The helium abundance in the ejecta of U Scorpii

M. P. Maxwell; M. T. Rushton; M. J. Darnley; H. L. Worters; M. F. Bode; A. Evans; S. P.S. Eyres; M. B.N. Kouwenhoven; F. M. Walter; B. J.M. Hassall

doi:10.1017/S1743921312014974

The helium abundance in the ejecta of U Scorpii

M. P. Maxwell^*
, M. T. Rushton
, M. J. Darnley
, H. L. Worters
, M. F. Bode
, A. Evans
, S. P.S. Eyres
, M. B.N. Kouwenhoven
, F. M. Walter
, B. J.M. Hassall

^*Corresponding author for this work

University of Central Lancashire
Liverpool John Moores University
South African Astronomical Observatory
Keele University
Peking University
Stony Brook University

Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review

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.

Original language	English
Title of host publication	Binary Paths to Type Ia Supernovae Explosions
Publisher	Cambridge University Press
Pages	190-192
Number of pages	3
Edition	S281
ISBN (Print)	9781107019812
DOIs	https://doi.org/10.1017/S1743921312014974
Publication status	Published - Jul 2011
Externally published	Yes

Publication series

Name	Proceedings of the International Astronomical Union
Number	S281
Volume	7
ISSN (Print)	1743-9213
ISSN (Electronic)	1743-9221

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being

Keywords

Abundances
Cataclysmic variables
Individual (U Scorpii)
Stars: novae

Access to Document

10.1017/S1743921312014974

Cite this

Maxwell, M. P., Rushton, M. T., Darnley, M. J., Worters, H. L., Bode, M. F., Evans, A., Eyres, S. P. S., Kouwenhoven, M. B. N., Walter, F. M., & Hassall, B. J. M. (2011). The helium abundance in the ejecta of U Scorpii. In Binary Paths to Type Ia Supernovae Explosions (S281 ed., pp. 190-192). (Proceedings of the International Astronomical Union; Vol. 7, No. S281). Cambridge University Press. https://doi.org/10.1017/S1743921312014974

@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",

}

Maxwell, MP, Rushton, MT, Darnley, MJ, Worters, HL, Bode, MF, Evans, A, Eyres, SPS, Kouwenhoven, MBN, Walter, FM & Hassall, BJM 2011, The helium abundance in the ejecta of U Scorpii. in Binary Paths to Type Ia Supernovae Explosions. S281 edn, Proceedings of the International Astronomical Union, no. S281, vol. 7, Cambridge University Press, pp. 190-192. https://doi.org/10.1017/S1743921312014974

The helium abundance in the ejecta of U Scorpii. / Maxwell, M. P.; Rushton, M. T.; Darnley, M. J. et al.
Binary Paths to Type Ia Supernovae Explosions. S281. ed. Cambridge University Press, 2011. p. 190-192 (Proceedings of the International Astronomical Union; Vol. 7, No. S281).

Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review

TY - GEN

T1 - The helium abundance in the ejecta of U Scorpii

AU - Maxwell, M. P.

AU - Rushton, M. T.

AU - Darnley, M. J.

AU - Worters, H. L.

AU - Bode, M. F.

AU - Evans, A.

AU - Eyres, S. P.S.

AU - Kouwenhoven, M. B.N.

AU - Walter, F. M.

AU - Hassall, B. J.M.

PY - 2011/7

Y1 - 2011/7

N2 - 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.

AB - 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.

KW - Abundances

KW - Cataclysmic variables

KW - Individual (U Scorpii)

KW - Stars: novae

UR - https://www.scopus.com/pages/publications/84872705938

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DO - 10.1017/S1743921312014974

M3 - Conference Proceeding

AN - SCOPUS:84872705938

SN - 9781107019812

T3 - Proceedings of the International Astronomical Union

SP - 190

EP - 192

BT - Binary Paths to Type Ia Supernovae Explosions

PB - Cambridge University Press

ER -

The helium abundance in the ejecta of U Scorpii

Abstract

Publication series

UN SDGs

Keywords

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