Search results for " stars: circumstellar matter"

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X-ray emission from MP Muscae: an old classical T Tauri star

2007

We study the properties of X-ray emitting plasma of MP Mus, an old classical T Tauri star. We aim at checking whether an accretion process produces the observed X-ray emission and at deriving the accretion parameters and the characteristics of the shock-heated plasma. We compare the properties of MP Mus with those of younger classical T Tauri stars to test whether age is related to the properties of the X-ray emission plasma. XMM-Newton X-ray spectra allows us to measure plasma temperatures, abundances, and electron density. In particular the density of cool plasma probes whether X-ray emission is produced by plasma heated in the accretion process. X-ray emission from MP Mus originates from…

PhysicsElectron densitystars: abundances stars: circumstellar matter stars: coronae stars: individual: MP Muscae stars: pre-main sequence X-rays: starsAstrophysics::High Energy Astrophysical PhenomenaAstrophysics (astro-ph)X-rayHigh densityFOS: Physical sciencesAstronomy and AstrophysicsPlasmaAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsSpectral lineAccretion (astrophysics)Accretion rateT Tauri starSettore FIS/05 - Astronomia E AstrofisicaSpace and Planetary ScienceAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Earth and Planetary AstrophysicsAstrophysics::Galaxy Astrophysics

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