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 7102 with images this time



 
 
Thread Tools Display Modes
  #1  
Old March 4th 15, 08:34 AM
WA0CKY WA0CKY is offline
Senior Member
 
First recorded activity by SpaceBanter: Feb 2008
Posts: 689
Default Ngc 7102 with images this time

NGC 7102 is a galaxy that seems to fit Arp's catagory for spirals with small, high surface brightness galaxy on an arm. The companion is LEDA 214783. The pair are about two hundred million miles distant under the nose of Pegasus. While the redshifts are slightly different it appears they are interacting. The spiral arm leading to the companion has been highly distorted compared to it counterpart on the northern side of the galaxy. NED classifies NGC 7102 as SB(rs)b? while the NGC project says simply SBb. I find no classification for the companion. These are the only two galaxies in the image with redshift data so no annotated image was prepared.

NGC 7102 may also be IC 5127. There's nothing at the position given for IC 5127. According to the NGC Project NED returns "There is no object with this name in NED". This is no longer correct as NED now condsideres it as the same as NGC 7102. However as the NGC project says SIMBAD still does return "Not present in the database."

NGC 7102 was discovered by Albert Marth on October 16, 1863 while Guillaume Bigourdan found IC 5127 on October 27, 1894. Though there's nothing at that position. It appears he used a reference star whose position was off by 4 minutes of arc. While this doesn't fully explain the error it does explain much of it. Still it gets within a minute of arc of NGC 7102 which has convinced many, including NED, they are equivalent and Bigourdan wasn't seeing a comet or other transient object. The confounding factor here is that Gigoudan also recorded NGC 7102 and did so at its correct position the same night. If not for this there'd be no question they are the same object. You can read more on this at the NGC Project under NGC 7102.

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

Rick
Attached Thumbnails
Click image for larger version

Name:	NGC7102L4X10RGB2X10.JPG
Views:	267
Size:	267.2 KB
ID:	5557  Click image for larger version

Name:	NGC7102L4X10RGB2X10CROP125.JPG
Views:	129
Size:	112.7 KB
ID:	5558  
 




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

Similar Threads
Thread Thread Starter Forum Replies Last Post
ASTRO: Sh2-82 Right images this time Rick Johnson[_2_] Astro Pictures 3 July 8th 11 08:06 PM
ASTRO: M110 Right images this time Rick Johnson[_3_] Astro Pictures 2 February 11th 08 06:07 PM
Real time solar images -JATO Amateur Astronomy 2 July 6th 05 01:18 AM
Real time solar images -JATO Misc 0 July 4th 05 06:20 PM


All times are GMT +1. The time now is 07:17 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.