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Astrophysics and Space Science

, Volume 292, Issue 1–4, pp 691–696 | Cite as

Evidence for an Ionized Rotating Structure Around RW Aur

  • Ana I. Gómez de Castro
  • Eva Verdugo
Article
  • 31 Downloads

Abstract

Profiles of the UV semiforbidden lines of C III and Si III of RW Aur have been obtained with the HST/STIS. The C III profile shows two high velocity components at v = ± 170 km s−1 and a central one. The Si III profile is very broad (FWHM = 293 km s−1) and the high velocity components are unresolved. It is shown that the high velocity components are most probably produced in a rotating belt alike the detected in other sources of bipolar outflows. A radius between 2.7 R * and the corotation radius (6.1 R *) is derived and a log T e (K) ≃4.7 and log n e(cm −3) = 11.6 are estimated. The belt is clumpy and the most likely source of heating is local X-rays radiation, probably associated with the release of magnetic energy.

stars: pre-main-sequence stars: T Tauri stars: individual: RW Aur 

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References

  1. Andretta, V. and Jones, H.P.: 1997, ApJ 489, 375.CrossRefADSGoogle Scholar
  2. Brandt et al.: 2001, AJ 121, 2173.CrossRefADSGoogle Scholar
  3. Dougados, C., Cabrit, S., Lavalley, C. and Ménard, F.: 2000, A&A 357, L61.ADSGoogle Scholar
  4. Gahm, G.F., Petrov, P.P., Duemmler, R., Gameiro, J.F. and Lago, M.T.V.T.: 1999, A&A 352, L95.ADSGoogle Scholar
  5. Gómez de Castro, A.I.: 2002, MNRAS 332, 409.CrossRefADSGoogle Scholar
  6. Gómez de Castro, A.I. and Franqueira, M.: 1997, ULDA Access Guide to T Tauri stars observed with IUE, ESA-SP 1205, ESA Publisher, Noordwijk, The Netherlands.Google Scholar
  7. Gómez de Castro, A.I. and Lamzin, S.A.: 1999, MNRAS 304, L41.CrossRefADSGoogle Scholar
  8. Gómez de Castro, A.I. and Verdugo, E.: 2001, ApJ 548, 976.CrossRefADSGoogle Scholar
  9. Gómez de Castro, A.I. and Verdugo, E.: 2002, Highlights of Spanish Astrophysics, III Dordrecht: Kluwer Academic Publishers, Gallego, J., Zemoreno, J. and Cardiel, N. (eds.), p. 361.Google Scholar
  10. Gómez de Castro, A.I. and Verdugo, E.: 2003, ApJ, 597, 443.CrossRefADSGoogle Scholar
  11. Haman, F.: 1994, ApJSS 93, 485.CrossRefADSGoogle Scholar
  12. Hirth, G.A., Mundt, R. and Solf, J.: 1997, A&ASS 126,437.ADSGoogle Scholar
  13. Hirth, G.A., Mundt, R., Solf, J. and Ray, T.P.: 1994, ApJ 427, L99.CrossRefADSGoogle Scholar
  14. López-Martín, L., Cabrit, S. and Dougados, C.: 2003, A& A 405, L1.Google Scholar
  15. Macpherson, K.P. and Jordan, C.: 1999, MNRAS 308, 510.CrossRefADSGoogle Scholar
  16. Milkey, R.W.: 1975, ApJ 199, L131.CrossRefADSGoogle Scholar
  17. Petrov, P.P., Gahm, G.F., Gameiro, J.F., Duemmler, R., Ilyin, I.V., Laakkonen, T., Lago, M.T.V.T., and Tuominen, I.: 2001, A&A 369, 993.CrossRefADSGoogle Scholar
  18. Stout-Batalha, N.M., Batlha, C.C. and Basri, G.S.: 2000, ApJ 532, 474.CrossRefADSGoogle Scholar
  19. Woitas, J., Ray, T.P., Bacciotti, F., Davis, C.J. and Eisloeffel, J.: 2002, ApJ 580 336.CrossRefADSGoogle Scholar

Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Ana I. Gómez de Castro
    • 1
  • Eva Verdugo
    • 2
  1. 1.Instituto de Astronomía y Geodesia (CSIC-UCM), Facultad de Ciencias MatemáticasUniversidad Complutense de MadridSpain
  2. 2.ISO Data CenterVILSPA-ESAMadridSpain

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