WBL NEARBY POOR GALAXY CLUSTERS

[Mike JW]

Totally agree - this was a lovely surprise for me.

Mike

[Mike JW]

WBL 674 can be found in Pegasus. I enjoy these groups because there is often a variety of galaxies in the group, they have bright (ish) members and frequently other objects of interest lurk in the view. For you guys with a wider fov, these are well worth tracking down.

There is much to enjoy in the view below. Three galaxies make up WBL 674 but which three?

 

WBL 674 = IC 5145, IC 5144 and ? (probably CGCG 427-039). Looking at the redshift data IC 5145 lies about 332 million lyrs away but the rest of the galaxies in view are around the 400 million lyr distance. IC 5144 is at 411 million lyrs and is a barred spiral. Just to the right of CGCG 427-039 is a piece of galactic fuzz - no ID given by NED. The quasar - top right, mag 20 (don't believe it - my set up can go that deep but it is way too bright for that faint magnitude) and its redshift value puts it way out at approx 11 billion lyrs!!

 

Close up of IC 5145 showing its spiral nature.

Mike

[Davesellars]

Fascinating group of galaxies!  Indeed, there's a great variety of type there in the view.

 

According to SkySafari...

IC 5145 is 383 Mly distance receeding at 7363 km/s

UGC 11845 is 348 MIy distance receeding at 7234 km/s

IC 5144 is 418 Mly distance receeding at 8686 km/s

PGC 1473533 (CGCG 427-39) is 440 Mly distance receeding at 9063 km/s

PGC 1474263 is 430 Mly distance receeding at 8939 km/s

So...  my guess is that the group would be made up of IC5144,  PGC 1473533 and PGC 1474263 as these have very similar distance and receeding velocity?

 

 

Edited November 1, 2022 by Davesellars

[Martin Meredith]

Mike, if you reload, platesolve, and turn up the annotation slider to max, it ought to show the group members (as red squares). The squares might be hidden beneath the galaxy annotation markers so you'd need to click on those first to see the red squares...

Martin

[Mike JW]

Thanks Martin, I have tried what you suggest but no red squares!

Dave thanks for adding in the extra info. I have just made the effort to look at VizieR data - https://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/AJ/118/2014

These tables would suggest the three galaxies I listed?

All good fun

Mike