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Doppler and modulation tomography of XTE J1118+480 in quiescence

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Calvelo, D. E., Vrtilek, Saeqa Dil, Steeghs, D. (Danny), 1972-, Torres, M. A. P., Neilsen, J., Filippenko, A. V. and González Hernández, J. I.. (2009) Doppler and modulation tomography of XTE J1118+480 in quiescence. Monthly Notices of the Royal Astronomical Society, Vol.399 (No.2). pp. 539-549. ISSN 0035-8711

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Official URL: http://dx.doi.org/10.1111/j.1365-2966.2009.15304.x

Abstract

We present Doppler and modulation tomography of the X-ray nova XTE J1118+480 with data obtained during quiescence using the 10-m Keck II telescope. The hotspot where the gas stream hits the accretion disc is seen in H alpha, H beta, He i lambda 5876 and Ca ii lambda 8662, thus verifying the presence of continued mass transfer within the system. The disc is clearly seen in H alpha and Ca ii lambda 8662. We image the mass-donor star in narrow absorption lines of Na i lambda lambda 5890, 5896, 8183, 8195 and Ca ii lambda 8662, implying an origin from the secondary itself rather than the interstellar medium. We also detect deviations in the centroid of the double peak of H alpha akin to those found by Zurita et al. suggesting disc eccentricity.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	X-ray binaries
Journal or Publication Title:	Monthly Notices of the Royal Astronomical Society
Publisher:	Wiley-Blackwell Publishing, Inc
ISSN:	0035-8711
Date:	21 October 2009
Volume:	Vol.399
Number:	No.2
Number of Pages:	11
Page Range:	pp. 539-549
Identification Number:	10.1111/j.1365-2966.2009.15304.x
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	W. M. Keck Foundation, National Science Foundation (U.S.) (NSF), European Commission (EC)
Grant number:	AST-0507637 (NSF), AST-0607485 (NSF), MEXT-CT-2004-014265 (EC)
Related URLs:	Other Repository
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URI:	http://wrap.warwick.ac.uk/id/eprint/17156