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X-rays from accretion shocks in T Tauri stars: The case of BP Tau | | J.H.M.M. Schmitt
; J. Robrade
; J.-U. Ness
; F. Favata
; B. Stelzer
; | | Date: |
7 Mar 2005 | | Subject: | astro-ph | | Affiliation: | Hamburger Sternwarte, Hamburg,University of Oxford, Department of Theoretical Physics, Oxford, Astrophysics Division, ESA/ESTEC, Noordwijk, Dipartimento di Scienze Fisiche e Astronomiche, Universita di Palermo | | Abstract: | We present an XMM-Newton observation of the classical T Tauri star BP Tau. In the XMM-Newton RGS spectrum the O {sc vii} triplet is clearly detected with a very weak forbidden line indicating high plasma densities and/or a high UV flux environment. At the same time concurrent UV data point to a small hot spot filling factor suggesting an accretion funnel shock as the site of the X-ray and UV emission. Together with the X-ray data on TW Hya these new observations suggest such funnels to be a general feature in classical T Tauri stars. | | Source: | arXiv, astro-ph/0503144 | | Services: | Forum | Review | PDF | Favorites | |
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