28 citations · 70 across the 12 of their papers we have counts for
10 papers · 1 filter
Chemical paradox in a binary system: Exploring metal enrichment in HD 81809B
Nuno Moedas, Maria Pia Di Mauro
The HD 81809 system presents peculiar chemical composition with a large metallicity difference between its two components: the primary has low metallicity ([Fe/H]=-0.57 dex), while…
Ariel stellar characterisation IV. Fundamental parameters of 18 hot stars in the Ariel mission candidate sample
H. Ramler, S. P. D. Borthakur, C. P. Folsom +16
The characterisation of exoplanetary systems depends on the accurate determination of host star parameters. The Ariel mission will probe the atmospheres of a statistically signific…
On the contradictory case of the binary system HD 81809 hosting two pulsating solar-like stars observed by TESS
Maria Pia Di Mauro, Camilla Pezzotti, Nuno Moedas +8
We present a new comprehensive study of HD81809, a nearby binary system of two solar-like stars showing high-amplitude X-ray emission and a well-defined 8-year solar-like magnetic…
Studying the surface effect in Procyon A as an F-type star
Nuno Moedas, Maria Pia Di Mauro
Procyon A is an F-type main-sequence star in a binary system. It has been the subject of numerous ground-based and space-based observing campaigns, providing precise classical cons…
Impact of radiative accelerations on the stellar characterization of FGK-type stars using spectroscopic and seismic constraints
Nuno Moedas, Morgan Deal, Diego Bossini
Chemical transport mechanisms are fundamental processes in stellar evolution models. They are responsible for the chemical distribution, and their impact determines how accurately…
Characterisation of FG-type stars with an improved transport of chemical elements
Nuno Moedas, Diego Bossini, Morgan Deal +1
Context. The modelling of chemical transport mechanisms is crucial for accurate stellar characterizations. Atomic diffusion is one of these processes and it is commonly included in…
Predicted asteroseismic detection yield for solar-like oscillating stars with PLATO
M. J. Goupil, C. Catala, R. Samadi +26
We determine the expected yield of detections of solar-like oscillations for the PLATO ESA mission. We used a formulation from the literature to calculate the probability of detect…
Atomic diffusion and turbulent mixing in solar-like stars: Impact on the fundamental properties of FG-type stars
Nuno Moedas, Morgan Deal, Diego Bossini +1
Chemical composition is an important factor that affects stellar evolution. The element abundance on the stellar surface evolves along the lifetime of the star because of transport…
Asteroseismic modelling of solar-type stars: A deeper look at the treatment of initial helium abundance
Benard Nsamba, Nuno Moedas, Tiago L. Campante +7
Detailed understanding of stellar physics is essential towards a robust determination of stellar properties (e.g. radius, mass, and age). Among the vital input physics used in the…
Asteroseismic stellar modelling: systematics from the treatment of the initial helium abundance
Nuno Moedas, Benard Nsamba, Miguel T. Clara
Despite the fact that the initial helium abundance is an essential ingredient in modelling solar-type stars, its abundance in these stars remains a poorly constrained observational…