Images from the Hubble Space Telescope show that there are previously unknown white dwarfs orbiting around pulsar companions.
On using photometric data from Kepler to study starspots, and to measure differential rotation rates.
This variable white dwarf pulsates as expected, but it also experiences very bright outbursts. Today’s paper takes us through the discovery and verification of the second pulsating white dwarf with outbursts, and speculates how the pulsations and outbursts may be linked.
In today’s paper, the authors use Cepheid distance moduli to study the structure of the SMC.
Stars form via gravitational collapse of molecular cloud cores. But observations reveal that far less gas is turned into stars than you would suspect by naively calculating the star formation rate. So what can we do about this mismatch?
Heavy stars live like rock stars: they live fast, become big, and die young. Low mass stars, on the other hand, are more persistent, and live longer. Fusing hydrogen slow and steady wins the stellar age-race.