Daily Archives: September 2, 2013

PGC 10922

Hubble's view of PGC 10922.  Click for larger.  ESA/Hubble & NASA, Acknowledgement: Judy Schmidt
Hubble’s view of PGC 10922. Click for larger. ESA/Hubble & NASA, Acknowledgement: Judy Schmidt

Here is an image of PGC 10922. The ESA caption is below but for some other particulars that makes this Hubble view even more outstanding:

The galaxy is located at RA 02h 53m 35.9s and DEC -83d 08m 32s and it’s about 67.92 Mpc away (about 221 million light-years).  It shines  at a magnitude 13.7 and is small at around one (1) arc minute +/-.

Want a comparison between Hubble and a ground based image?  Have a look at this image from the 2MASS 1.3m telescope at the ESO.

One other interesting thing about the image is it is has a redshift velocity (moving away from us) of 4,830 km/second (z = 0.016111), that’s nearly 11 million mph for the metrically challenged.

Here’s the ESA caption (via NASA and you can get different sizes of the image at this link):

The NASA/ESA Hubble Space Telescope has captured this image of PGC 10922, an example of a lenticular galaxy — a galaxy type that lies on the border between ellipticals and spirals.
Seen face-on, the image shows the disk and tightly-wound spiral structures of dark dust encircling the bright center of the galaxy. There is also a remarkable outer halo of faint wide arcs or shells extending outwards, covering much of the picture. These are likely to have been formed by a gravitational encounter or even a merger with another galaxy. Some dust also appears to have escaped from the central structure and has spread out across the inner shells. An extraordinarily rich background of more remote galaxies can also be seen in the image.

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