An extreme-mass ratio, short-period eclipsing binary consisting of a B dwarf primary and a pre-main-sequence M star companion discovered by KELT

  title={An extreme-mass ratio, short-period eclipsing binary consisting of a B dwarf primary and a pre-main-sequence M star companion discovered by KELT},
  author={Daniel J. Stevens and George Zhou and Marshall C. Johnson and Aaron C. Rizzuto and Joseph E. Rodriguez and Allyson Bieryla and Steven Villanueva and Jr. and Jason T. Wright and B. Scott Gaudi and David W. Latham and Thomas G. Beatty and Michael B. Lund and Robert J. Siverd and Adam L. Kraus and Perry L. Berlind and M. Calkins and Gilbert A. Esquerdo and Rudolf B. Kuhn and Joshua A. Pepper},
  journal={Monthly Notices of the Royal Astronomical Society},
  • D. Stevens, G. Zhou, J. Pepper
  • Published 14 October 2019
  • Physics, Geology
  • Monthly Notices of the Royal Astronomical Society
We present the discovery of KELT J072709 + 072007 (HD 58730), a very low mass ratio (q ≡ M2/M1 ≈ 0.07) eclipsing binary (EB) identified by the Kilodegree Extremely Little Telescope (KELT) survey. We present the discovery light curve and perform a global analysis of four high-precision ground-based light curves, the Transiting Exoplanets Survey Satellite (TESS) light curve, radial velocity (RV) measurements, Doppler Tomography (DT) measurements, and the broad-band spectral energy distribution… 

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