A Space & astronomy forum. SpaceBanter.com

Go Back   Home » SpaceBanter.com forum » Others » Astro Pictures
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

NGC 2449 and IC 476



 
 
Thread Tools Display Modes
  #1  
Old April 22nd 17, 09:00 PM
WA0CKY WA0CKY is offline
Senior Member
 
First recorded activity by SpaceBanter: Feb 2008
Posts: 689
Default NGC 2449 and IC 476

NGC 2449 and IC 476 are a possibly interacting pair of galaxies in Gemini about 1.1 degrees southeast of Pollux. While at the same redshift there's no tidal plumes between the two. NGC 2779 looks pretty ordinary but smaller IC 476 is rather odd. The arm coming off the southwestern end of the bar is rather straight with only a slight curve and is rather red indicating little star formation for some time. The other arm comes off a short bar and is highly curved as well as blue. NGC 2449 appears to be a red and dead spiral with little star formation going on. Its spiral structure seems a bit odd with a somewhat blue segment splitting into two, both of which turn red. No arms seem to originate at the core but start well away as if from an invisible bar. It likely is my poor resolution giving this illusion still it may be an indication of interaction between these two.

ASK 248011.0, IC 2205 and NGC 2450 are also at about the same distance so likely part of the same group.

NGC 2449 was was discovered by Édouard Stephan on January 18, 1874. NGC 2450 was also discovered by Édouard Stephan but four years later on February 26, 1878. IC 476 was discovered by Stephane Javelle on January 30, 1892. IC 2205 was also discovered by Stephane Javelle but also four years later on January 16, 1896.

There are three asteroids in the frame, two of which are fainter than 20th magnitude though one has such a short trail it appears rather bright for its magnitude. The other is very bright at magnitude 16.6 per the minor planet center. It's naming citation reads:
(6618) Jimsimons = 1936 SO
Jim Simons (b. 1938) is an American mathematician and philanthropist. He
is the co-inventor of the Chern-Simons form, which has important applications
in physics. Along with his wife, Marilyn Simons, he co-founded the Simons
Foundation, a charity that supports math and science research.

If curious about the Chern-Simons form see: https://en.wikipedia.org/wiki/Chern%E2%80%93Simons_form

14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME

Rick
Attached Thumbnails
Click image for larger version

Name:	NGC2449L4X10RGB2X10.JPG
Views:	466
Size:	311.5 KB
ID:	6561  Click image for larger version

Name:	NGC2449L4X10RGB2X10ID.JPG
Views:	235
Size:	254.7 KB
ID:	6562  Click image for larger version

Name:	NGC2449L4X10RGB2X10CROP125.JPG
Views:	184
Size:	118.6 KB
ID:	6563  
  #2  
Old May 15th 17, 08:19 PM
slilge slilge is offline
Senior Member
 
First recorded activity by SpaceBanter: Aug 2008
Posts: 151
Default

Rick,

galaxies in the winter sky usually escape me, although there are some nice one like these and quite a lot in the southern parts of Orion near the witchhead nebula. You just have to find them like you did.

Stefan
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 08:02 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 SpaceBanter.com.
The comments are property of their posters.