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

In this paper, we aim to characterize a transiting planetary candidate in thesouthern skies found in the combined MASCARA and bRing data sets of HD 85628,an A3V star of V = 8.2 mag at a distance 172 pc, to confirm its planetarynature. The candidate was originally detected in data obtained jointly with theMASCARA and bRing instruments using a BLS search for transit events. Furtherphotometry was taken by the 0.7 m CHAT, and radial velocity measurements withFIDEOS on the ESO 1.0 m Telescope. High resolution spectra during a transitwere taken with CHIRON on the SMARTS 1.5 m telescope to target the Dopplershadow of the candidate. We confirm the existence of a hot Jupiter transitingthe bright A3V star HD 85628, which we co-designate as MASCARA-4b and bRing-1b.It is in a 2.824 day orbit, with an estimated planet radius of $1.53^{0.07}_{0.04}$ $R_{\rm{Jup}}$ and an estimated planet mass of $3.1 \pm 0.9$$M_{\rm{Jup}}$, putting it well within the planet mass regime.. The CHATobservations show a partial transit, reducing the probability that the transitwas around a faint background star. The CHIRON observations show a clearDoppler shadow, implying that the transiting object is in a retrograde orbitwith $|\lambda| = 247.5 \pm 1.6 $\textdegree. The planet orbits at at adistance of 0.047 $\pm$ 0.004 AU from the star and has a zero-albedoequilibrium temperature of 2100 $\pm$ 100 K. In addition, we find that HD 85628has a previously unreported stellar companion star in the Gaia DR2 datademonstrating common proper motion and parallax at 4.3 arcsecond separation(projected separation $\sim$740 AU), and with absolute magnitude consistentwith being a K/M dwarf.

MASCARA-4 b/bRing-1b - A retrograde hot Jupiter around the bright A3V star HD 85628