Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. I. Confirmation of an Eccentric, Cool Jupiter With an Interior Earth-sized Planet Orbiting Kepler-1514. (arXiv:2012.04676v2 [astro-ph.EP] UPDATED)

Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. I. Confirmation of an Eccentric, Cool Jupiter With an Interior Earth-sized Planet Orbiting Kepler-1514. (arXiv:2012.04676v2 [astro-ph.EP] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Dalba_P/0/1/0/all/0/1">Paul A. Dalba</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kane_S/0/1/0/all/0/1">Stephen R. Kane</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Isaacson_H/0/1/0/all/0/1">Howard Isaacson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Giacalone_S/0/1/0/all/0/1">Steven Giacalone</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Howard_A/0/1/0/all/0/1">Andrew W. Howard</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rodriguez_J/0/1/0/all/0/1">Joseph E. Rodriguez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Vanderburg_A/0/1/0/all/0/1">Andrew Vanderburg</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Eastman_J/0/1/0/all/0/1">Jason D. Eastman</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kraus_A/0/1/0/all/0/1">Adam L. Kraus</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dupuy_T/0/1/0/all/0/1">Trent J. Dupuy</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Weiss_L/0/1/0/all/0/1">Lauren M. Weiss</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Schwieterman_E/0/1/0/all/0/1">Edward W. Schwieterman</a>

Despite the severe bias of the transit method of exoplanet discovery toward
short orbital periods, a modest sample of transiting exoplanets with orbital
periods greater than 100 days is known. Long-term radial velocity (RV) surveys
are pivotal to confirming these signals and generating a set of planetary
masses and densities for planets receiving moderate to low irradiation from
their host stars. Here, we conduct RV observations of Kepler-1514 from the Keck
I telescope using the High Resolution Echelle Spectrometer. From these data, we
measure the mass of the statistically validated giant ($1.108pm0.023$ $R_{rm
J}$) exoplanet Kepler-1514 b with a 218 day orbital period as $5.28pm0.22$
$M_{rm J}$. The bulk density of this cool ($sim$390 K) giant planet is
$4.82^{+0.26}_{-0.25}$ g cm$^{-3}$, consistent with a core supported by
electron degeneracy pressure. We also infer an orbital eccentricity of
$0.401^{+0.013}_{-0.014}$ from the RV and transit observations, which is
consistent with planet-planet scattering and disk cavity migration models. The
Kepler-1514 system contains an Earth-size, Kepler Object of Interest on a 10.5
day orbit that we statistically validate against false positive scenarios,
including those involving a neighboring star. The combination of the brightness
($V$=11.8) of the host star and the long period, low irradiation, and high
density of Kepler-1514 b places this system among a rare group of known
exoplanetary systems and one that is amenable to continued study.

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