chandra_528 December 6th, 2012
Credit: X-ray (NASA/CXC/SAO/A.Prestwich et al); Optical (NASA/STScI)
NGC 922 was formed by the collision between two galaxies one seen in this composite image (where X-rays from Chandra are red and optical data from Hubble appear as pink, blue, and yellow) and another located outside the field of view. This collision triggered the formation of new stars in the shape of a ring. Some of these were massive stars that evolved and collapsed to form black holes. Astronomers are studying NGC 922 and other galaxies to determine the galactic composition that produces the biggest stellar-mass black holes.
Provider: Chandra X-ray Observatory
Image Source: http://chandra.harvard.edu/photo/2012/ngc922/
Curator: Chandra X-ray Observatory, Cambridge, MA, USA
Image Use Policy: http://chandra.harvard.edu/photo/image_use.html
Telescope | Spectral Band | Wavelength | |
---|---|---|---|
Hubble (WFC3) | Optical (I-band) | 814.0 nm | |
Hubble (WFPC2) | Optical (R-band) | 665.0 nm | |
Hubble (WFC3) | Optical (R-band) | 621.0 nm | |
Hubble (WFC3) | Optical (Y-band) | 547.0 nm | |
Hubble (WFPC2) | Optical (B-band) | 439.0 nm | |
Hubble (WFPC2) | Optical (U-band) | 300.0 nm | |
Chandra (ACIS) | X-ray (X-ray) | 826.7 pm | |
Detailed color mapping information coming soon...
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