{
  "id": "1906.08205",
  "version": "v1",
  "published": "2019-06-19T16:28:35.000Z",
  "updated": "2019-06-19T16:28:35.000Z",
  "title": "Absolute dimensions of the low-mass eclipsing binary system NSVS 10653195",
  "authors": [
    "Ramon Iglesias-Marzoa",
    "Maria J. Arevalo",
    "Mercedes Lopez-Morales",
    "Guillermo Torres",
    "Carlos Lazaro",
    "Jeffrey L. Coughlin"
  ],
  "comment": "14 pages, 8 figures, 12 tables. Accepted for publication in A&A. Tables 1, 2, 3 and 7 are only available in electronic form at the CDS (Strasbourg)",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "Low-mass stars in eclipsing binary systems show radii larger and effective temperatures lower than theoretical stellar models predict for isolated stars with the same masses. Eclipsing binaries with low-mass components are hard to find due to their low luminosity. As a consequence, the analysis of the known low-mass eclipsing systems is key to understand this behavior. We developed a physical model of the LMDEB system NSVS 10653195 to accurately measure the masses and radii of the components. We obtained several high-resolution spectra in order to fit a spectroscopic orbit. Standardized absolute photometry was obtained to measure reliable color indices and to measure the mean Teff of the system in out-of-eclipse phases. We observed and analyzed optical VRI and infrared JK band differential light-curves which were fitted using PHOEBE. A Markov-Chain Monte Carlo (MCMC) simulation near the solution found provides robust uncertainties for the fitted parameters. NSVS 10653195 is a detached eclipsing binary composed of two similar stars with masses of M1=0.6402+/-0.0052 Msun and M2=0.6511+/-0.0052 Msun and radii of R1=0.687^{+0.017}_{-0.024} Rsun and R2=0.672^{+0.018}_{-0.022} Rsun. Spectral types were estimated to be K6V and K7V. These stars rotate in a circular orbit with an orbital inclination of i=86.22+/-0.61 degrees and a period of P=0.5607222(2) d. The distance to the system is estimated to be d=135.2^{+7.6}_{-7.9} pc, in excellent agreement with the value from Gaia. If solar metallicity were assumed, the age of the system would be older than log(age)~8 based on the Mbol-log Teff diagram. NSVS 10653195 is composed of two oversized and active K stars. While their radii is above model predictions their Teff are in better agreement with models.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-06-19T16:28:35.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "low-mass eclipsing binary system nsvs",
      "absolute dimensions",
      "jk band differential light-curves"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}