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

The Rocky Planet Search (RPS) program is dedicated to a blind radial velocity(RV) search of planets around bright stars in the Northern hemisphere, usingthe high-resolution echelle spectrograph HARPS-N installed on the TelescopioNazionale Galileo (TNG).  The goal of this work is to revise and update the properties of threeplanetary systems by analysing the HARPS-N data with state-of-the-art stellaractivity mitigation tools. The stars considered are HD 99492 (83Leo B), HD147379 (Gl617 A) and HD 190007.  We employ a systematic process of data modelling, that we selected from thecomparison of different approaches. We use YARARA to remove instrumentalsystematics from the RV, and then use SPLEAF to further mitigate the stellarnoise with a multidimensional correlated noise model. We also search fortransit features in the Transiting Exoplanets Survey Satellite (TESS) data ofthese stars.  We report on the discovery of a new planet around HD 99492, namely HD 99492c, with an orbital period of 95.2 days and a minimum mass of msin i = 17.9M_Earth, and refine the parameters of HD 99492 b. We also update and refine theKeplerian solutions for the planets around HD 147379 and HD 190007, but do notdetect additional planetary signals. We discard the transiting geometry for theplanets, but stress that TESS did not exhaustively cover all the orbitalphases.  The addition of the HARPS-N data, and the use of advanced data analysistools, has allowed us to present a more precise view of these three planetarysystems. It demonstrates once again the importance of long observationalefforts such as the RPS program. Added to the RV exoplanet sample, theseplanets populate two apparently distinct populations revealed by a bimodalityin the planets minimum mass distribution. The separation is located between 30and 50 M_Earth.

A review of planetary systems around HD 99492, HD 147379 and HD 190007 with HARPS-N