3 papers
astro-ph.SR2025
Convective Heat Transport Asymptotic Law in an dynamo model
Giuseppina Nigro
Stellar activity and planetary magnetospheres are powered by an underlying dynamo mechanism generated by magnetoconvection coupled with rotation. In astrophysical contexts, magneto…
astro-ph.SR2025
On the Temporal Variability in the Magnetic Dichotomy of Late M Dwarf Stars
Giuseppina Nigro, Francesco Berrilli, Giuseppe Bono +4
Rapidly rotating late M dwarfs are observed in two different branches of magnetic activity, although they operate in the same stellar parameter range. Current empirical evidence in…
astro-ph.SR2025
Investigating the Temperature Sensitivity of UV Line Ratios in the 280 nm Region of Solar-like Stars
Valentina Penza, Serena Criscuoli, Raffaele Reda +7
Stellar UV spectra are fundamental diagnostics of physical and magnetic properties of stars. For instance, lines like Mg II at 280 nm serve as valuable indicators of stellar activi…