Time-resolved X-Shooter spectra and RXTE light curves of the ultra-compact X-ray binary candidate 4U 0614+091

O. K. Madej; P. G. Jonker; P. J. Groot; L. M. van Haaften; G. Nelemans; Thomas Maccarone

Time-resolved X-Shooter spectra and RXTE light curves of the ultra-compact X-ray binary candidate 4U 0614+091

O. K. Madej, P. G. Jonker, P. J. Groot, L. M. van Haaften, G. Nelemans, Thomas Maccarone

Physics

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

Abstract

In this paper we present X-Shooter time-resolved spectroscopy and RXTE PCA light curves of the ultra-compact X-ray binary candidate 4U 0614+091. The X-Shooter data are compared to the GMOS data analysed previously by Nelemans et al. We confirm the presence of CIII and OII emission features at ≈4650 Å and ≈5000 Å. The emission lines do not show evident Doppler shifts that could be attributed to the motion of the donor star/hotspot around the centre of mass of the binary. We note a weak periodic signal in the red-wing/blue-wing flux ratio of the emission feature at ≈4650 Å. The signal occurs at P = 30.23 ± 0.03 min in the X-Shooter and at P = 30.468 ± 0.006 min in the GMOS spectra when the source was in the low/hard state. Due to aliasing effects the period in the GMOS and X-Shooter data could well be the same. We deem it likely that the orbital period is thus close to 30 min; however, as several photometric periods have been reported for this source in the literature already, further c

Original language	English
Pages (from-to)	2013
Journal	Monthly Notices of the Royal Astronomical Society
State	Published - Mar 2013

Fingerprint Dive into the research topics of 'Time-resolved X-Shooter spectra and RXTE light curves of the ultra-compact X-ray binary candidate 4U 0614+091'. Together they form a unique fingerprint.

Cite this

@article{3ce6cca337de4e8eabf3382ca2731b4a,

title = "Time-resolved X-Shooter spectra and RXTE light curves of the ultra-compact X-ray binary candidate 4U 0614+091",

abstract = "In this paper we present X-Shooter time-resolved spectroscopy and RXTE PCA light curves of the ultra-compact X-ray binary candidate 4U 0614+091. The X-Shooter data are compared to the GMOS data analysed previously by Nelemans et al. We confirm the presence of CIII and OII emission features at ≈4650 {\AA} and ≈5000 {\AA}. The emission lines do not show evident Doppler shifts that could be attributed to the motion of the donor star/hotspot around the centre of mass of the binary. We note a weak periodic signal in the red-wing/blue-wing flux ratio of the emission feature at ≈4650 {\AA}. The signal occurs at P = 30.23 ± 0.03 min in the X-Shooter and at P = 30.468 ± 0.006 min in the GMOS spectra when the source was in the low/hard state. Due to aliasing effects the period in the GMOS and X-Shooter data could well be the same. We deem it likely that the orbital period is thus close to 30 min; however, as several photometric periods have been reported for this source in the literature already, further c",

author = "Madej, {O. K.} and Jonker, {P. G.} and Groot, {P. J.} and Haaften, {L. M. van} and G. Nelemans and Thomas Maccarone",

year = "2013",

month = mar,

language = "English",

pages = "2013",

journal = "Monthly Notices of the Royal Astronomical Society",

}

TY - JOUR

T1 - Time-resolved X-Shooter spectra and RXTE light curves of the ultra-compact X-ray binary candidate 4U 0614+091

AU - Madej, O. K.

AU - Jonker, P. G.

AU - Groot, P. J.

AU - Haaften, L. M. van

AU - Nelemans, G.

AU - Maccarone, Thomas

PY - 2013/3

Y1 - 2013/3

N2 - In this paper we present X-Shooter time-resolved spectroscopy and RXTE PCA light curves of the ultra-compact X-ray binary candidate 4U 0614+091. The X-Shooter data are compared to the GMOS data analysed previously by Nelemans et al. We confirm the presence of CIII and OII emission features at ≈4650 Å and ≈5000 Å. The emission lines do not show evident Doppler shifts that could be attributed to the motion of the donor star/hotspot around the centre of mass of the binary. We note a weak periodic signal in the red-wing/blue-wing flux ratio of the emission feature at ≈4650 Å. The signal occurs at P = 30.23 ± 0.03 min in the X-Shooter and at P = 30.468 ± 0.006 min in the GMOS spectra when the source was in the low/hard state. Due to aliasing effects the period in the GMOS and X-Shooter data could well be the same. We deem it likely that the orbital period is thus close to 30 min; however, as several photometric periods have been reported for this source in the literature already, further c

AB - In this paper we present X-Shooter time-resolved spectroscopy and RXTE PCA light curves of the ultra-compact X-ray binary candidate 4U 0614+091. The X-Shooter data are compared to the GMOS data analysed previously by Nelemans et al. We confirm the presence of CIII and OII emission features at ≈4650 Å and ≈5000 Å. The emission lines do not show evident Doppler shifts that could be attributed to the motion of the donor star/hotspot around the centre of mass of the binary. We note a weak periodic signal in the red-wing/blue-wing flux ratio of the emission feature at ≈4650 Å. The signal occurs at P = 30.23 ± 0.03 min in the X-Shooter and at P = 30.468 ± 0.006 min in the GMOS spectra when the source was in the low/hard state. Due to aliasing effects the period in the GMOS and X-Shooter data could well be the same. We deem it likely that the orbital period is thus close to 30 min; however, as several photometric periods have been reported for this source in the literature already, further c

M3 - Article

SP - 2013

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -