4 papers
Dust cloud lifetimes of Scallop-shell stars
Simon Daley-Yates, Moira M. Jardine, Luke Bouma
We investigate the survival of dust trapped in magnetically confined cool gas clouds (or {\it prominences}) around rapidly rotating M-dwarfs exhibiting the ``scallop-shell'' light-…
WASP-12, shrouded in mystery or just cold gas?
Simon Daley-Yates, Ricarda Beckmann, Lewis McCallum +2
Observations of the planet-hosting star WASP-12 show a distinctive depression in the \ion{Mg}{ii} and \ion{Ca}{ii} resonance lines. This has been interpreted as a marker of atmosph…
A Plasma Torus Around a Young Low-Mass Star
Luke G. Bouma, Moira M. Jardine
A small fraction of red dwarfs younger than 100 million years show structured, periodic optical light curves suggestive of transiting opaque material that corotates with the star.…
Simulating stellar coronal rain and slingshot prominences
Simon Daley-Yates, Moira Jardine
We have numerically demonstrated that simulated cool star coronae naturally form condensations. If the star rotates slowly, with a co-rotation radius greater than the Alfvén radiu…