English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Despite the severe bias of the transit method of exoplanet discovery towardshort orbital periods, a modest sample of transiting exoplanets with orbitalperiods greater than 100 days is known. Long-term radial velocity (RV) surveysare pivotal to confirming these signals and generating a set of planetarymasses and densities for planets receiving moderate to low irradiation fromtheir host stars. Here, we conduct RV observations of Kepler-1514 from the KeckI telescope using the High Resolution Echelle Spectrometer. From these data, wemeasure the mass of the statistically validated giant ($1.108\pm0.023$ $R_{\rmJ}$) exoplanet Kepler-1514 b with a 218 day orbital period as $5.28\pm0.22$$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 byelectron degeneracy pressure. We also infer an orbital eccentricity of$0.401^{+0.013}_{-0.014}$ from the RV and transit observations, which isconsistent with planet-planet scattering and disk cavity migration models. TheKepler-1514 system contains an Earth-size, Kepler Object of Interest on a 10.5day 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 highdensity of Kepler-1514 b places this system among a rare group of knownexoplanetary systems and one that is amenable to continued study.

the astronomical journal

Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. I. Confirmation  of an Eccentric, Cool Jupiter With an Interior Earth-sized Planet Orbiting  Kepler-1514