@misc{10481/80552,
year = {2022},
month = {9},
url = {https://hdl.handle.net/10481/80552},
abstract = {The precise progenitor system of type Ia supernovae (SNe Ia), whether it is a white dwarf (WD) close to the Chandrasekhar limit or substantially less massive, has been a matter of debate for decades. Recent research by our group on the accretion and simmering phases preceding the explosion of a massive WD has shown that the central density at thermal runaway lies in the range 3.6 −6.3 ×10 9 g cm −3 for reasonable choices of accretion rate on to the WD and progenitor metallicity. In this work, we have computed one-dimensional simulations of the explosion of such WDs, with special emphasis on the chemical composition of the ejecta, which in all cases is extremely rich in neutronized isotopes of chromium ( 54 Cr) and titanium ( 50 Ti). We show that, in order to reconcile such a nucleosynthesis with the isotopic abundances of the Solar system, Chandrasekhar-mass WDs can account for at most 26 per cent of normal-luminosity SNe Ia, or at most 20 per cent of all SNe Ia.},
organization = {MICINN/AEI	I + D + I PGC2018-095317-B-C21},
organization = {FEDER 'A way of doing Europe'},
organization = {INAF-mainstream project 'Type Ia Supernovae Parent Galaxies: Expected Results from LSST'},
organization = {University of Campania Luigi Vanvitelli (Italy)},
organization = {'Programme National de Physique Stellaire' (PNPS) of CNRS/INSU - CEA},
organization = {Centre National D'etudes Spatiales},
organization = {ESO Scientific Visitor Programme in Garching		
PID2021-123110NB-I00},
publisher = {Oxford University Press},
keywords = {Hydrodynamics},
keywords = {Nuclear reactions, nucleosynthesis, abundances},
keywords = {Supernova: general},
keywords = {White dwarfs},
keywords = {Galaxies: abundances},
title = {Chandrasekhar-mass white dwarfs are the progenitors of a small fraction of Type Ia supernovae according to nucleosythesis constraints},
doi = {10.1093/mnrasl/slac103},
author = {Bravo, Eduardo and Domínguez Aguilera, María Inmaculada},
}