# Resonant H – Photodetachment: Enhanced Photodestruction and Consequences for Radiative Feedback

 Title: Resonant H – Photodetachment: Enhanced Photodestruction and Consequences for Radiative Feedback Author: Miyake, S.; Stancil, P. C.; Sadeghpour, Hossein R.; Dalgarno, Alexander; McLaughlin, B. M.; Forrey, R. C. Note: Order does not necessarily reflect citation order of authors. Citation: Miyake, S., P. C. Stancil, H. R. Sadeghpour, A. Dalgarno, B. M. McLaughlin, and R. C. Forrey. 2010. “ Resonant H – Photodetachment: Enhanced Photodestruction and Consequences for Radiative Feedback.” The Astrophysical Journal 709 (2) (January 14): L168–L171. doi:10.1088/2041-8205/709/2/l168. http://dx.doi.org/10.1088/2041-8205/709/2/L168. Full Text & Related Files: 2041-8205_709_2_L168-1.pdf (328.4Kb; PDF) Abstract: The hydrogen negative ion plays a crucial role in the formation of hydrogen molecules in the early universe. Cooling through excitation of $$H_2$$ drives the formation of the first cosmological objects. The $$H_2$$ molecules are produced primarily by a reaction sequence initiated by $$H^–$$. We explore the influence of enhanced photodestruction rates that arise due to absorption by resonance states of $$H^–$$ lying near 11 eV. We examine the feedback effects that occur in radiation fields characteristic of Population III stars, blackbody sources, power-law spectra, and the hydrogen Lyman modulated sawtooth spectra of the high-redshift intergalactic medium. Published Version: doi:10.1088/2041-8205/709/2/L168 Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:22565794 Downloads of this work: