Intermediate-mass stars become carbon-rich in the final phases of their lives as stars.  As they

Around the turn of the last century, star clusters of all kinds were considered ‘simple’

The combination of stellar proper motions measured by the Gaia mission with spectroscopic radial velocities

Over the past decades, several studies have discovered a population of galaxies that undergo very

I will review what we know about the emission from the accretion flow, starting with the

X-ray binary systems are among the best astrophysical sources to study the processes of accretion