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Abell galaxy clusters


Martin Meredith

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We haven't had a post for a while so here's the last object I observed -- way back in October (sigh).

Abell 2319 is the only Abell galaxy cluster in Cygnus. It sits near the border with Lyra. There are no NGC nor IC galaxies here. The 3 brightest galaxies have CGCG designations from Zwicky's Catalogue of Galaxies and Clusters of Galaxies. It is quite fun spotting the bits of fuzz amongst the stars -- there are quite a few more than a quick glance would suggest.

I imagine there are no more Abell clusters in Cygnus due to the difficulty of spotting clusters in the rich starfields of the plane of the galaxy. It was the prospect of finding such a cluster in such a starry location that drew me to observe this field and then to add a touch of colour to the observation. There are quite a range of temperatures on view, ranging from blue to deep red. I particularly like the different shades of orange in the triplet at around 2 oclock.

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cheers

Martin

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  • 2 months later...

Abell 615 lies in Gemini and is small enough for my set up to get it all in view. It lacks any obvious bright galaxies but its compact nature makes for a pleasing result. I have captured about 20 galaxies in my shot - at first I thought I had got more but cross referring to Aladin/NED  they are stars. Two quasars also marked.

1814208885_Abell61523Feb22_05_30_57.png.6412e292b9a98e10c007273a2ab6ca20.png

Mike

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24 hrs later and I manged to grab another short session in unsteady conditions (yet again).

This time Abell 610. The obvious brighter galaxies in the centre are still only mag 17/18. I checked several of them for distance and apart from one they probably are a group lying at about the 1.2Gyr distance. One of them lies further out at 1.3Gyr. Abell 610 is poor in X-ray luminous galaxies, is a low mass cluster and appears to have two main clusters within the overall cluster.

265898090_Abell61025Feb22_06_18_21.png.e0f04936e7ba012cfe926ead9f6feb3f.png

Mike

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Nice shot of Abell 610. I particularly like the echelon opf 3 (or 4) edge-ons just N of centre. I also looked at this a couple of years back and for some reason left it stacking for quite a while. I'm not sure I got any deeper as a result but here's the shot. The clusters extend out still further and the area is replete with tiny galaxies.

629356595_Abell61027Feb22_15_58_22.png.f1a639a9a2f74f8073c0172597672633.png

 

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Hi Martin, 610 is well worth a second visit to tease out more galaxies.

Below is a shot of my recent visit to Abell 1185 (UMA/Leo border).

This view is of the main collection of brighter galaxies.  Abell 1185 is around the 400 million light year distance and is part of the Leo supercluster. It has 82+ galaxies in it and has been described as being lumpy, which I take to mean there galaxy groupings within this cluster. It has many bright elliptical galaxies.

The interesting galaxy pair on the left of shot is Arp 105 - I shall post a zoomed in version in the Arp thread.

1813933119_Abell118526Feb22_15_59_56.png.5a5cb1e4922446ea667626be2b6d1323.png

Mike

 

Edited by Mike JW
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  • 4 weeks later...

Here's my Abell 610 effort from this evening.  Transparency didn't seem to be very good, though.

Various states of zoom, from wide to narrow.

Busy with other task this evening, so not much more to say about this one (yet.)

 

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1105618203_Abell61024Mar22_20_24_34.jpg.2a2502464b6c0e28a0a157c54d7ee1c7.jpg  229178656_Abell61024Mar22_20_26_06.jpg.2394582bfbc8f75ac5378ba402f5a398.jpg

 

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