Galactic cousins in Corvus (Now with 150% crops)

[richardo]

Hi all,
after quite a while with cloud have had a few clearish nights. Although the wind has been pretty strong (yep, clear skies and the wind comes:mad2:)
So no imaging towards the sth, sth east.

A hard decision, image one object to the centre or squeeze in both. Yes a tight fit and non too aesthetic imo, but what do you do:shrug:

For a direct link.
http://www.baytop-observatory.com/ccdimages/galaxies/ngc4038_4027.htm (http://www.baytop-observatory.com/)

Cheers all, hope you've been able to get out.
Rich

[gregbradley]

Very nicely done Rich. A pleasing image and tastefully processed.

Greg.

[Stevec35]

Nicely done Rich. Introducing some Ha might be interesting.

Cheers

Steve

[madbadgalaxyman]

Nice work!
My initial impression is that your image of the tidal tails is deeper than I usually see. Can you stretch it even further??

Note the knots at the end of one of the tidal tails of
NGC 4038/9. There is abundant formation of very luminous and massive stars going on here, well outside the main bodies of the galaxies.

Some professional astronomers believe that dwarf galaxies can form in tidal tails. These galaxies, as you would expect, are called Tidal Dwarfs.

Way back in the 1970s, Ken Freeman and
Gerard de Vaucouleurs wrote a paper about NGC 4027 showing that one-armed features can form due to interactions of a spiral or irregular galaxy with a lower mass companion.

cheers, madbadgalaxyman

[richardo]

Thanks Greg.....
Have done the Antennae a few times before, but was happy to see a bit more detail coming through.



Thanks Steve and a good idea with the Ha... there are some tight knots exhibited in other images of this/ these two interacting galaxies that have Ha data added.... makes sense since these guys are cranking up the volume with reformation and star birthing.



Thanks very much Robert for the comments.
Yes these two interacting galaxies are pretty intriguing. As we image as by-standers observing and discerning the formation of new bodies within.
Interesting about the 'Dwarf' galaxy theory. I can only guess this would occur when the matter in the tidal tail would disperse further from the influence of its origins gravitational field. Then coalesces under its own new found gravity that being with enough HII ; HI, dust particles/ star matter creating cold dark clouds of molecular hydrogen and atomic hydrogen to begin star birthing... once again only guessing but these dwarfs would be more likely to be elliptical type galaxies.... a bit like the LMC & SMC are to our own galaxy...

As for my image, I've pretty much stretched the image without looking too false aesthetic with the 'tails', as usual more data would help to be able to stretch even further.


Thanks all for your replies and nice comments.
All the best:thumbsup:
Rich

[multiweb]

Great field. Nicely processed. :thumbsup:

[richardo]

Hi Marc and thanks for commenting!
Pretty close to the edge of the field so it looks a little odd with such a large area with little to show in between.
I guess I could have done a mosaic, so thought I would add the the two galaxies in a 150% cropped version to better show things.

all the best:thumbsup:
Rich

[atalas]

Looks great Rich!

[richardo]

Thanks Louie, nice to hear from you!!

All the best
Rich