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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present the detection and characterization of the transiting warm JupiterKOI-12b, first identified with Kepler with an orbital period of 17.86 days. Wecombine the analysis of Kepler photometry with Doppler spectroscopy andline-profile tomography of time-series spectra obtained with the SOPHIEspectrograph to establish its planetary nature and derive its properties. Toderive reliable estimates for the uncertainties on the tomographic modelparameters, we devised an empirical method to calculate statisticallyindependent error bars on the time-series spectra. KOI-12b has a radius of1.43$\pm$0.13$ R_\mathrm{Jup}$ and a 3$\sigma$ upper mass limit of10$M_\mathrm{Jup}$. It orbits a fast-rotating star ($v$sin$i_{\star}$ =60.0$\pm$0.9 km s$^{-1}$) with mass and radius of 1.45$\pm$0.09$M_\mathrm{Sun}$ and 1.63$\pm$0.15 $R_\mathrm{Sun}$, located at 426$\pm$40 pcfrom the Earth. Doppler tomography allowed a higher precision on the obliquityto be reached by comparison with the analysis of the Rossiter-McLaughlin radialvelocity anomaly, and we found that KOI-12b lies on a prograde, slightlymisaligned orbit with a low sky-projected obliquity $\lambda$ =12.6$\stackrel{+3.0}{_{-2.9}}^\circ$. The properties of this planetary system,with a 11.4 magnitude host-star, make of KOI-12b a precious target for futureatmospheric characterization.

SOPHIE velocimetry of Kepler transit candidates XVI. Tomographic  measurement of the low obliquity of KOI-12b, a warm Jupiter transiting a fast  rotator