Detection of interstellar oxidaniumyl : Abundant H2O+ towards the star-forming regions DR21, Sgr B2, and NGC6334

@article{Ossenkopf2010DetectionOI,
  title={Detection of interstellar oxidaniumyl : Abundant H2O+ towards the star-forming regions DR21, Sgr B2, and NGC6334},
  author={V. Ossenkopf and H. Muller and D. Lis and P. Schilke and T. Bell and S. Bruderer and E. Bergin and C. Ceccarelli and C. Comito and J. Stutzki and A. Bacman and A. Baudry and A. Benz and M. Benedettini and O. Bern{\'e} and G. Blake and A. Boogert and S. Bottinelli and F. Boulanger and S. Cabrit and P. Caselli and E. Caux and J. Cernicharo and C. Codella and A. Coutens and N. Crimier and N. Crockett and F. Daniel and K. Demyk and P. Dieleman and C. Dominik and M. Dubernet and M. Emprechtinger and P. Encrenaz and E. Falgarone and K. France and A. Fuente and M. Gerin and T. Giesen and A. M. Giorgio and J. Goicoechea and P. Goldsmith and R. Gusten and A. Harris and F. Helmich and E. Herbst and P. Hily-Blant and K. Jacobs and T. Jacq and C. Joblin and D. Johnstone and C. Kahane and M. Kama and T. Klein and A. Klotz and C. Kramer and W. Langer and B. Lefloch and C. Leinz and A. Lorenzani and S. Lord and S. Maret and P. Martin and J. Mart{\'i}n-Pintado and C. McCoey and M. Melchior and G. Melnick and K. Menten and B. Mookerjea and P. Morris and J. A. Murphy and D. Neufeld and B. Nisini and S. Pacheco and L. Pagani and B. Parise and J. Pearson and M. P'erault and T. Phillips and R. Plume and Sally Quin and R. Rizzo and M. Rollig and M. Salez and P. Saraceno and S. Schlemmer and R. Simon and K. Schuster and F. D. Tak and A. Tielens and D. Teyssier and N. Trappe and C. Vastel and S. Viti and V. Wakelam and A. Walters and S. Wang and N. Whyborn and M. Wiel and H. Yorke and S. Yu and J. Zmuidzinas},
  journal={Astronomy and Astrophysics},
  year={2010},
  volume={518},
  pages={111}
}
Aims: We identify a prominent absorption feature at 1115 GHz, detected in first HIFI spectra towards high-mass star-forming regions, and interpret its astrophysical origin. Methods: The characteristic hyperfine pattern of the H2O+ ground-state rotational transition, and the lack of other known low-energy transitions in this frequency range, identifies the feature as H2O+ absorption against the dust continuum background and allows us to derive the velocity profile of the absorbing gas. By… Expand

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References

SHOWING 1-10 OF 32 REFERENCES
Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6–0.4
HIFI observations of warm gas in DR21: Shock versus radiative heating
Far-infrared spectroscopy of the DR 21 star formation region
Ground-state OH observations towards NGC 6334
ISO ammonia line absorption reveals a layer of hot gas veiling Sgr B2
The cooling of atomic and molecular gas in DR21
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