Volume 369, Number 3, April III 2001
|Page(s)||960 - 964|
|Section||Interstellar and circumstellar matter|
|Published online||15 April 2001|
A Photometric study of the near-contact system RU Ursae Minoris*
Department of Astrophysics, Astronomy and Mechanics, Faculty of Physics, University of Athens, 157 84 Zographou, Athens, Greece
Corresponding author: P. G. Niarchos, email@example.com
Accepted: 23 January 2001
The near-contact system RU UMi with an F0 primary and a K5 secondary was observed in U, B and V wavelengths in May and July 1998, as well as in March, May and July 1999. Six new observed times of minima are given and a new ephemeris is proposed. The basic parameters of the system extracted by our observations were used for spot modelling of the light curves. A simple spot distribution was determined, based on a model with one relatively small cool spot on the surface of the secondary. Absolute elements were calculated and the evolutionary status was determined. Our data favor a semi-detached configuration, with the secondary filling its inner Roche lobe; the primary must also be near the limits of its lobe.
Key words: stars: binaries: eclipsing, starspots, stars: individual: RU UMi
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.