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The Corona comma Chromosphere and Photosphere of Speedy Mic in one shot

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ESA Earth Online2026-06-22 收录
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We propose simultaneous observations of the ultrafast rotating latetype starSpeedy Mic at Xray, near UV and optical wavelengths. In this way we want tostudy the spatial correlation of coronal, chromospheric and photosphericactivity phenomena. The proposed study includes timeresolved high resolutionspectroscopy monitoring of key line ratios, probing the distribution of coronaltemperatures, densities and elemental abundances.The requirement of strictlysimultaneous observations results from the shortlived nature of active regionson Speedy Mic. Our proposal is based on our previous results from VLTmeasurements constructing a Doppler image of Speedy Mic and finding pronouncedrotational modulation of CaII emission. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]

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European Space Agency
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