The Fastest Corona in Town

Computer Science

Scientific paper

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Chandra Proposal Id #08200106

Scientific paper

The young (12 Myr) Beta Pic moving group member HD 199143 (F8V) has the largest v sini of any known solar-like star accessible to Chandra gratings and represents a unique opportunity to study surface magnetic and coronal structure on a young solar analogue. Our proposed HETG+ACIS-S will probe the scale height of the hot magnetised outer atmosphere coronal through Doppler rotational line broadening. Rotationally-induced Doppler shifts will probe the presence of dominant coronal features at lower latitudes. Provide plasma temperature structure, density and chemical composition. The results will be used to complement and test 3-D coronal models deduced from extrapolation of photospheric magnetic fields from a contemporaneous Zeeman-Doppler imaging study.

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