A New LISA-detectable Type Ia Supernova Progenitor in the Southern Sky: SMSS J1138−5139

We present the discovery and analysis of a nearby eclipsing ultracompact accreting binary SMSS J1138−5139, the first well-constrained LISA-detectable Type Ia supernova progenitor. Our time-series optical spectroscopy identifies its orbital period through radial velocity monitoring at ${P}_{\mathrm{o...

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Bibliographic Details
Main Authors: Alekzander Kosakowski, Matti Dorsch, Warren R. Brown, Thomas Kupfer, Fatma Ben Daya, Mukremin Kilic
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal
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Online Access:https://doi.org/10.3847/1538-4357/add1cf
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