Results 151 to 160 of about 4,300 (180)
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Astronomische Nachrichten, 2002
I present a literature survey of the currently available Doppler images of cool stars. The 65 individual stars with Doppler images consist of 29 single stars and 36 components in close binaries. Out of the total, 31 were observed only once but 12 stars are (or were) being monitored for years. Each image for each star is identified with the time when it
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I present a literature survey of the currently available Doppler images of cool stars. The 65 individual stars with Doppler images consist of 29 single stars and 36 components in close binaries. Out of the total, 31 were observed only once but 12 stars are (or were) being monitored for years. Each image for each star is identified with the time when it
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Astrophysics, 2014
Long-term, multiband photometric observations of 8 young PMS stars are used to construct models for their starspots. It is shown that the average density of starspots is up to 40 % of the total surface of a star (V824 Ara), while the difference in temperatures between a quiet photosphere and a spot ranges from 870 K (AB Dor) to 1700-1800 K (PZ Tel ...
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Long-term, multiband photometric observations of 8 young PMS stars are used to construct models for their starspots. It is shown that the average density of starspots is up to 40 % of the total surface of a star (V824 Ara), while the difference in temperatures between a quiet photosphere and a spot ranges from 870 K (AB Dor) to 1700-1800 K (PZ Tel ...
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Discovery of starspots on Vega
Astronomy and Astrophysics, 2015Context. The theoretically studied impact of rapid rotation on stellar evolution needs to be compared with these results of high-resolution spectroscopy-velocimetry observations. Early-type stars present a perfect laboratory for these studies. The prototype A0 star Vega has been extensively monitored in recent years in spectropolarimetry.
Böhm, T. +10 more
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The 1973 RT Andromedae Starspot
Publications of the Astronomical Society of Australia, 1991AbstractAn analysis of 1973 RT Andromedae B and V light curves is presented. The results are fitted into a spot evolution sequence found in a previous study which used the same technique on different data. The new values of the system’s physical parameters are in general agreement with the earlier ones.
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Starspot mapping with robotic telescopes
Astronomische Nachrichten, 2002Robotic telescopes for photometry and imaging have been around for several years. They have been very valuable to monitor light variations due to changing spot patterns on active stars. Two new spectroscopic robotic telescopes will come online in the near future, one in Tenerife and one in Arizona.
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KIC 5359678: a detached eclipsing binary with starspots
Monthly Notices of the Royal Astronomical Society, 2021Jiaxin Wang, Jian-Ning Fu, Hubiao Niu
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The connection between starspots and superflares: a case study of two stars
Monthly Notices of the Royal Astronomical Society: Letters, 2023Alexandre AraÚjo, Adriana S Valio
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