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REPOST SpaceBanter lost of NGC 7567 and the WBL Galaxy Group



 
 
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  #1  
Old February 5th 17, 02:07 AM
WA0CKY WA0CKY is offline
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Default REPOST SpaceBanter lost of NGC 7567 and the WBL 702 Galaxy Group

UNRELIABLE SpaceBanter LOST THIS POST SO AM REPOSTING IT SO THEY CAN LOSE IT AGAIN.

NGC 7567 is a strange, somewhat wedge shaped galaxy in the southwest corner of the Great Square of Pegasus about 180 million light-years distant. It is classified by NED as an Irregular but the NGC Project and Seligman says it is Scd?. That would indicate we are seeing it edge on and it has no dust lane. Not impossible but I prefer NED's Irregular classification due to the shape and lack of a dust lane. I measure it as being about 50,000 light-years in size. Large for an irregular which argues for it being an edge on spiral. The galaxy was discovered by Albert Marth on November 3, 1864.

The other NGC galaxy in the image is NGC 7551 on the western edge of the image. NED has no redshift information or other distance estimates for it. In fact there's little on it at all. Many sources consider it a duplicate entry for NGC 7540 (not in this image). However the NGC Project says this can't be correct as both were discovered by Albert Marth on November 3, 1864 and his position for this galaxy is correct. While it is an obvious near edge on spiral galaxy NED doesn't classify it at all. The NGC Project says S while Seligman says S??.

NGC 7567 and the three PGC galaxies in the cropped image comprise the four galaxy group WBL 702. See the annotated image for what little I found on the three PGC galaxies. Note that PGC 70902 is not a true group member being twice as distant as the other three. Still visually it does seem to belong. PGC 70890 has a small edge on disk galaxy visible either through it or seen in front of it. I vote for it being seen right through the fainter outer portions of the PGC galaxy. It's deeper red color could be due to seeing it through the dust of PGC 70890. I found no designation or anything else on this edge on "companion".

14" LX200R @ f/10, L=4x10' RGB=2x10", STL-11000XM, Paramount ME
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Last edited by WA0CKY : February 5th 17 at 02:16 AM.
  #2  
Old February 7th 17, 11:11 PM
slilge slilge is offline
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NGC 7567 looks has an unusual shape indeed, still Guide 9 also says it is Scd.

Stefan
 




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