GSC2314-0530: the shortest-period eclipsing system with dMe components
Abstract
CCD photometric observations in VRI colours and spectroscopic observations of the newly discovered eclipsing binary GSC2314-0530 (NSVS6550671) with dMe components and a very short period of P = 0.192636d are presented. The simultaneous light-curve solution and radial velocity solution allow us to determine the global parameters of GSC2314-0530: T1 = 3735K T2 = 3106K pc. The chromospheric activity of its components is revealed by strong emission in the Hα line (with mean EW = 5Å) 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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- August 2010
- DOI:
- 10.1111/j.1365-2966.2010.16843.x
- arXiv:
- arXiv:1005.0260
- Bibcode:
- 2010MNRAS.406.2559D
- Keywords:
-
- stars: activity;
- binaries: eclipsing;
- binaries: spectroscopic;
- stars: fundamental parameters;
- stars: late-type;
- stars: low-mass;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 10 pages, 11 figures, MNRAS (accepted)