Some globular star cluster consists of a million stars with an apparent magnitude of 21m and occupies an area of 1 square minute in the sky
September 15, 2020 | Education
| Some globular star cluster consists of a million stars with an apparent magnitude of 21m and occupies an area of 1 square minute in the sky. Determine the integral stellar magnitude of the cluster and the surface brightness in magnitudes per square second.
Integral gloss 6 ^ m; surface brightness ~ 15 ^ m per square second.
