Studies on the populations of luminous stars in nearby resolved galaxies have revealed a complex distribution in the luminosity–temperature plane (the HR diag

Before exploding as supernovae, luminous hot stars live out their lives of a few million years with prodigious outputs of radiation and stellar winds, dramatica

The Sun is merely one of some 200 billion stars that make up the Milky Way--and the Milky Way is only one of a billion galaxies in the known universe. Packed wi

This textbook provides a comprehensive and lucid modern introduction to galaxies for advanced undergraduate students in astronomy and physics. Basic astrophysic