Doppler and modulation tomography of XTE J1118+480 in quiescence

D. E. Calvelo; Saeqa D. Vrtilek; D. Steeghs; Manuel A P Torres; J Neilsen; Alex V Filippenko; J. I. González Hernández

doi:10.1111/j.1365-2966.2009.15304.x

Doppler and modulation tomography of XTE J1118+480 in quiescence

D. E. Calvelo, Saeqa D. Vrtilek, D. Steeghs, Manuel A P Torres, J Neilsen, Alex V Filippenko, J. I. González Hernández

Research output: Contribution to journal › Article › Research › peer-review

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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 Hα, H, He i λ5876 and Ca ii λ8662, thus verifying the presence of continued mass transfer within the system. The disc is clearly seen in Hα and Ca ii λ8662. We image the mass-donor star in narrow absorption lines of Na i λλ5890, 5896, 8183, 8195 and Ca ii λ8662, implying an origin from the secondary itself rather than the interstellar medium. We also detect deviations in the centroid of the double peak of Hα akin to those found by Zurita et al. suggesting disc eccentricity.

Original language	English
Pages (from-to)	539-549
Number of pages	11
Journal	Monthly Notices of the Royal Astronomical Society
Volume	399
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2966.2009.15304.x
Publication status	Published - Oct 2009
Externally published	Yes

Keywords

Accretion, accretion discs
Binaries: close
Stars: individual: XTE J1118+480

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10.1111/j.1365-2966.2009.15304.x

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title = "Doppler and modulation tomography of XTE J1118+480 in quiescence",

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 Hα, H, He i λ5876 and Ca ii λ8662, thus verifying the presence of continued mass transfer within the system. The disc is clearly seen in Hα and Ca ii λ8662. We image the mass-donor star in narrow absorption lines of Na i λλ5890, 5896, 8183, 8195 and Ca ii λ8662, implying an origin from the secondary itself rather than the interstellar medium. We also detect deviations in the centroid of the double peak of Hα akin to those found by Zurita et al. suggesting disc eccentricity.",

keywords = "Accretion, accretion discs, Binaries: close, Stars: individual: XTE J1118+480",

author = "Calvelo, {D. E.} and Vrtilek, {Saeqa D.} and D. Steeghs and Torres, {Manuel A P} and J Neilsen and Filippenko, {Alex V} and {Gonz{\'a}lez Hern{\'a}ndez}, {J. I.}",

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T1 - Doppler and modulation tomography of XTE J1118+480 in quiescence

AU - Calvelo, D. E.

AU - Vrtilek, Saeqa D.

AU - Steeghs, D.

AU - Torres, Manuel A P

AU - Neilsen, J

AU - Filippenko, Alex V

AU - González Hernández, J. I.

PY - 2009/10

Y1 - 2009/10

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AB - 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 Hα, H, He i λ5876 and Ca ii λ8662, thus verifying the presence of continued mass transfer within the system. The disc is clearly seen in Hα and Ca ii λ8662. We image the mass-donor star in narrow absorption lines of Na i λλ5890, 5896, 8183, 8195 and Ca ii λ8662, implying an origin from the secondary itself rather than the interstellar medium. We also detect deviations in the centroid of the double peak of Hα akin to those found by Zurita et al. suggesting disc eccentricity.

KW - Accretion, accretion discs

KW - Binaries: close

KW - Stars: individual: XTE J1118+480

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JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

Doppler and modulation tomography of XTE J1118+480 in quiescence

Abstract

Keywords

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