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High-frequency carbon recombination line as a probe to study the environment of Ultra-compact HII regions
Published online by Cambridge University Press: 01 August 2006
Abstract
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The far-ultra violet (6 – 13.6 eV) photons from the OB stars in Ultra-compact HII regions (UCHs) produce photo-dissociation regions (PDRs) at the interface between the ionized and the natal molecular material. In this paper, we show that carbon recombination lines (CRLs) at frequencies greater than a few GHz are detectable from these PDRs and such observations can be used to: (1) estimate the physical properties of the PDR material; (2) study the kinematics of the PDR material relative to the HII region gas; (3) constrain the magnetic fields in the vicinity of UCHs and (4) address the lifetime problem of UCHs.
- Type
- Contributed Papers
- Information
- Proceedings of the International Astronomical Union , Volume 2 , Symposium S237: Triggered Star Formation in a Turbulent ISM , August 2006 , pp. 469
- Copyright
- Copyright © International Astronomical Union 2007
References
Roshi, D. A., Balser, D. S., Bania, T. M., Goss, W. M., & de Pree, C. G. 2005, ApJ 625, 181CrossRefGoogle Scholar
Roshi, D. A., Goss, W. M., Anantharamaiah, K. R., & Jeyakumar, S. 2005, ApJ 626, 253CrossRefGoogle Scholar
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