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- W2155456044 abstract "In this contribution we present the preliminary results of high temporal resolution spectroscopic observations of the K5Ve star BD+20 1790. High resolution echelle spectra have been obtained in February 2004 using SOFIN spectrograph at 2.56m Nordic Optical Telescope (NOT, La Palma) and in Abril 2004 using FOCES spectrograph in 2.2m Telescope at Calar Alto Observatory (Spain). In each run continuous series of spectra were taken during visibility time of the star. The analysis of these spectra allow us to monitoring the temporal evolution of the Hα line profile. From the EW, radial velocity and bisector variation with rotational phase, it is possible to detect the presence of prominence-like clouds (dense and cool material embedded in the hotter stellar corona). Different techniques are used to analyse the line profile: subtraction, bisector, etc. A discussion about different features present in the line profile is included." @default.
- W2155456044 created "2016-06-24" @default.
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- W2155456044 date "2005-03-01" @default.
- W2155456044 modified "2023-10-16" @default.
- W2155456044 title "ANALYSIS OF HIGH TEMPORAL RESOLUTION SPECTRA OF LATE-TYPE RAPID ROTATOR STARS: BD +201790" @default.
- W2155456044 hasPublicationYear "2005" @default.
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