› Forums › General Discussion › Betelgeuse › spectral type
14 February 2020 at 10:37 pm
#582031
![](https://britastro.org/wp-content/uploads/2016/11/picture-146-1478110706-80x80.jpg)
Participant
Yes slightly as seen in the increased depth of the molecular absorption bands (perhaps 1 subdivision eg M2i to M3i?)
https://britastro.org/comment/7649#comment-7649
https://britastro.org/comment/7861#comment-7861
Interestingly there has also been a reduction in H alpha absorption since the start of the year