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SN2016coj in NGC 4125

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#1 Sheliak_sp

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Posted 02 June 2016 - 01:48 PM

Have you seen this? I think it's a very interesting supernova, with magnitude 14.2 now (some days ago it was 14.8), and it very easy to see visually under dark skies, as if NGC 4125 had 2 nucleus. Is it posible to increase more the magnitude or it will be stable? It's said to be a type Ia supernova, located at roughly 70 millions LY distance. Its absolute magnitude is -17.5, and now it shines with the bright of 1.000.000 suns. Do you have more information?

 

https://elnidodelast...va-en-ngc-4125/

 

ngc-4125.png?w=404

 

Clear skies!

 

Migue



#2 Hubert

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Posted 02 June 2016 - 02:20 PM

Is this a sketch? Very nice. I haven't heard of this supernova.  Thanks for the info. 



#3 Sheliak_sp

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Posted 02 June 2016 - 02:39 PM

Yes, sorry, it's a sketch made with a Dob 12". Thank you!

 

Migue



#4 Hubert

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Posted 02 June 2016 - 02:45 PM

Like I said,   :waytogo:



#5 Aquarellia

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Posted 04 June 2016 - 01:04 AM

That's a good alert Migue, thank you for posting that here!

Michel



#6 thomasr

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Posted 04 June 2016 - 11:11 AM

Just wanted to provide my observing report from a dark green site last night. Both seeing and transparency were average at best, yet my humble C6 was able to pick out the nucleus of NGC 4125 as well as the supernova using averted vision.

 

So even with a smaller scope under less-than-perfect conditions, it's worth giving this target a try.



#7 SWN

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Posted 04 June 2016 - 01:42 PM

I observed a supernova 2016coj in NGC 4125  2 and 3 June.Telescope SW2001 - CG5. Visible was sure.

Photo freshman. :blush:

Attached Thumbnails

  • SN 2016coj03.06-2-min.JPG

Edited by SWN, 04 June 2016 - 01:43 PM.


#8 robin_astro

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Posted 06 June 2016 - 02:16 PM

Its absolute magnitude is -17.5, and now it shines with the bright of 1.000.000 suns.

 

an abs visual mag of -17.5 compared with +4.8 for the sun is more like more like 1 billion suns (~10^9)  

type 1a generally max out at -19.3 absolute brightness which is ~5 billion suns 

 

Robin



#9 Rich (RLTYS)

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Posted 07 June 2016 - 08:02 AM

Took this image of SN 2016coj, last evening, using the Slooh T2hm scope.

 

Rich (RLTYS)

Attached Thumbnails

  • NGC 4125 (SN 2016coj) T2hm 6-6-16grn1.png


#10 Sheliak_sp

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Posted 07 June 2016 - 03:20 PM

Great images! Thanks Robin for the point, I missed 000 :) 



#11 robin_astro

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Posted 07 June 2016 - 08:02 PM

Here is my low resolution spectrum from last night (black) compared with the best fit spectrum of a type 1a supernova near maximum from the GELATO database (blue)

 

sn2016coj_20160606_gelatoplot.png

 

Based on the blue shift of the Silicon II absorption band, normally at 6360A, the speed of the material flung out in the explosion is estimated at ~14000km/s

 

Robin



#12 DeanS

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Posted 12 June 2016 - 11:56 AM

I imaged it last night as it was setting with a half moon.

Attached Thumbnails

  • NGC4125-SNcpcn.jpg


#13 Aquarellia

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Posted 12 June 2016 - 12:35 PM

The small NGC4121 is easyly visible too.

A splendid photo Dean!


Edited by Aquarellia, 12 June 2016 - 12:36 PM.


#14 StupendousMan

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Posted 13 June 2016 - 09:49 PM

I'm trying to do a study of this supernova's light curve.  If anyone has images of the SN taken through the standard BVRI filters, and is willing to share them, please contact me: mwrsps@rit.edu.  If I can figure out how to combine your data with mine, and if I end up publishing the light curve, I'll gladly make you a co-author.

 

If you have questions, please feel free to ask.



#15 Aquarellia

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Posted 29 June 2016 - 04:23 AM

I'm trying to do a study of this supernova's light curve.  If anyone has images of the SN taken through the standard BVRI filters, and is willing to share them, please contact me: mwrsps@rit.edu.  If I can figure out how to combine your data with mine, and if I end up publishing the light curve, I'll gladly make you a co-author.

 

If you have questions, please feel free to ask.

 

Hi I send you on your email address two photos made by a friend of mine: Jean-Marie LITSCHIG and the magnitude estimations.

Michel




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