Orbital Parameters for the Black Hole Binary XTE J1650–500*

@article{Orosz2004OrbitalPF,
  title={Orbital Parameters for the Black Hole Binary XTE J1650–500*},
  author={Jerome A. Orosz and Jeffrey E. McClintock and Ronald A. Remillard and St{\'e}phane Corbel},
  journal={The Astrophysical Journal},
  year={2004},
  volume={616},
  pages={376-382}
}
We present R-band photometry of the X-ray transient and candidate black hole binary XTE J1650-500 obtained between 2003 May and August with the 6.5 m Clay telescope. A timing analysis of these data reveals a photometric period of 0.3205 ± 0.0007 days (i.e., 7.63 hr) with a possible alias at 0.3785 days (9.12 hr). Our photometry completely rules out the previously published spectroscopic period of 0.212 days (5.09 hr). Consequently, we reanalyzed the 15 archival ESO VLT spectra (obtained 2002… Expand

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