Ophiuchus 1622–2405: Not a Planetary-Mass Binary

@article{Luhman2007Ophiuchus1N,
  title={Ophiuchus 1622–2405: Not a Planetary-Mass Binary},
  author={K. Luhman and K. Allers and D. Jaffe and M. Cushing and K. Williams and C. Slesnick and W. Vacca},
  journal={The Astrophysical Journal},
  year={2007},
  volume={659},
  pages={1629-1636}
}
We present an analysis of the mass and age of the young low-mass binary Oph 1622-2405. Using resolved optical spectroscopy of the binary, we measure spectral types of M7.25 ± 0.25 and M8.75 ± 0.25 for the A and B components, respectively. We show that our spectra are inconsistent with the spectral types of M9 and M9.5-L0 from Jayawardhana & Ivanov and M9 ± 0.5 and M9.5 ± 0.5 from Close and coworkers. Based on our spectral types and the theoretical evolutionary models of Chabrier and Baraffe, we… Expand
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