3 papers
astro-ph.EP2025
True spin-orbit obliquities distribution: data-driven confirmation of no clustering of misaligned planets
Alessandro Matteo Rossi, Monica Rainer, Francesco Borsa +1
Context. True spin-orbit obliquities Ψ offer valuable insights into the evolutionary history of exoplanetary systems. Previous studies have suggested that exoplanets tend to occup…
astro-ph.SR2025
The elusive chase for the first RR Lyr star in a binary system: the case of KIC 2831097
Ennio Poretti, Jean-Francois Le Borgne, Mercedes Correa +9
The lack of RR Lyr stars in binary systems is an atypical fact when we compared it to other classes of variables. Therefore, it has become a challenge for observers to detect an RR…
astro-ph.SR2025
Stable magnetic fields and changing starspots on Vega -- An ultra-deep decadal survey at Pic du Midi and OHP
T. Böhm, M. Holschneider, P. Petit +4
Monitoring magnetic and activity variations in A- and B-type stars with ultra-weak magnetic fields is essential to understand the origin and evolution of these fields in this regio…