Image AGZ0002au5
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by liometopum
what is this?
Posted
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by Budgieye moderator
It is an irregular galaxy, I can see some hints of structure. The blueness indicates that it is star forming, so the galaxy probably had a merger in the past. It is KUG 0958+373 #KUG KUG0958+373
The rise at 4000 shows blue star formation. The peaks of O indicate star supernova and subsequent nebula formation. The H peak indicates that there is a slightly active black hole in there somewhere.
http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237661383311097889
The bright blue object is probably a star in our galaxy. It has the overexposed bit in the middle. If it were an area hit by a jet from the black hole, I think it would look more irregular. see 3.6 Relativistic jets http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=3&comment_id=53d8b92adb90c76710000f93 and 3.3 AGN-illuminated clouds, Voorwerpje http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=3&comment_id=53d8b8f5db90c76710000f90
http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237661383311097916
Posted
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by liometopum
This is a wonderfully helpful reply!
FIRST: I would not have thought that was stat, as in the SS image, no other stars are blue. But I have seen an image where a pixel got 'distorted' and over-emphasized by the software. I do not know how to access my own collections. I think I saved the example. I can try to find it for you.HOW DID YOU GET the KUG number? Sometimes a galaxy number is on the SS discription, but not in this case, nor in others where I see people list a number. How they get a galaxy number when it is not on SS has puzzled me for a long time.
I like your explanation of the spectral lines. That is the first I have seen about this. Thanks!!
As an aside, the link you give to the skyserver data is not the same as the link I get when I click on the link to view SkyServer information. And the reason is the target, it appears.
This link targets the galaxy:
http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237661383311097889This link targets the blue spot:
http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237661383311097916How do you find the link to the blue spot, for example??
You mention "see 3.6 Relativistic jets." HOW? I have classified nearly 2000 images, and I still don't know some of these basics. Thanks again.
Posted
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by mlpeck in response to liometopum's comment.
HOW DID YOU GET the KUG number? Sometimes a galaxy number is on the SS
discription, but not in this case, nor in others where I see people
list a number. How they get a galaxy number when it is not on SS has
puzzled me for a long time.Just keep clicking, basically. From the Galaxy Zoo examine page you can click on "Search NED" . Or if you are in Skyserver Navigate click on "Explore" and then "Search NED". Either way you will jump to the NASA Extragalactic Database and a list of nearby objects will be displayed. In this case the KUG catalog number is on line 3 just because the spectrum was recorded for an area slightly displaced from the center of the galaxy.
Budgieye has been here a lot longer than I have, but I think the blue point-like source is probably just a star forming region in the galaxy rather than a foreground star. It's hard to tell since the fiber was centered some distance away, but irregular galaxies generally have clumpy star formation with sometimes very intense localized star formation.
I hope my US English spelling isn't too confusing.
Posted
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by liometopum
Thanks! Your spelling is better than mine. I see I misspelt 'description'.
Posted