Starry Bulges Yield Secrets to Galaxy Growth (Hubble and Ground-Based View)
Depicts: NGC 1365, IRAS 03317-3618
Copyright: Allan Sandage (The Observatories of the Carnegie Institution of Washington) and John Bedke (Computer Sciences Corporation and the Space Telescope Science Institute), NASAand John Trauger (Jet Propulsion Laboratory), NASA, ESA, and C. Marcella Carollo (Columbia University)
This collage of images in visible and infrared light reveals how the barred spiral galaxy NGC 1365 is feeding material into its central region, igniting massive star birth and probably causing its bulge of stars to grow. The material also is fueling a black hole in the galaxy's core. A galaxy's bulge is a central, football-shaped structure composed of stars, gas, and dust.
Last Update: 1 September 2019