Proxima Cen (GJ 551; dM5.5e) is one of only about a dozen fully convective stars known to have a stellar cycle, and the only one to have long-term X-ray monitoring.
Proxima Cen
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy
The Solar Neighborhood LI: A Variability Survey of Nearby M Dwarfs with Planets from Months to Decades with TESS and the CTIO/SMARTS 0.9 m
We present the optical photometric variability of 32 planet-hosting M dwarfs within 25 parsecs over timescales of months to decades. The primary goal of this project, ATLAS — A Trail […]
Posted inExoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release, Proxima Centauri
AlH Lines In The Blue Spectrum Of Proxima Centauri
The recently-computed ExoMol line lists for isotopologues of AlH are used to analyse the blue spectrum (4000-4500 Å) of Proxima Cen (M5.5 V). Comparison of the observed and computed spectra […]
Posted inProxima Centauri
Temporal Changes Of The Flare Activity Of Proxima Cen
We study temporal variations of the emission lines of Halpha, Hepsilon, H and K Ca II, D1 and D2 Na I, 4026 and 5876 A He I in the HARPS […]