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


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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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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