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

ASTRO: NGC 3486 A neat fragmented arm galaxy



 
 
Thread Tools Display Modes
  #1  
Old February 15th 13, 08:24 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
external usenet poster
 
Posts: 3,085
Default ASTRO: NGC 3486 A neat fragmented arm galaxy

NGC 3486 is a multi-fragmented arm spiral in western Leo Minor about 45
million light-years distant. It has a very bright core but faint arms.
NED classes it as SAB(r)c and a Seyfert 2 galaxy with HII emission.
The NGC Project says simply Sc. Assuming the 45 million light-year
distance I measure it at about 93,000 light-years in diameter. The HII
regions came through surprisingly well for that distance even though I
used no Hydrogen Alpha data to help bring them out (the pink spots). At
first glance it appears to be a grand design spiral but then you realize
the arms are just fragments taking it out of that classification which
needs complete, well defined arms.

To the upper left of NGC 3486 is the rather odd looking galaxy VV 515.
The VV catalog only lists multiple galaxies. In this case three of
them. Unfortunately, NED doesn't give the position of the three, just
of the group so I can't tell you which parts are considered separate
galaxies.

I listed the catalog name of all galaxies with redshift data that had a
name other than one that was just its coordinates. The two with
question marks beside them weren't in NED even though this field is well
covered by the Sloan Survey data. Again, I just happened across them so
it is likely others were missed as well. There are several galaxy
clusters around bright cluster galaxies. Most used the same
photographic data (p) for the distance to both the galaxy and the
cluster. When this happened I listed only one distance. In the case
where there were two determinations, one of which was spectroscopic and
different both are listed with the first being the cluster distance and
the second the distance to the anchoring galaxy. Likely the
spectroscopically determined redshift is most accurate for both the
galaxy and cluster.

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

Rick
--
Prefix is correct. Domain is arvig dot net

Attached Thumbnails
Click image for larger version

Name:	NGC3486L4X10RGB2X10R.JPG
Views:	385
Size:	295.3 KB
ID:	4484  Click image for larger version

Name:	NGC3486L4X10RGB2X10-ID.JPG
Views:	206
Size:	162.0 KB
ID:	4485  Click image for larger version

Name:	NGC3486L4X10RGB2X10CROP150.JPG
Views:	152
Size:	131.3 KB
ID:	4486  
 




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: FGC 965 a neat flat galaxy Rick Johnson[_2_] Astro Pictures 0 February 1st 13 06:49 AM
ASTRO: KTG 67 Neat galaxy group you never heard of Rick Johnson[_2_] Astro Pictures 1 August 11th 11 08:47 PM
KUG 2348+270A a neat ring galaxy you've never heard of Rick Johnson[_2_] Astro Pictures 0 July 31st 11 08:59 PM
ASTRO: NGC 3486, Barred Spiral Galaxy in Leo Minor George Normandin[_1_] Astro Pictures 6 May 6th 08 10:12 PM
ASTRO: NGC 3486 Rick Johnson[_2_] Astro Pictures 3 April 17th 07 10:47 PM


All times are GMT +1. The time now is 11:27 AM.


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.