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- W1970531975 abstract "We analysed all the existing photometric observations of V833 Tau and found long-term variability on time scales of ≈70 years, 6.5 years and 2.4 years. Using V and IC-band data from 1990-2000, we obtained starspot surface distributions from 20 suitable light curves. We found that the spot-area changes generally follow the long-term light variations. Spot temperatures are determined for each of the datasets and an average value of K relative to the photosphere is found. This value agrees with previous results from TiO modeling ( K). Small scale spot temperature and area changes are recovered during 1997-1999, that we explain with a variable spot/faculae ratio. A powerful flare in was observed in 1993 November. A 10 000 K fit yielded a total emitted flare energy of more than 1034 ergs from an area of about 1.3% of the stellar surface, 60% of it in the bands. The flare characteristics are compared to another, 100-times smaller flare observed earlier in 1983." @default.
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- W1970531975 date "2001-06-01" @default.
- W1970531975 modified "2023-10-17" @default.
- W1970531975 title "Time-series photometric spot modeling" @default.
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- W1970531975 doi "https://doi.org/10.1051/0004-6361:20010362" @default.
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