6533b827fe1ef96bd128720a
RESEARCH PRODUCT
Accretion and Outflow-Related X-Rays in T Tauri Stars
Deborah L. PadgettA. TelleschiE. FranciosiniMarc AudardManuel GüdelBruno SilvaBeate StelzerL. ScelsiS. GuieuS. GuieuK. ArznerGiuseppina MicelaCatherine DougadosKevin BriggsEric D. FeigelsonJerome BouvierJ. L. MoninLuisa RebullThierry MontmerleStephen L. SkinnerThomas PreibischIgnazio PillitteriFrancois MenardFrancesco PallaNicolas GrossoNicolas GrossoAdrian Glausersubject
Physics010308 nuclear & particles physicsAstrophysics::High Energy Astrophysical PhenomenaAstrophysics (astro-ph)FOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics01 natural sciencesAccretion (astrophysics)T Tauri starSpace and Planetary Science0103 physical sciencesAstrophysics::Solar and Stellar AstrophysicsOutflowAstrophysics::Earth and Planetary Astrophysics010303 astronomy & astrophysicsAstrophysics::Galaxy Astrophysicsdescription
We report on accretion- and outflow-related X-rays from T Tauri stars, based on results from the "XMM-Newton Extended Survey of the Taurus Molecular Cloud." X-rays potentially form in shocks of accretion streams near the stellar surface, although we hypothesize that direct interactions between the streams and magnetic coronae may occur as well. We report on the discovery of a "soft excess" in accreting T Tauri stars supporting these scenarios. We further discuss a new type of X-ray source in jet-driving T Tauri stars. It shows a strongly absorbed coronal component and a very soft, weakly absorbed component probably related to shocks in microjets. The excessive coronal absorption points to dust-depletion in the accretion streams.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-05-01 |