This article has an erratum: [https://doi.org/10.1051/0004-6361/201117440e]
Volume 532, August 2011
|Number of page(s)||4|
|Published online||03 August 2011|
Letter to the Editor
U Scorpii 2010 outburst: observational evidence of an underlying ONeMg white dwarf⋆
Space Telescope Science Institute (STScI),
3700 S. Martin Dr.,
Received: 8 June 2011
Accepted: 18 July 2011
This paper presents U Sco 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 U Sco has a ONeMg white-dwarf progenitor. It follows that U Sco will not explode as a SN Ia but rather collapse to become a neutron star or a millisecond pulsar.
Key words: novae, cataclysmic variables / stars: individual: USco
© ESO, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.