Detection of H3+ in the Diffuse Interstellar Medium: The Galactic Center and Cygnus OB2 Number 12

@article{Geballe1999DetectionOH,
  title={Detection of H3+ in the Diffuse Interstellar Medium: The Galactic Center and Cygnus OB2 Number 12},
  author={T. Geballe and B. McCall and K. Hinkle and T. Oka},
  journal={The Astrophysical Journal},
  year={1999},
  volume={510},
  pages={251-257}
}
Absorption lines of have been detected in the spectra of two infrared sources in the Galactic H 3 center and also toward the heavily reddened star Cygnus OB2 No. 12, whose line of sight is believed to include only diUuse interstellar gas. The absorptions toward the Galactic center sources (IRS 3 and GCS 3-2) probably are due to both in diUuse gas and in molecular clouds. The ratios of line equiva- H 3 H 3 lent width to extinction toward these three sources are much greater than those toward… Expand
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