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

Abstract

CCD photometric observations in VRI colors and spectroscopic observations of the newly discovered eclipsing binary GSC 2314-0530 (NSVS 6550671) with dMe components and very short period of P=0.192636 days are presented. The simultaneous light-curve solution and radial velocity solution allows to determine the global parameters of GSC 2314-0530: T_{1}=3735 K; T_{2}=3106 K; M_{1}=0.51 M_sun; M_{2}=0.26 M_sun; R_{1}=0.55 R_sun; R_{2}=0.29 R_sun; L_{1}=0.053 L_sun; L_{2}=0.007 L_sun; i=72.5 degr; a=1.28 R_sun; d=59 pc. The chromospheric activity of its components is revealed by strong emission in the H_alpha line (with mean EW=5 A) and observed several flares. Empirical relations mass-M_{bol}, mass-radius and mass-temperature are derived on the basis of the parameters of known binaries with low-mass dM components.

arXiv comment10 pages, 11 figures, MNRAS (accepted)

References in corpus (23)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• The WASP Project and the SuperWASP Cameras
• A Computational Guide to Physics of Eclipsing Binaries. Paper I. Demonstrations and Perspectives
• Homogeneous Photometry for Star Clusters and Resolved Galaxies. II. Photometric Standard Stars
• Northern Sky Variability Survey (NSVS): Public data release
• Absolute dimensions of the M-type eclipsing binary YY Geminorum (Castor C): a challenge to evolutionary models in the lower main-sequence
• Contact Binaries with Additional Components.I. The Extant Data
• The 0.4-Mo Eclipsing Binary CU Cancri: Absolute Dimensions, Comparison with Evolutionary Models and Possible Evidence for a Circumstellar Dust Disk
• New periodic variable stars coincident with ROSAT sources discovered using SuperWASP
• The short period end of the contact binary period distribution based on the All Sky Automated Survey (ASAS)
• GJ 3236: a new bright, very low-mass eclipsing binary system discovered by the MEarth observatory
• A Comprehensive Catalogue of Variable Stars in the field of 47 Tucanae
• The shortest-period M-dwarf eclipsing system BW3 V38
• A Systematic Study Of X-Ray Variability In The ROSAT All-Sky Survey
• The shortest period M-dwarf eclipsing system BW3 V38, II: determination of absolute elements
• The shortest period field contact binary
• A New Low-Mass Eclipsing Binary from SDSS-II
• A New Detached M Dwarf Eclipsing Binary
• Photospheric and chromospheric activity in V405 And: An M dwarf binary with components on the two sides of the full convection limit
• 2MASS J01542930+0053266 : A New Eclipsing M-dwarf Binary System
• A new detached K7 dwarf eclipsing binary system
• NSVS06507557; a low-mass double-lined eclipsing binary
• NSVS01031772: A New 0.50+0.54 Msun Detached Eclipsing Binary

Cited by in corpus (29)

• HATS-6b: A Warm Saturn Transiting an Early M Dwarf Star, and a Set of Empirical Relations for Characterizing K and M Dwarf Planet Hosts
• Exploring the Variable Sky with LINEAR. III. Classification of Periodic Light Curves
• Low-Mass Eclipsing Binaries in the Initial Kepler Data Release
• Short period eclipsing binary candidates identified using SuperWASP
• Period and period change measurements for 143 SuperWASP eclipsing binary candidates near the short-period limit and discovery of a doubly eclipsing quadruple system
• The short-period limit of contact binaries
• Post Common Envelope Binaries from SDSS. XV: Accurate stellar parameters for a cool 0.4-solar mass white dwarf and a 0.16-solar mass M-dwarf in a 3 hour eclipsing binary
• Four ultra-short period eclipsing M-dwarf binaries in the WFCAM Transit Survey
• The DWARF project: Eclipsing binaries - precise clocks to discover exoplanets
• Ultra-short Period Binaries from the Catalina Surveys
• Ultrashort-period MS eclipsing systems. New observations and light curve solutions of six NSVS binaries
• A highly unequal-mass eclipsing M-dwarf binary in the WFCAM Transit Survey
• A Possible Alignment Between the Orbits of Planetary Systems and their Visual Binary Companions
• The Very Short Period M Dwarf Binary SDSS J001641-000925
• Masses and radii of four very low mass stars in F+M eclipsing binary systems
• An Updated Catalog of 4680 Northern Eclipsing Binaries with Algol-Type light curve morphology in the Catalina Sky Surveys
• Very Low-Mass Stellar and Substellar Companions to Solar-Like Stars from MARVELS I: A Low Mass Ratio Stellar Companion to TYC 4110-01037-1 in a 79-day Orbit
• Observations and light curve solutions of ultrashort-period eclipsing binaries
• Discovery of the Exceptionally Short Period Ultracool Dwarf Binary LP 413-53AB
• Frequent flare events on the short-period M-type eclipsing binary BX Tri
• Light curve solutions of the ultrashort-period $Kepler$ binaries
• Light curve solutions of six eclipsing binaries at the lower limit of periods of the W UMa stars
• An M dwarf Companion to an F-type Star in a young main-sequence binary
• NSVS07394765: A new low-mass eclipsing binary below 0.6 M_sun
• Photometric light curve solutions of three ultra-short period eclipsing binaries
• A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity
• X-ray and UV emission of the ultrashort-period, low-mass eclipsing binary system BX Tri
• Long-term Spot Stability in the Post-common-envelope Binary QS Vir
• Modelling of an eclipsing RS CVn-binary: V405 And