Chandra X-ray Image of UGC 6697 in Abell 1367, Labeled
The Chandra X-ray image shows a part of the northwest region - about 0.56 million light years across - of the galaxy cluster Abell 1367. Diffuse X-ray emitting clouds from five galaxies (labeled) can be seen. These clouds are cool (5 - 10-million-degrees Celsius), embedded in 60 - 70-million-degrees Celsius intracluster medium (ICM) of Abell 1367.
Scale: Image is 6.4 x 7 arcmin.
(Credit: NASA/SAO/CXC/M.Sun et al.)

Composite Image of UGC 6697 in Abell 1367
The galaxy UGC 6697, located about 1.5 million light years from the core of the galaxy cluster Abell 1367, is shown here in a composite X-ray (blue)- optical (red & green) image. The Chandra image reveals a sharp edge on the lower left that is inside the optical edge of the galaxy, and a long tail of X-radiation extending to the upper right beyond the optical galaxy. These features suggest that the density of the hot gas that pervades the cluster is just right - not too high or not too low - to trigger a burst of star formation by compressing clouds of cool gas in the galaxy.
Scale: Image is 3 x 2.8 arcmin.
(Credit: X-ray: NASA/SAO/CXC/M.Sun et al.; Optical: GOLDMine/G. Gavazzi et al.)

Chandra X-ray/Optical Composite with Scale Bar
Scalebar = .75 arcmin
(Credit: X-ray: NASA/SAO/CXC/M.Sun et al.; Optical: GOLDMine/G. Gavazzi et al.)