3 papers
astro-ph.SR2026
Alpha Cygni Variables as Seen from the Transiting Exoplanet Survey Satellite
Joyce A. Guzik, Claire Whitley, Nova Moore +2
The Alpha Cygni (ACYG) variables are blue-white supergiants which display low-amplitude brightness variations of around 0.1 magnitude. The prototype Deneb shows quasi-periodic vari…
astro-ph.SR2025
Convective shells in the interior of Cepheid variable stars: overshooting models based on hydrodynamic simulations
Maxime Stuck, Jane Pratt, Isabelle Baraffe +5
Because Cepheid variable stars have long been used as a cosmic benchmark, the accuracy of stellar evolution models for Cepheids have wide-reaching effects. Our goal is to provide a…
astro-ph.SR2025
Abrupt Pulsation Resumptions in Deneb: An Update
Joyce A. Guzik, Brian Kloppenborg, Noel Richardson +4
Deneb, the prototype Alpha Cygni variable, is a bright A2 Ia supergiant which shows irregular variability with a 12-day quasi-period, presumed to be caused by pulsations. At the 20…