Author Topic: supernovae thread  (Read 66207 times)

Edd

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Re: supernovae thread
« Reply #15 on: August 21, 2007, 12:34:11 pm »
No problem! Any problems with it do post back and I'll try to help out. Or send a PM.
When I look up at the night sky and think about the billions of stars out there, I think to myself: I'm amazing. - Peter Serafinowicz

rmarzi

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Re: supernovae thread
« Reply #16 on: August 21, 2007, 12:34:32 pm »
if they r not supernovae what are they then , if u rule out superimposition and star forming region , what can they be ?
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zookeeperKevin

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Re: supernovae thread
« Reply #17 on: August 21, 2007, 12:56:25 pm »
They're foreground stars.


Anyway, even if you find a supernova (say), it's still no help for anything, as we won't be able to get a spectrum for it. It'll have disappeared long ago.

rmarzi

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fluffyporcupine

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Re: supernovae thread
« Reply #20 on: August 23, 2007, 10:21:06 am »
how about this one? The bright blue dot is what my target is btw. Had a look on the link Edd posted but can't zoom in enough

588015508750729251 could just be a particulally bright star forming region tho, but jumped out at me as so circular!

Edd

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Re: supernovae thread
« Reply #21 on: August 23, 2007, 11:12:11 am »
It's in the stripe that the supernova survey covers, so if it were one it'd already have been spotted. I got a couple of images from a year or two apart anyway, and it's identical in both.
When I look up at the night sky and think about the billions of stars out there, I think to myself: I'm amazing. - Peter Serafinowicz

fluffyporcupine

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Re: supernovae thread
« Reply #22 on: August 23, 2007, 11:12:52 am »
thanks Edd!

rmarzi

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rmarzi

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Re: supernovae thread
« Reply #24 on: August 24, 2007, 09:57:59 am »
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watchingthesky

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Re: supernovae thread
« Reply #25 on: August 25, 2007, 08:59:29 pm »
rmarzi, did you verify your "supernovae" are not in earlier images?  As I've stated before, superimposed stars from the Milky Way are extremely common and are often mistaken for supernova.  As Edd has said, the professionals have already searched the images for supernovae.  What ones were found, they would be listed at this site which I've linked to before:  bright supernovae.

Here is a great false alarm.  I was pretty excited when seeing it, but I verified the star on the arm to the right is a much earlier image.

587739381789032486

From the SDSS


From DSS
The stars were as thick as weeds in an unkempt field... - Isaac Asimov, Foundation and Empire

rmarzi

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Re: supernovae thread
« Reply #26 on: August 27, 2007, 08:04:51 am »
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rmarzi

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Re: supernovae thread
« Reply #27 on: August 27, 2007, 12:22:06 pm »
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giandani

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Re: supernovae thread
« Reply #28 on: August 27, 2007, 02:26:51 pm »

watchingthesky

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Re: supernovae thread
« Reply #29 on: August 28, 2007, 12:41:38 am »
rmarzi, those are not supernovae.  They are in the much earlier images from the DSS.





Please research before posting as supernovae!


giandani,  yours is more difficult.  I checked several of the images from the DSS.  Some seem to show a bump in the image where the object lies.  You have to enlarge the photo to really see it.


The stars were as thick as weeds in an unkempt field... - Isaac Asimov, Foundation and Empire