› Forums › Variable Stars › New supernova SN 2026aaiv in NGC 7331 › Reply To: New supernova SN 2026aaiv in NGC 7331
6 September 2026 at 7:30 pm
#642801
Participant
A quick spectrum last night between breaks in the cloud.
https://britastro.org/specdb/data_graph.php?obs_id=21438
Noisy but clearly a type Ia with a good match to several templates using SNID-SAGE at ~ one week pre maximum. (example attached).
The 6355A Si II absorption is at ~6135A giving an explosion velocity of ~ 9500km/s + 900km/s galaxy redshift = ~10500km/s significantly lower than ~13000km/s two nights earlier from spectra in TNS
Cheers
Robin
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This reply was modified 1 month, 1 week ago by
Robin Leadbeater. Reason: added TNS link

