2025ApJ...993..232S -
Astrophys. J., 993, 232 (2025/November-2)
Comprehensive Listing of 208 Nova White Dwarf Masses as the Primary Determinant of Spectral Class and Light-curve Class.
SCHAEFER B.E.
Abstract (from CDS):
For Galactic novae, I calculate and collect a comprehensive catalog of 208 measures of white dwarf (WD) masses (MWD) and 232 measures of average V magnitudes in quiescence (Vq). These are collected into a comprehensive catalog of most fundamental properties of all 402 known Galactic novae. The nova light curve and spectral classes are determined primarily by MWD. With an apparently clean cutoff, novae with light-curve shapes in the S, P, O, and C classes have >0.95 M⊙, while the J, D, and F class novae have <0.95 M⊙. The speed class of the light curves is t3 = $1{0}^{(-1.73{M}_{{\rm{WD}}})}$ × 1900 days. The spectral class of novae is Fe II below 1.15 M⊙, is He/N above 1.15 M⊙, and the hybrid novae are spread around this division. Neon novae have WD masses ranging from 0.53 to 1.37 M⊙, with 76% being measured to be below their minimum formation mass of 1.2 M⊙, demonstrating that most are losing mass over each eruption cycle. The FWHM velocity of the Balmer line profiles is close to 0.23 times the WD escape velocity, or roughly $1{0}^{({M}_{{\rm{WD}}}/2)}$ × 500 km s–1 for <1.3 M⊙. And all the known Galactic recurrent novae are >1.2 M⊙. For issues involving the late expansion of the ejecta, I find that the visibility of shells is strongly biased toward novae with orbital periods <0.33 day, and that the visibility of γ-rays from the shells is strongly biased toward novae with fast declines, with t3 as a proxy for the γ-ray luminosity.
Abstract Copyright:
© 2025. The Author(s). Published by the American Astronomical Society.
Journal keyword(s):
Novae - Recurrent novae - Fast novae - Slow novae
Status at CDS
:
Large table(s) will be appraised for possible ingestion in VizieR.
Simbad objects:
411
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