Supernova SN 2018gwo

[Robin Leadbeater]

Discovered in ngc4128 by US amateur Patrick Wiggins 2018-09-28.  This spectrum at mag 16.8 confirms it is a type I  supernova, though the sub category, based on  fitting this spectrum to known supernovae, is ambiguous, either Ic or Ia-91T-like

https://wis-tns.weizmann.ac.il/object/2018gwo

Robin

Attachments:

1. 

   sn2018gwo_SNID_fit.png
   

[David Swan]

Thanks Robin. I submitted an image to David Bishop a few days ago now, and I was wondering when the classification would be made. Good job with such a dim one! David

[Robin Leadbeater]

Hi David,

Yes I saw your image. These are really useful as it helps with finding the target and spotting useful nearby guide stars.  It is annoying I could not pin down exactly what type it is. I have had some feedback from a professional using a different fitting program on my spectrum and he favours it being a type 1c. This would makes sense as a 1a-91T-like should be significantly brighter at this distance, though that could be down to extinction.. Hopefully I will get another go before it fades too much and perhaps it will have evolved enough to pin it down.

Cheers

Robin

[Author]

Posts