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2011A&A...532L..11M - Astronomy and Astrophysics, volume 532, L11-11 (2011/8-1)
U Scorpii 2010 outburst: observational evidence of an underlying ONeMg white dwarf.
MASON E.
Abstract (from CDS):
This paper presents USco nebular spectra collected in the period March-May 2010 after the binary outburst on Jan. 28, 2010. The spectra display strong [Nev] and [Neiii] lines that can be used to compute the relative abundance of [Ne/O]. The value obtained ([Ne/O]=1.69) is higher than the typical [Ne/O] abundance found in classical novae from CO progenitors and suggests that USco has a ONeMg white-dwarf progenitor. It follows that USco will not explode as a SNIa but rather collapse to become a neutron star or a millisecond pulsar.
Abstract Copyright: ∼
Journal keyword(s): novae, cataclysmic variables - stars: individual: U Sco
Errata: + corrigendum vol. 556, p. C2 (2013)
Simbad objects: 32
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