Volume 380, Number 2, December III 2001
|Page(s)||533 - 543|
|Section||Interstellar and circumstellar matter|
|Published online||15 December 2001|
The cataclysmic variable CW 1045+525: A secondary-dominated dwarf nova?
Departamento de Física y Matemáticas, Grupo de Astronomía, Universidad de Concepción, Casilla 160-C, Concepción, Chile
2 Dipartimento di Astronomia, Università di Padova, Vicolo dell'Osservatorio 2, 35122 Padova, Italy
3 Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire, 03755 USA
4 Astronomisches Institut, Ruhr-Universität, 44780 Bochum, Germany
5 European Southern Observatory, Casilla 19001, Santiago 19, Chile
6 Osservatorio Astronómico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
Corresponding author: C. Tappert, email@example.com
Accepted: 10 October 2001
We present spectroscopic and photometric observations of the cataclysmic variable CW 1045+525. Both the optical spectrum and the photometric lightcurve show a strong contribution of a K5V-M0V secondary. We derive an orbital period d by measuring the radial velocities of the absorption lines of the secondary. The period and spectral type of the secondary suggest a distance of 350-700 pc. There is evidence for additional sources of line- and continuum emission, but no direct evidence of an accretion disc. We discuss several scenarios for the nature of CW 1045+525 on the basis of our results, finding a dwarf nova classification to be the most probable, although not completely satisfying, explanation for the observed characteristics.
Key words: stars: individual: CW 1045+525 / stars: novae, cataclysmic variables / stars: fundamental parameters / binaries: general
© 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.