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- Universidade do PortoPT298 papers
- Institute of Astrophysics and Space SciencesPT262 papers
- Centre National de la Recherche ScientifiqueFR220 papers
- University of GenevaCH195 papers
- Instituto de Astrofísica de CanariasES189 papers
- Universidad de La LagunaES167 papers
- Osservatorio Astrofisico di TorinoIT156 papers
- University of LisbonPT156 papers
- Institut d'Astrophysique de ParisFR151 papers
- Trieste Astronomical ObservatoryIT147 papers
- Brera Astronomical ObservatoryIT138 papers
- National Institute for AstrophysicsIT137 papers
37 papers · 1 filter
Unveiling the nature of HE 0107-5240
E. Caffau, M. Steffen, P. Molaro +27
The vast majority of the most iron-poor stars in the Galaxy exhibit a strong carbon enhancement, with C/H ratios only about two orders of magnitude below solar. This unusual chemic…
Stellar-activity analysis of the nearby M dwarf GJ 526. Multi-dimensional Gaussian-process modelling of RV, FWHM and S-index
A. K. Stefanov, J. I. González Hernández, A. Suárez Mascareño +17
M dwarfs are the most abundant stars in the Galaxy, and their low masses make them natural favourites for exoplanet radial-velocity (RV) searches. Nevertheless, these stars often d…
Helioseismic inference of the solar radiative opacity
Gaël Buldgen, Jean-Christophe Pain, Philippe Cossé +18
The Sun is the most studied of all stars, and thus constitutes a benchmark for stellar models. However, our vision of the Sun is still incomplete, as illustrated by the current deb…
The unexpected optical and ultraviolet variability of the standard star Sex (HD 87887)
Richard Monier, Dominic M. Bowman, Yveline Lebreton +1
The analysis of the available TESS light curves of Sex (HD 87887) reveals low-frequency pulsations with a period of about 9.1 hours in this spectroscopic A0 III standard star.…
Glitches in solar-like oscillating F-type stars: Theoretical signature of the base of the convective envelope on the ratios
M. Deal, M. -J. Goupil, M. S. Cunha +7
The transition between convective and radiative stellar regions is still not fully understood. The sharp variations in sound speed located in these transition regions give rise to…
The pristine nature of SMSS 16051443 revealed by ESPRESSO
D. S. Aguado, E. Caffau, P. Molaro +20
SMSS J160540.18144323.1 is the carbon-enhanced metal-poor (CEMP) star with the lowest iron abundance ever measured, [Fe/H]=-6.2, which was first reported with the SkyMapper tele…