Journal Article

GSC 2314−0530: the shortest-period eclipsing system with dMe components

Dinko P. Dimitrov and Diana P. Kjurkchieva

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 406, issue 4, pages 2559-2568
Published in print August 2010 | ISSN: 0035-8711
Published online August 2010 | e-ISSN: 1365-2966 | DOI:
GSC 2314−0530: the shortest-period eclipsing system with dMe components

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CCD photometric observations in VRI colours and spectroscopic observations of the newly discovered eclipsing binary GSC 2314−0530 (NSVS 6550671) with dMe components and a very short period of P= 0.192 636 d are presented. The simultaneous light-curve solution and radial velocity solution allow us to determine the global parameters of GSC 2314−0530: T1= 3735 K; T2= 3106 K; pc. The chromospheric activity of its components is revealed by strong emission in the Hα line (with mean EW= 5 Å) and several observed flares. Empirical relations for mass–, mass–radius and mass–temperature are derived on the basis of the parameters of known binaries with low-mass dM components.

Keywords: stars: activity; binaries: eclipsing; binaries: spectroscopic; stars: fundamental parameters; stars: late-type; stars: low-mass

Journal Article.  4845 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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