PKS 1127-145 Absorber Illustration
On their way to Earth, the X-rays from PKS 1127-145 pass through a galaxy located about 4 billion light years from Earth. Atoms of various elements in this galaxy absorb some of the X-rays. By measuring the amount of absorption, astronomers were able to estimate that the intervening galaxy contained only about 20 percent as much oxygen as our Milky Way Galaxy has now.
(Credit: NASA/CXC/M.Weiss)

Optical View of PKS 1127-145
This image of the region surrounding quasar PKS 1127-145 and its jet was obtained by the Hubble Space Telescope.
(Credit: NASA/HST/CfA/A.Siemiginowska et al.)

Scale: Image is 40 x 32 arcsec.

X-ray and Optical, Overlay
This composite overlays the Chandra and the Hubble images on top of one another.
(Credit: X-ray: NASA/CXC/A.Siemiginowska (CfA) & J.Bechtold (U. Arizona) Optical: NASA/HST/CfA/A.Siemiginowska et al.)

Scale: Image is 40 x 32 arcsec.

X-ray and Optical, Side by Side
This composite shows the same field of view in the optical (left) and the X-ray (right) observed with Hubble and Chandra respectively.
(Credit: X-ray: NASA/CXC/A.Siemiginowska (CfA) & J.Bechtold (U. Arizona) Optical: NASA/HST/CfA/A.Siemiginowska et al.)

Scale: Images are 40 x 32 arcsec.

X-ray Image of PKS 1127-145 with Radio Contours
Overlay of Chandra image (in color, smoothed to the same resolution as the radio data) with radio contours (VLA 1.4G~Hz).
(Credit: X-ray: NASA/CXC/A.Siemiginowska (CfA) & J.Bechtold (U. Arizona); Radio: Siemiginowska et al.(VLA))

Radio Image of PKS 1127-145
Radio image in two frequencies: contours (1.4 GHz) and a grey scale (8.4 GHz)
(Credit: Siemiginowska et al.(VLA))

Chandra X-ray Image with Scale Bar
Scale bar = 10 arcsec
Credit: NASA/CXC/A.Siemiginowska(CfA)/J.Bechtold(U.Arizona)