Author Topic: supernovae thread  (Read 64024 times)

lizardly

  • Hero Member
  • *****
  • Posts: 3061
    • View Profile
Re: supernovae thread
« Reply #30 on: August 28, 2007, 07:53:07 am »
skyservice.pha.jhu.edu/dr6/ImgCutout/getjpeg.aspx?ra=169.29201317372500000000&dec=25.84354679035490000000&scale=0.2741917349257559198113207543&opt=&width=424&height=423&version=2 has a red blob at about 7 o'clock.  Is that possibly a supernova remnant?  I have seen a few like this.  http://skyservice.pha.jhu.edu/dr6/ImgCutout/getjpeg.aspx?ra=190.40968945020700000000&dec=31.99293068136930200000&scale=0.4201068968143103301886792446&opt=&width=424&height=423&version=2 has one at the 9 to 10 o'clock position.  I think these may be SNRs.  Any of my brethren care to weigh in?

giandani

  • Jr. Member
  • **
  • Posts: 74
    • View Profile
Re: supernovae thread
« Reply #31 on: August 29, 2007, 01:01:23 pm »

Another one difficoult to see...

I post it and leave the future generations the duty to check ;)

http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=588017991760675000


this is the DSS image... seems it's not present. (you have to zoom A LOT)

Markusfix

  • Full Member
  • ***
  • Posts: 196
  • ... have always a little time for serching.
    • View Profile
Re: supernovae thread
« Reply #32 on: August 30, 2007, 02:53:38 pm »
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
(Albert Einstein)

giandani

  • Jr. Member
  • **
  • Posts: 74
    • View Profile
« Last Edit: August 30, 2007, 04:00:01 pm by giandani »

rmarzi

  • Hero Member
  • *****
  • Posts: 510
    • View Profile
Orbis non sufficit

giandani

  • Jr. Member
  • **
  • Posts: 74
    • View Profile
Re: supernovae thread
« Reply #35 on: August 31, 2007, 02:09:55 pm »

ElisabethB

  • Hero Member
  • *****
  • Posts: 13200
    • View Profile
Re: supernovae thread
« Reply #36 on: September 01, 2007, 01:25:46 pm »
both NED and SIMBAD say there is a supernova in this one
587731511541563503

ElisabethB

  • Hero Member
  • *****
  • Posts: 13200
    • View Profile
Re: supernovae thread
« Reply #37 on: September 01, 2007, 03:15:40 pm »
and another one (must be my lucky day)
587742571075797174

watchingthesky

  • Full Member
  • ***
  • Posts: 230
  • amateur astronomer
    • View Profile
Re: supernovae thread
« Reply #38 on: September 01, 2007, 09:15:30 pm »
ElisabethB,

For 587731511541563503 = MCG +00-07-084 it had a supernova recorded in 2001.  Checking the archives, the star on this one may be this supernova (SN 2001ij)!  There were several supernovae discovered by the SDSS in 2001.  See IAU Circular 7778.  The Bright Supernova site did not have an archive image to verify.  However, the position looks good if west is to the right and north to the top.  Googling SN 2001ij did not turn up any images.  Checking the SDSS supernova site did not turn up an image.  It is difficult to be certain on the DSS image of the galaxy. 

For 587742571075797174 = MCG +03-29-060 it had a supernova in 1960 and thus would not be in the SDSS image.
The stars were as thick as weeds in an unkempt field... - Isaac Asimov, Foundation and Empire

gz

  • Hero Member
  • *****
  • Posts: 782
    • View Profile
Re: supernovae thread
« Reply #39 on: September 04, 2007, 08:19:01 pm »

Another one difficoult to see...

I post it and leave the future generations the duty to check ;)

http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=588017991760675000


this is the DSS image... seems it's not present. (you have to zoom A LOT)


It is indeed visible. At that low of a resolution, it's never going to appear round, let alone point-like--just look for a little extra brightness in the right spot. It's there.

587742626907226262
http://cas.sdss.org/astro/en/tools/chart/chart.asp?ra=205.82560095&dec=15.27342112

Gosh... this one is quite impossibile to see in DSS...


I see it in the DSS on this one, too. No dice!

Edd

  • Admin
  • Hero Member
  • *****
  • Posts: 2638
    • View Profile
Re: supernovae thread
« Reply #40 on: September 05, 2007, 09:09:26 am »
ElisabethB,

For 587731511541563503 = MCG +00-07-084 it had a supernova recorded in 2001.  Checking the archives, the star on this one may be this supernova (SN 2001ij)!  There were several supernovae discovered by the SDSS in 2001.  See IAU Circular 7778.  The Bright Supernova site did not have an archive image to verify.  However, the position looks good if west is to the right and north to the top.  Googling SN 2001ij did not turn up any images.  Checking the SDSS supernova site did not turn up an image.  It is difficult to be certain on the DSS image of the galaxy. 
The SDSS image was taken late Nov 2001 (so we're seeing the later image, not the earlier EDR one). So yeah, it's 2001ij.
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

quarkspin

  • Hero Member
  • *****
  • Posts: 4206
    • View Profile
Re: supernovae thread Show Galaxy Ref: 588018091
« Reply #41 on: September 10, 2007, 05:50:19 pm »
  Galaxy Ref: 588018091079565409

Unsure about supernovae but is the bright spot one?

Q




 

ilrobi

  • Sr. Member
  • ****
  • Posts: 307
    • View Profile
Re: supernovae thread
« Reply #42 on: September 12, 2007, 11:10:06 am »
Ref.: 587731872850182538


rmarzi

  • Hero Member
  • *****
  • Posts: 510
    • View Profile
Re: supernovae thread
« Reply #43 on: September 12, 2007, 11:52:11 am »
Orbis non sufficit

pluk

  • Hero Member
  • *****
  • Posts: 7161
  • serving coffee on aircraft causes turbulance
    • View Profile
Re: supernovae thread
« Reply #44 on: September 12, 2007, 07:50:38 pm »
Ref: 587741602025439344


I can't tell wether it's there in the DSS image, how does one zoom in on it?

We tend to overestimate the effect of a technology in the short run and underestimate the effect in the long run. - Roy Amara, engineer, futurist (b. 1925)