Volume 402, Number 3, May II 2003
First Science with the ODIN satellite
|Page(s)||1033 - 1041|
|Section||Stellar structure and evolution|
|Published online||23 April 2003|
Institute of Theoretical Astrophysics, University of Oslo, PO Box 1029 Blindern, 0315 Oslo, Norway
2 Center of Excellence in Information Systems, Tennessee State University, 330 10th Avenue North, Nashville, TN 37203, USA e-mail: firstname.lastname@example.org
3 Senior Research Associate, Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA
Corresponding author: V. Aarum Ulvås, email@example.com
Accepted: 21 February 2003
We present 14.3 years of previously unpublished photometric observations of UX Ari. The observations were obtained between 1987.9 and 2002.2 using the T3 0.4-metre Automatic Photoelectric Telescope at Fairborn Observatory and consist of 1228 B band and 1213 V band measurements. The comparison star was 62 Ari. We have analyzed the new data together with previously published photometric observations. The V magnitude shows variations with dominant periods of about 12 and 25 years, where the longest period seems to correspond to an activity cycle. The previously reported anticorrelation between the colour and V magnitude variations is confirmed.
Key words: stars: activity / binaries: spectroscopic / stars: individual: UX Ari / stars: late-type / starspots
© ESO, 2003
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