@inproceedings{33b0c4b628c1438c9c6e89b10109bf6e,
title = "The helium abundance in the ejecta of U Scorpii",
abstract = "U Scorpii was observed in outburst for the tenth time in January 2010. We obtained optical and near-infrared spectroscopy from which we derive a helium abundance of N(He)/N(H) = 0.056±0.020 from the most reliable lines available; this is lower than most other estimates and indicates that the secondary is not helium-rich, as previous studies have suggested. Velocities are found to be up to 14,000 km s-1 in broad components and up to 1,800 km s-1 in narrow line components. The reddening of U Sco is found to be E(B-V) = 0.14 ± 0.12.",
keywords = "Abundances, Cataclysmic variables, Individual (U Scorpii), Stars: novae",
author = "Maxwell, {M. P.} and Rushton, {M. T.} and Darnley, {M. J.} and Worters, {H. L.} and Bode, {M. F.} and A. Evans and Eyres, {S. P.S.} and Kouwenhoven, {M. B.N.} and Walter, {F. M.} and Hassall, {B. J.M.}",
year = "2011",
month = jul,
doi = "10.1017/S1743921312014974",
language = "English",
isbn = "9781107019812",
series = "Proceedings of the International Astronomical Union",
publisher = "Cambridge University Press",
number = "S281",
pages = "190--192",
booktitle = "Binary Paths to Type Ia Supernovae Explosions",
edition = "S281",
}
