28 October 2020 at 6:04 pm
#583307
![](https://britastro.org/wp-content/uploads/2019/04/picture-14-1555163046-80x80.jpg)
Participant
You’re right. I tend to be very lax and use the term nova for anything that varies in M31. Transient would be a much better term to use. That spectrum doesn’t look very nova like. It is very close to the core though so how do you stop the spectrum being polluted by the background?