109 citations · 814 across the 24 of their papers we have counts for
4 papers · 1 filter
On Lithium-Rich Red Giants. II. Engulfment on the Giant Branch of Trumpler 20
Claudia Aguilera-Gómez, Julio Chanamé, Marc H. Pinsonneault +1
The Gaia-ESO survey recently reported on a large sample of lithium (Li) abundance determinations for evolved stars in the rich open cluster Trumpler 20. They argue for a scenario w…
Wide binaries in ultra-faint galaxies: a window onto dark matter on the smallest scales
Jorge Peñarrubia, Aaron D. Ludlow, Julio Chanamé +1
We carry out controlled -body simulations that follow the dynamical evolution of binary stars in the dark matter (DM) haloes of ultra-faint dwarf spheroidals (dSphs). We find th…
On Lithium-Rich Red Giants. I. Engulfment of Sub-Stellar Companions
Claudia Aguilera-Gómez, Julio Chanamé, Marc Pinsonneault +1
A small fraction of red giants are known to be lithium (Li) rich, in contradiction with expectations from stellar evolutionary theory. A possible explanation for these atypical gia…
Discovery and Validation of a High-Density sub-Neptune from the K2 Mission
Néstor Espinoza, Rafael Brahm, Andrés Jordán +12
We report the discovery of BD+20594b, a high density sub-Neptune exoplanet, made using photometry from Campaign 4 of the two-wheeled Kepler (K2) mission, ground-based radial veloci…