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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., 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

ISSN:

0035-8711

Official Date:

21 October 2009

Dates:

Date	Event
21 October 2009	Published

Volume:

Vol.399

Number:

No.2

Number of Pages:

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

References:

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