M.A. Barstow), NATO ASI Series 403, 67Google Scholar
  10. Werner, K., Heber, U., Hunger, K., 1991,A&A 244, 437Google Scholar
  11. Wesemael F., Green R., Liebert J., 1985,ApJS 58, 357Google Scholar

Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Patrizio Patriarchi
    • 1
  • Mario Perinotto
    • 2
  1. 1.GNA/CNR, clo Osservatorio Astrofisico di ArcetriFirenzeItaly
  2. 2.Dip. di Astronomia e Scienza dello SpazioFirenzeItaly

Personalised recommendations