Reply To: New supernova SN 2026aaiv in NGC 7331

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#642801
Robin Leadbeater
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

  • This reply was modified 1 month, 2 weeks ago by Robin Leadbeater. Reason: added TNS link