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Home List of Titles The kinetic temperature in a damped Lyman alpha absorption system in Q2206-199: an example of the warm neutral medium
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/219742
- The kinetic temperature in a damped Lyman alpha absorption system in Q2206-199: an example of the warm neutral medium
- Carswell, R. F.; Becker, G. D.; Jorgenson, R. A.; Murphy, M. T.; Wolfe, A. M.
- By comparing the widths of absorption lines from O i, Si ii and Fe ii in the redshift zabs= 2.076 single-component damped Lyα system in the spectrum of Q2206−199 we establish that these absorption lines arise in warm neutral medium (WNM) gas at ∼12 000 ± 3000 K. This is consistent with thermal equilibrium model estimates of ∼8000 K for the WNM in galaxies, but not with the presence of a significant cold component. It is also consistent with, but not required by, the absence of C ii fine structure absorption in this system. Some possible implications concerning abundance estimates in narrow-line WNM absorbers are discussed.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Astrophysics and Supercomputing
- Monthly Notices of the Royal Astronomical Society, Vol. 422, no. 2 (May 2012), pp. 1700-1708
- Publication year
- FOR Code(s)
- 0201 Astronomical and Space Sciences
- Absorption lines; Q2206-199; Quasars
- Publisher URL
- Copyright © 2012 The Author. Monthly Notices of the Royal Astronomical Society copyright © 2012 RAS.
- Research Projects
Galaxy formation and femtosecond frequency combs, Australian Research Council grant number DP0877998
- Peer reviewed