Celestial hemisphere:  Northern  ·  Constellation: Lyra (Lyr)  ·  Contains:  NGC 6695  ·  PGC 62296
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NGC6695 and supernova SN2019eix with animation!, lowenthalm
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NGC6695 and supernova SN2019eix with animation!

Getting plate-solving status, please wait...
NGC6695 and supernova SN2019eix with animation!, lowenthalm
Powered byPixInsight

NGC6695 and supernova SN2019eix with animation!

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Description

I captured multiple images of this object on four different nights over several weeks around May 30, 2019, for the purpose of observing and measuring the magnitude changes of super nova SN 2019eix. The supernova can be seen here appearing as the bright(ish) yellow "star" within the central bar just to the left of the galaxy's nucleus. I had a total of 7 images eight minute images, so I stacked them to produce this image. Version B of the image shows a gif animation of the supernova brightness change on the available clear nights between 2019-05-24 and 2019-06-23 (which has a three week gap on account of clouds!).

A lot of information on the supernova is accessible through links on the Transient Name Server web page for this object (in the end, the internet is a wonderful invention) at:

https://wis-tns.weizmann.ac.il/object/2019eix

The supernova was of type Ic, caused by the core collapse of a star that has blown off nearly all of its hydrogen and helium outer envelope prior to exploding. No doubt this produces a pretty gorgeous nebula once the supernova's light catches up to the ejected material. Sadly, this galaxy and its supernova are much too far away to ever hope to detect the post-explosion nebula.

Some info on type Ic supernovae:

https://astronomy.swin.edu.au/cosmos/T/Type+Ic+Supernova

The galaxy itself is an attractive 13.5 magnitude (V) barred spiral of type SBb and is quite distant at about 370 million light years away. From our distant vantage point, its dimensions on the sky are only 50 by 90 arc seconds which makes it just slightly larger than the hole in the ring nebula (M57). Close up and personal, the galaxy is actually a big spiral at about 130,000 light years in diameter, based on its size on the sky and distance. This gives it about a 30% larger diameter than our own galaxy. Its moving away from us at 1.8% of the speed of light. This probably isn't enough to produce the yellowing, so I suspect the color comes from attenuation of the supernova's light by dust in the host galaxy.

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  • Final
    NGC6695 and supernova SN2019eix with animation!, lowenthalm
    Original
  • NGC6695 and supernova SN2019eix with animation!, lowenthalm
    B

B

Description: Animation of supernova brightness change. Big skip between 5/30 and 6/23 was unavoidable because of a lack of clear nights.

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NGC6695 and supernova SN2019eix with animation!, lowenthalm