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astro-ph.SR2025
Orbital Period Changes of Recurrent Nova U Scorpii Demonstrate that M=26M and Is Not a Type Ia Supernova Progenitor
Bradley E. Schaefer, Gordon Myers
Recurrent nova U Scorpii (U Sco) is one of the prototypes for a Type Ia supernova progenitor. The logic is that the white dwarf is near the Chandrasekhar mass and gas is accumulati…
astro-ph.SR2025★ 4 cited
Revisiting the extremely long-period cataclysmic variables V479 Andromedae and V1082 Sagitarii
Gagik Tovmassian, Diogo Belloni, Anna F. Pala +56
The overwhelming majority of CVs have orbital periods shorter than 10 hr. However, a few have much longer periods, and their formation and existence pose challenges for the CV evol…