The CORALIE survey for southern extra-solar planets. XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE

TL;DR

This paper reports 16 new exoplanet candidates discovered with CORALIE, including Jupiter-like planets, hot Jupiters, and multi-planet systems, highlighting their orbital characteristics and system dynamics.

Contribution

It provides orbital solutions and detailed analysis for 16 previously unpublished exoplanet candidates, including complex multi-planet systems.

Findings

10 Jupiter-like planets with intermediate to long periods and eccentric orbits.

Discovery of a hot Jupiter, HD83443, with a short orbital period.

Identification of multi-planet systems with resonant and hierarchical configurations.

Abstract

This paper summarizes the information gathered for 16 still unpublished exoplanet candidates discovered with the CORALIE echelle spectrograph mounted on the Euler Swiss telescope at La Silla Observatory. Amongst these new candidates, 10 are typical extrasolar Jupiter-like planets on intermediate- or long-period (100<P<1350d) and fairly eccentric (0.2<e<0.5) orbits (HD19994, HD65216, HD92788, HD111232, HD114386, HD142415, HD147513, HD196050, HD216437, HD216770). Two of these stars are in binary systems. The next 3 candidates are shorter-period planets (HD6434, HD121504) with lower eccentricities among which a hot Jupiter (HD83443). More interesting cases are finally given by the multiple-planet systems HD82943 and HD169830. The former is a resonant P_2/P_1=2/1 system in which planet-planet interactions are influencing the system evolution. The latter is more hierarchically structured.