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Spot activity of the new WUMa-type variable GSC3599-2569

Spot activity of the new WUMa-type variable GSC3599-2569 A new A-subtype W UMa eclipsing binary is found in the vicinity of the young bright massive variable V 645 Cyg. Over the four-year long observation interval (2009–2013), the star’s light curve shifted along the magnitude axis with an amplitude of 0ṃ08, and the depths of its minima varied by up to 0ṃ055. The parameters of the components of this new eclipsing system are estimated, and indications of long-term flux variation with a period of 940 days are found. It is suggested that such variations can be explained by the spot activity of the components. The parameters of the spot structure are determined for the case of maximum spot activity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Astrophysical Bulletin Springer Journals

Spot activity of the new WUMa-type variable GSC3599-2569

Astrophysical Bulletin , Volume 70 (1) – Feb 28, 2015

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References (2)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Physics; Astronomy, Astrophysics and Cosmology
ISSN
1990-3413
eISSN
1990-3421
DOI
10.1134/S1990341315010125
Publisher site
See Article on Publisher Site

Abstract

A new A-subtype W UMa eclipsing binary is found in the vicinity of the young bright massive variable V 645 Cyg. Over the four-year long observation interval (2009–2013), the star’s light curve shifted along the magnitude axis with an amplitude of 0ṃ08, and the depths of its minima varied by up to 0ṃ055. The parameters of the components of this new eclipsing system are estimated, and indications of long-term flux variation with a period of 940 days are found. It is suggested that such variations can be explained by the spot activity of the components. The parameters of the spot structure are determined for the case of maximum spot activity.

Journal

Astrophysical BulletinSpringer Journals

Published: Feb 28, 2015

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