Author Topic: Possible strong gravitational lenses  (Read 569509 times)

zookeeperKevin

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Possible strong gravitational lenses
« on: September 14, 2007, 07:55:21 am »
Post them here.  :)

pluk

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Re: Possible strong gravitational lenses
« Reply #1 on: September 14, 2007, 08:39:13 am »
Okay :) I'll start: (posted it on the Oddballs thread earlier, but I shall remove it there then)

Ref: 587732589572325457


Note the faint ring of blue beads along the bottom-right edge of the elliptical in the center.

Spotted it in the Clusters of Galaxies thread:

http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587732589572325457

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Alice

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Re: Possible strong gravitational lenses
« Reply #3 on: September 14, 2007, 06:15:53 pm »
I see that being part of a fabulous project like Galaxy Zoo is not enough for ambitious scientists like you, Kevin - you need some Einstein-worthy discoveries too!  ;D :D ;) I hope you get them!

katherine

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Re: Possible strong gravitational lenses
« Reply #4 on: September 14, 2007, 07:32:00 pm »
I don't know if this is one or not - I'll delete the post if it isn't!



587739844319576343

Tony F

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Re: Possible strong gravitational lenses
« Reply #5 on: September 14, 2007, 09:06:27 pm »
Now that is odd. If the blue area is star forming, or very young. well, I haven't a clue.

EricFDiaz

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Re: Possible strong gravitational lenses
« Reply #6 on: September 15, 2007, 01:59:38 am »
Neither of these are instantiations of gravitational lensing.

mitch.wheat.

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Re: Possible strong gravitational lenses
« Reply #7 on: September 15, 2007, 06:53:30 am »
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587742632815690167

I was hesitant in posting this, and think its unlikely but...

The navigation identifies the 'ball' as a star, and single stars don't leave trials. So if it is a star, what's bending the galaxy/gas???

s

altymczuk

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Re: Possible strong gravitational lenses
« Reply #8 on: September 15, 2007, 09:04:11 am »
Likely a projection effect of a star in front of a small edge-on galaxy in the background.
If you learn from your mistakes you are less likely to repeat them, and as a bonus, you're a bit wiser at the end of the day.

Alice

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Re: Possible strong gravitational lenses
« Reply #9 on: September 15, 2007, 10:01:43 am »
Probably not one. But just in case . . . it's weird . . .


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Alice

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Re: Possible strong gravitational lenses
« Reply #10 on: September 15, 2007, 10:24:15 am »
Again probably not - but an intriguing crescent shape:


587738066193088755

Showed much more clearly in Galaxy Analysis - as follows:

ElisabethB

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Re: Possible strong gravitational lenses
« Reply #11 on: September 15, 2007, 11:21:03 am »

altymczuk

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Re: Possible strong gravitational lenses
« Reply #12 on: September 15, 2007, 01:23:42 pm »
The second looks possible, but I don't see the expected distortions.
If you learn from your mistakes you are less likely to repeat them, and as a bonus, you're a bit wiser at the end of the day.

thaumielx72

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Re: Possible strong gravitational lenses
« Reply #13 on: September 15, 2007, 02:00:46 pm »
SDSS J082836.99+430515.4

It's a bit shaky, I know, but I thought it was worth more scrutiny.  So here it is posted for you to appraise.  Any attempt of mine to navigate to the blue part simply re-centers on the orange blob.
Z for the blob is 0.136.  If there is any way to use SDSS to ascertain the spectra of the blue part I would like to know it.


fluffyporcupine

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Re: Possible strong gravitational lenses
« Reply #14 on: September 15, 2007, 03:24:58 pm »
like thaumielx72 it just stays on the centre when try to click on it in navigate. other possiblilty is a broken arm. do we have a hospital thread? ;) ;D

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