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Starspot Activity of V711 Tau from November to December 2005

Published online by Cambridge University Press:  09 August 2007

Sheng-hong Gu ,
Andrew Collier Cameron ,
J.R. Barnes  and
Jia-yan Yang
Sheng-hong Gu
Affiliation:
National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, Yunnan Province, China email: shenghonggu@ynao.ac.cn
Andrew Collier Cameron
Affiliation:
SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Fife, UK
J.R. Barnes
Affiliation:
School of Physics, Astronomy and Mathematics, University of Hertfordshire, College Lane, Hatfield, UK
Jia-yan Yang
Affiliation:
National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, Yunnan Province, China email: shenghonggu@ynao.ac.cn
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Abstract

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Two new high-resolution spectroscopic datasets of the active binary V711 Tau are analyzed here. Using the Least-Squares Deconvolution method, we have derived the time series profiles of V711 Tau with high signal-to-noise ratio, which have been used to reconstruct the starspot patterns for its two components by means of the Doppler imaging code DoTS. The results show that the high latitude spots are main features for the primary, the low latitude spots are clear for the secondary in both of two observing runs, and the starspot pattern changes obviously during one month. The lifetime of intermediate-low latitude spots is shorter than the high latitude spots for the primary, the low latitude spots of the secondary seem to have a longer lifetime.

Keywords

Stellar activityStarspotsDoppler imaging
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S240: Binary Stars as Critical Tools & Tests in Contemporary Astrophysics , August 2006 , pp. 714 - 718
Copyright
Copyright © International Astronomical Union 2007

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