Image Details
Caption: Figure 11.
Optical spectrum of SN 2024iss at δt = 27 days compared with the optical spectra of Type IIb SNe 2016gkg, 2011dh, 2013df, and 1993J at similar phases (spectra obtained from WISeREP; O. Yaron & A. Gal-Yam 2012). All spectra are corrected for redshift and extinction.
© 2026. The Author(s). Published by the American Astronomical Society.