960 citations · 4.4k across the 30 of their papers we have counts for
13 papers · 1 filter
Abundance ratios \& ages of stellar populations in HARPS-GTO sample
E. Delgado Mena, M. Tsantaki, V. Zh. Adibekyan +4
In this work we present chemical abundances of heavy elements (Z28) for a homogeneous sample of 1059 stars from HARPS planet search program. We also derive ages using parallaxes…
SWEET-Cat update and FASMA. A new minimization procedure for stellar parameters using high-quality spectra
D. T. Andreasen, S. G. Sousa, M. Tsantaki +6
Context: Thanks to the importance that the star-planet relation has to our understanding of the planet formation process, the precise determination of stellar parameters for the ev…
CNO behaviour in planet-harbouring stars. II. Carbon abundances in stars with and without planets using the CH band
L. Suárez-Andrés, G. Israelian, J. I. González Hernández +4
Context. Carbon, oxygen and nitrogen (CNO) are key elements in stellar formation and evolution, and their abundances should also have a significant impact on planetary formation an…
Abundance trend with condensation temperature for stars with different Galactic birth places
V. Adibekyan, E. Delgado-Mena, P. Figueira +9
During the past decade, several studies reported a correlation between chemical abundances of stars and condensation temperature (also known as Tc trend). However, the real astroph…
Searching for Li-rich giants in a sample of 12 open clusters: Li enhancement in two stars with substellar companions
E. Delgado Mena, M. Tsantaki, S. G. Sousa +6
The aim of this work is to search for Li-rich giants in a sample of clusters where planets have been searched, thus we can study the planet engulfment scenario to explain Li replen…
Li abundances in F stars: planets, rotation and galactic evolution
E. Delgado Mena, S. Bertrán de Lis, V. Zh. Adibekyan +7
We find that hot jupiter host stars within the T range 5900-6300K show lower Li abundances, by 0.14 dex, than stars without detected planets. This offset has a signi…