Issue |
A&A
Volume 402, Number 3, May II 2003
First Science with the ODIN satellite
|
|
---|---|---|
Page(s) | 1033 - 1041 | |
Section | Stellar structure and evolution | |
DOI | https://doi.org/10.1051/0004-6361:20030304 | |
Published online | 23 April 2003 |
BV photometry of UX Ari in the period 1987–2002*
1
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: henry@schwab.tsuniv.edu
3
Senior Research Associate, Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA
Corresponding author: V. Aarum Ulvås, v.a.ulvas@astro.uio.no
Received:
29
August
2002
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We present 14.3 years of previously unpublished photometric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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