SN 2023zaw: An Ultrastripped, Nickel-poor Supernova from a Low-mass Progenitor

We present SN 2023zaw—a subluminous ( M _r = −16.7 mag) and rapidly evolving supernova ( t _1/2, _r = 4.9 days), with the lowest nickel mass (≈0.002 M _⊙ ) measured among all stripped-envelope supernovae discovered to date. The photospheric spectra are dominated by broad He i and Ca near-infrared em...

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Bibliographic Details

Published in:	The Astrophysical Journal Letters
Main Authors:	Kaustav K. Das, Christoffer Fremling, Mansi M. Kasliwal, Steve Schulze, Jesper Sollerman, Viraj Karambelkar, Sam Rose, Shreya Anand, Igor Andreoni, Marie Aubert, Sean J. Brennan, S. Bradley Cenko, Michael W. Coughlin, B. O’Connor, Kishalay De, Jim Fuller, Matthew Graham, Erica Hammerstein, Annastasia Haynie, K-Ryan Hinds, Io Kleiser, S. R. Kulkarni, Zeren Lin, Chang Liu, Ashish A. Mahabal, Christopher Martin, Adam A. Miller, James D. Neill, Daniel A. Perley, Priscila J. Pessi, Nikolaus Z. Prusinski, Josiah Purdum, Vikram Ravi, Ben Rusholme, Samantha Wu, Avery Wold, Lin Yan
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Subjects:	Core-collapse supernovae Type Ib supernovae Compact binary stars Stellar mass loss Roche lobe overflow
Online Access:	https://doi.org/10.3847/2041-8213/ad527a