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Photodynamical Modeling of the Fascinating Eclipses in the Triple-Star System KOI-126
Mitchell E. Yenawine, William F. Welsh, Jerome A. Orosz +7
We explore the fascinating eclipses and dynamics of the compact hierarchical triple star system KOI-126 (KIC 5897826). This system is comprised of a pair of M-dwarf stars (KOI-126…
Fast Transit Computation Using Tabulated Stellar Intensities
Donald R. Short, Jerome A. Orosz, Gur Windmiller +1
Limb darkening laws are convenient parameterizations of the stellar intensity center-to-limb variation, and their use is ubiquitous in eclipse and transit modeling. But they are no…
Kepler-1661 b: A Neptune-sized Kepler Transiting Circumbinary Planet around a Grazing Eclipsing Binary
Quentin J Socia, William F Welsh, Jerome A Orosz +7
We report the discovery of a Neptune-size (R_p = 3.87 +/- 0.06 R_Earth) transiting circumbinary planet, Kepler-1661 b, found in the Kepler photometry. The planet has a period of ~1…
Stellar Properties of KIC 8736245: An Eclipsing Binary with a Solar-type Star Leaving the Main Sequence
Tara Fetherolf, William F. Welsh, Jerome A. Orosz +5
There is a well-known stellar parameter discrepancy for late K and M dwarfs, in that the observed radii and temperatures are often respectively larger and cooler than predicted by…
Note on the Power-2 Limb Darkening Law
Donald R. Short, William F. Welsh, Jerome A. Orosz +2
Recently there has been a renewed interest in the power-2 limb darkening law for modeling exoplanet transits. This law provides a better match to the intensities generated by spher…
KIC 9832227: Using Vulcan Data to Negate The 2022 Red Nova Merger Prediction
Quentin J Socia, William F Welsh, Donald R Short +5
KIC 9832227 is a contact binary whose 11 hr orbital period is rapidly changing. Based on the apparent exponential decay of its period, the two stars were predicted to merge in earl…