Doppler images of DI Piscium during 2004–2006
نویسندگان
چکیده
منابع مشابه
Structured Mesh Generation from Doppler Ultrasound Images
Atherosclerosis can be quantitatively evaluated by the intima-media thickness (IMT), which measures the distance between the inner boundary of the adventitia and the lumen, the region of the vessel where the blood flows. Colour Doppler ultrasound provides real-time images of endovascular structure and measuring techniques have improved to provide accurate information on the flow fields. Further...
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Doppler Images and Chromospheric Variability of TWA 17
We present Doppler imaging and a Balmer line analysis of the weak-line T Tauri star TWA 17. Spectra were taken in 2006 with the UCL Echelle Spectrograph on the Anglo-Australian Telescope. Using least-squares deconvolution to improve the effective signal-to-noise ratio we produced a Doppler map of the surface spot distribution. This shows similar features to maps of other rapidly rotating T Taur...
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We present Doppler imaging and Balmer line analysis of the weak-line T Tauri star TWA 6. Using this data we have made one of the first attempts to measure differential rotation in a T Tauri star, and the first detection of a slingshot prominence in such a star. We also show the most direct evidence to date of the existence of solar-type plages in a star other than the Sun. Observations were mad...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2014
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201322669