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New Mass and Radius Constraints on the LHS 1140 Planets -- LHS 1140 b is Either a Temperate Mini-Neptune or a Water World
Charles Cadieux, Mykhaylo Plotnykov, René Doyon +43
The two-planet transiting system LHS 1140 has been extensively observed since its discovery in 2017, notably with , HST, TESS, and ESPRESSO, placing strong constraints on…
Chemical abundances of neutron capture elements in exoplanet-hosting stars
E. Delgado Mena, V. Zh. Adibekyan, P. Figueira +7
To understand the formation and composition of planetary systems it is important to study their host stars composition since both are formed in the same stellar nebula. In this wor…
From stellar to planetary composition: Galactic chemical evolution of Mg/Si mineralogical ratio
V. Adibekyan, N. C. Santos, P. Figueira +6
The main goal of this work is to study element ratios that are important for the formation of planets of different masses. We study potential correlations between the existence of…
Chemical abundances of stars with brown-dwarf companions
D. Mata Sánchez, J. I. González Hernández, G. Israelian +3
It is well-known that stars with giant planets are on average more metal-rich than stars without giant planets, whereas stars with detected low-mass planets do not need to be metal…
Li depletion in solar analogues with exoplanets: Extending the sample
E. Delgado Mena, G. Israelian, J. I. González Hernández +8
We want to study the effects of the formation of planets and planetary systems on the atmospheric Li abundance of planet host stars. In this work we present new determinations of l…
Orbital and physical properties of planets and their hosts: new insights on planet formation and evolution
V. Zh. Adibekyan, P. Figueira, N. C. Santos +7
We explore the relations between physical and orbital properties of planets and properties of their host stars to identify the main observable signatures of the formation and evolu…