Time-resolved spectroscopy of the M15 X-ray binary AC211/X2127+119

@article{MAPTorres2003TimeresolvedSO,
  title={Time-resolved spectroscopy of the M15 X-ray binary AC211/X2127+119},
  author={M.A.P.Torres and Paul J. Callanan and Middlebury College and Cork and Ireland Harvard-Smithsonian Center for Astrophysics},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2003},
  volume={341},
  pages={1231-1238}
}
We present time-resolved spectroscopy acquired during two epochs (spaced apart by ∼15 d) of the eclipsing low-mass X-ray binary AC211/X2127+119 in the globular cluster M15. The spectra show variations in the Hell λ4686 emission line not only modulated on the orbital period, but also on time-scales of a few days. During the first epoch of observation, the emission line shows a strong S-wave superimposed on the average double-peaked profile. The line exhibits no evidence of rotational disturbance… 

Figures and Tables from this paper

Phase-resolved spectroscopy of the low-mass X-ray binary V801 Ara
We present phase-resolved optical spectra of the low mass X-ray binary system V801 Ara. The spectra, obtained in 2014 with IMACS on the Magellan/Baade telescope at Las Campanas Observatory, cover the
Multiwavelength observations of EXO 0748-676. II. Emission-line behavior
We present optical and ultraviolet spectra, light curves, and Doppler tomograms of the low-mass X-ray binary EXO 0748-676. Using an extensive set of 15 emission-line tomograms, we show that, along
BeppoSAX-WFC monitoring of the Galactic Center region
Abstract We review the results obtained with the Galactic center campaigns of the BeppoSAX Wide Field X-ray Cameras (WFCs). This pertains to the study of luminous low-mass X-ray binaries (LMXBs).

References

SHOWING 1-10 OF 36 REFERENCES
Understanding the LMXB X2127+119 in M 15 - I. X-ray eclipses and dips
We present X-ray observations of the high-inclination low-mass X-ray binary system X2127+119 (AC211) in the globular cluster M15 (NGC 7078). The observations consist of data acquired in 1996 with the
UV spectroscopy of the X-ray binary AC211 ( = 4U2127 + 11) in M15⋆
We present time-resolved International Ultraviolet Explorer observations of the low-mass X-ray binary AC211/4U2127+11 in the globular cluster M15 (NGC 7078). The spectra show He II 1640-A emission,
A Second Intense Burst with Photospheric Radius Expansion from X2127+119 in M15
In 2000 September we observed a bright X-ray burst from X2127+119 with the Rossi X-Ray Timing Explorer. This burst has a multipeaked profile, a peak luminosity of ~6.5 × 1038 ergs s-1, a total
An emission-line object in the core of M15
Optical identification of globular cluster X-ray sources is essential if their evolutionary state and relation to the galactic bulge sources is to be understood. The 10 high-luminosity (1036 erg
Discovery of an X-ray burst from X2127+11 in the globular cluster M15
THE nature and evolution of binary X-ray sources in globular clusters are poorly understood. Among the ∼10 bright X-ray sources in globular clusters, X2127+11 in M15 is very important because it is
Mass outflow from the X-ray binary X2127 + 119 in M15
The bright X-ray binary X2127 + 119 in the core of the globular cluster M15 has long been thought to be in an unusual evolutionary state, in which the binary is embedded in a common envelope. Support
Period Derivative of the M15 X-Ray Binary AC211/X2127+119
Abstract We have combined Rossi X-ray Timing Explorer observations of X2127+119, the low-mass X-ray binary in the globular cluster M15, with archival X-ray lightcurves to study the stability of the
Emission-line mapping of the dwarf nova IP Pegasi in outburst and quiescence
Time-resolved spectroscopy covering half an orbit and one eclipse during an outburst of the dwarf nova IP Peg are presented and compared with quiescent data. The outburst spectra show strong Balmer
An EUVE Observation of the Globular Cluster M15: The First Detection of a Low-Mass X-Ray Binary?
We have detected EUV emission from the globular cluster M15 using the Deep Survey Photometer aboard the Extreme Ultraviolet Explorer. The emission is variable at the 97% confidence level. The minimum
Ultracompact X-Ray Binaries in Globular Clusters: Variability of the Optical Counterpart of X1832-330 in NGC 6652.
TLDR
Although the orbital period of the source in NGC 1851 is not yet explicitly measured, it is demonstrated that previous correlations of optical luminosity with X-ray luminosity and accretion disk size, strengthened by recent data, strongly imply that the period of that system is also less than 1 hr.
...
1
2
3
4
...