844 citations · 8.2k across the 86 of their papers we have counts for
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The chemical composition of red giants in 47 Tucanae I: Fundamental parameters and chemical abundance patterns
A. O. Thygesen, L. Sbordone, S. Andrievsky +9
Context: The study of chemical abundance patterns in globular clusters is of key importance to constrain the different candidates for intra-cluster pollution of light elements. Aim…
Stellar Chemical Abundances: In Pursuit of the Highest Achievable Precision
M. Bedell, J. Melendez, J. Bean +3
The achievable level of precision on photospheric abundances of stars is a major limiting factor on investigations of exoplanet host star characteristics, the chemical histories of…
The Solar Twin Planet Search. I. Fundamental parameters of the stellar sample
I. Ramirez, J. Melendez, J. Bean +10
We are carrying out a search for planets around a sample of solar twin stars using the HARPS spectrograph. The goal of this project is to exploit the advantage offered by solar twi…
High precision abundances in the 16 Cyg binary system: a signature of the rocky core in the giant planet
Marcelo Tucci Maia, Jorge Melendez, Ivan Ramirez
We study the stars of the binary system 16 Cygni to determine with high precision their chemical composition. Knowing that the component B has a detected planet of at least 1.5 Jup…
18 Sco: a solar twin rich in refractory and neutron-capture elements. Implications for chemical tagging
J. Melendez, I. Ramirez, A. I. Karakas +12
We study with unprecedented detail the chemical composition and stellar parameters of the solar twin 18 Sco in a strictly differential sense relative to the Sun. Our study is mainl…
HIP 114328: a new refractory-poor and Li-poor solar twin
Jorge Melendez, Lucas Schirbel, TalaWanda R. Monroe +3
[Context]. The standard solar model fails to predict the very low lithium abundance in the Sun, which is much lower than the proto-solar nebula. This Li problem has been debated fo…