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arXiv · 1611.07614

K2-113b: A dense hot-Jupiter transiting a solar analogue

Néstor Espinoza·Markus Rabus·Rafael Brahm·Matías Jones·Andrés Jordán·Felipe Rojas·Holger Drass·Maja Vučković·Joel D. Hartman·James S. Jenkins·Cristián Cortés
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Abstract

We present the discovery of K2-113b, 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 $P=5.81760^{+0.00003}_{-0.00003}$ day orbit, has a radius of $0.93^{+0.10}_{-0.07}R_J$ and a mass of $1.29^{+0.13}_{-0.14}M_J$. With a density of $1.97^{+0.60}_{-0.53}$ 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 K2-113b should have a heavy element content on the order of $\sim$ 110 $M_{\oplus}$ or greater.

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Néstor Espinoza, Markus Rabus, Rafael Brahm, Matías Jones, Andrés Jordán, Felipe Rojas, Holger Drass, Maja Vučković, Joel D. Hartman, James S. Jenkins, Cristián Cortés. 2016-11-23. K2-113b: A dense hot-Jupiter transiting a solar analogue. https://doi.org/10.1093/mnras%2Fstx1862

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