* Astronomy

Title: EPIC 220504338b: A dense hot-Jupiter transiting a solar analogue
Author: Néstor Espinoza, Markus Rabus, Rafael Brahm, Matías Jones, Andrés Jordán, Felipe Rojas, Holger Drass, Maja Vuckovic, Joel D. Hartman, James S. Jenkins, Cristián Cortés

We present the discovery of EPIC 220504338b, a dense hot-Jupiter discovered using photometry from Campaign 8 of the Kepler-2 (K2) mission and high-resolution spectroscopic follow up obtained with the FEROS spectrograph. The planet orbits a V=13.68 solar analogue in a P=5.81771^{+0.00004}_{-0.00004} day orbit, has a radius of 0.91^{+0.10}_{-0.07}R_J and a mass of 1.28^{+0.11}_{-0.12}M_J. With a density of 2.08^{+0.66}_{-0.57} gr/cm^3, the planet is among the densest systems known having masses below 2 M_J and T_eq>1000, and is just above the temperature limit at which inflation mechanisms are believed to start being important. Based on its mass and radius, we estimate that EPIC 220504338b should have a heavy element content on the order of ~ 110 Earth masses or greater.

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