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X-rays from accretion shocks in T Tauri stars: The case of BP Tau

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 نشر من قبل J. H. M. M. Schmitt
 تاريخ النشر 2005
  مجال البحث فيزياء
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 تأليف J.H.M.M. Schmitt




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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.



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