spectral classification of an "invisible" supernova

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spectral classification of an "invisible" supernova

Postby Robin Leadbeater » Thu Apr 15, 2021 3:41 pm

I have been experimenting with taking spectra of supernovae embedded in galaxy cores. Transient AT 2021huw was only detectable in images after subtraction of a template image of the galaxy. I used a similar technique to subtract the galaxy component in the spectrum to reveal the supernova spectrum, using an archive spectrum of the galaxy from SDSS.

sn2021huw_20210406_882_Leadbeater_annot.png (53.54 KiB) Viewed 290 times

The resulting spectrum was good enough to identify the transient as a type Ia supernova and officially confirm it in TNS. more details on my BAA page
https://britastro.org/observations/obse ... 46791a7e8b

LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
Robin Leadbeater
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Joined: Mon Sep 26, 2011 4:41 pm

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