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A Warm Supergiant May Have Preceded SN 2026dix
Archival Hubble imaging and post-explosion data point to a binary progenitor.
Summary
Archival Hubble imaging and post-explosion data point to a binary progenitor.
A study of nearby transitional Type IIb/Ib supernova SN 2026dix found a point source at its location in multiple pre-explosion Hubble images. Light curves, spectra and stellar-model comparisons favor an interacting binary with a warm, luminous supergiant primary, estimated at roughly 6,750 to 7,750 kelvin, and a less luminous hot dwarf companion. The identification is consistent with the data and models; the presumed progenitor has not been established by a direct pre-explosion spectrum.
Why it matters
Archival Hubble imaging and post-explosion data point to a binary progenitor.
Limits and context
- The identification is consistent with the data and models; the presumed progenitor has not been established by a direct pre-explosion spectrum.
Key claims
Archival Hubble imaging and post-explosion data point to a binary progenitor.
Qualification: The identification is consistent with the data and models; the presumed progenitor has not been established by a direct pre-explosion spectrum.
Evidence: source-2026-09-21-012
Sources
- arXiv preprint 2609.21836arXiv · primary research
Corrections
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