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73 papers · 1 filter
Bayesian peak-bagging of solar-like oscillators using MCMC: A comprehensive guide
R. Handberg, T. L. Campante
Context: Asteroseismology has entered a new era with the advent of the NASA Kepler mission. Long and continuous photometric observations of unprecedented quality are now available…
Measuring Be depletion in cool stars with exoplanets
Elisa Delgado Mena, Garik Israelian, Jonay I. González Hernández +2
We present new UVES spectra of a sample of 14 mostly cool unevolved stars with planetary companions with the aim of studying possible differences in Be abundance with respect to st…
Asteroseismic modelling of the solar-type subgiant star Hydri
I. M. Brandão, G. Dogan, J. Christensen-Dalsgaard +6
Comparing models and data of pulsating stars is a powerful way to understand the stellar structure better.βHyi is an evolved solar-type pulsator with mixed modes in its frequency s…
The HARPS search for southern extra-solar planets: XXVI: Seven new planetary systems
C. Moutou, M. Mayor, G. Lo Curto +10
We are conducting a planet search survey with HARPS since seven years. The volume-limited stellar sample includes all F2 to M0 main-sequence stars within 57.5 pc, where extrasolar…
A Survey of M Stars in the Field of View of Kepler Space Telescope
Mahmoudreza Oshagh, Nader Haghighipour, Nuno C. Santos
M dwarfs constitute more than 70% of the stars in the solar neighborhood. They are cooler and smaller than Sun-like stars and have less-massive disks which suggests that planets ar…
Oscillations and magnetic fields in the G8 star EK Eridani
T. H. Dall, M. Cunha, K. G. Strassmeier +2
Asteroseismology can provide information that is otherwise not easily accessible, like the stellar mass and the evolutionary stage. Strong magnetic fields are usually accompanied b…