› Forums › Variable Stars › Nova Cas 2021 › Spectral changes
28 April 2021 at 9:34 pm
#584140
![](https://britastro.org/wp-content/uploads/2020/12/picture-1252-1607548133-80x80.jpg)
Participant
A recent Astronomer’s telegram, ATel 14577, details changes in the spectrum with the emergence of iron lines. Lots of spectra on the ARAS web site show these lines developing with He I lines fading.
The He I lines labelled in my low res spectrum from 23rd April may actually be Fe II instead… More spectra planned when the skies clear again…