Energy transport in white dwarfs: what about magnetic fields?
Magnetic fields always make things more compiclated. In today’s paper, the authors studied their effect on the atmosphere of white dwarf stars.
Image credits: ESO/L. Calçada
The stellar evolution conspiracy, part I
Have you checked the assumptions and approximations of your favorite stellar evolution code? In today’s paper we confront these uncertainties and face the fact that, well, stellar evolution is extremely complicated and we need to keep tabs of the limitations of our models.
Zooming in on Betelgeuse
Today’s paper uses adaptive optics and polarized visible light to probe Betelgeuse’s secrets. These observations have lots to tell us about interactions among the star’s surface, the closest and most-recently-ejected clumps of gas, and brand new polarized dust.
Convection in the Sun is Slower than We Thought
In the sun, subsurface flows are 20-100 times slower than what is predicted in widely used theoretical models.
Buoyancy in Action
Ever wonder how sunspots are formed? This paper takes a close look at how the magnetic structures that give rise to sunspots make it all the way from the deep solar interior to its surface.