Observation by Robin Leadbeater: SN 2026dix spectrum - a type IIb superno...

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Robin Leadbeater

Observer

Robin Leadbeater

Observed

2026 Mar 07 - 20:18

Uploaded

2026 Mar 09 - 17:59

Objects

Spectrum
NGC3913

Equipment

ALPY 200 spectrograph
ATIK 428 ex camera
Celestron C11 SCT 280mm aperture f5.5

Exposure

4240s (7x600s)

Location

Wigton, Cumbria UK

Target name

SN 2026dix in NGC 3913

Title

SN 2026dix spectrum - a type IIb supernova in NGC 3913

About this image

Taken 19 days after discovery when ~mag 16 (sloan g). SNID-SAGE gives an excellent match to type IIb supernovae near maximum light.

Type IIb are relatively rare, representing only ~2% of classified supernovae in TNS. They are characterised by both Hydrogen and Helium appearing in the spectrum (though not necessarily both at all epochs) and are an example of a stripped core collapse supernova, intermediate between normal type II which show only H and stripped core type lb which show only He

Files associated with this observation

SN2026dix_poster.png (307.6 kB)

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Dominic Ford, Callum Potter

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