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

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: T 1= 3735 K; T 2= 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.