Some stars near the galactic center and in the plane of the Milky Way show perplexing trends in fluorine abundance that are not predicted by any stellar chemical evolution models.
The discovery of a subdwarf B star classified as a tidally tilted pulsator — a star with its pulsation axis aligned with the tidal axis of its binary system — greatly broadens our understanding of these objects.
Light bridges — bright, elongated features that sometimes appear in the darkest region of a sunspot — showcase a variety of behaviors such as transient brightening, intermittent jets, and light walls.
Researchers have zeroed in on 29 solar-type stars with periodic activity cycles, finding one star that shows evidence for a lessening of stellar activity akin to the deep, prolonged solar minimum from 1645 to 1715.
A team has created a new, independent vetting pipeline to discover planets in Transiting Exoplanet Survey Satellite data that might otherwise be missed, bolstering the numbers of known close-in giant exoplanets.
Though simulations of the convective–radiative boundary within a star have different outcomes on brief timescales when different criteria are implemented, they reach the same state over long timescales.