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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/27263
Title: Non-thermal photons and direct photodissociation of H2, HD and HeH+ in the chemistry of the primordial Universe
Authors: Coppola, C. M.
Kazandjian, M. V.
GALLI, Daniele 
Heays, A. N.
van Dishoeck, E. F.
Issue Date: 2017
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 470
Issue: 4
First Page: 4163
Abstract: Non-thermal photons deriving from radiative transitions among the internal ladder of atoms and molecules are an important source of photons in addition to thermal and stellar sources in many astrophysical environments. In the present work, the calculation of reaction rates for the direct photodissociation of some molecules relevant in early Universe chemistry is presented; in particular, the calculations include non-thermal photons deriving from the recombination of primordial hydrogen and helium atoms for the cases of H2, HD and HeH+. New effects on the fractional abundances of chemical species are investigated and the fits for the HeH+ photodissociation rates by thermal photons are provided.
URI: http://hdl.handle.net/20.500.12386/27263
URL: https://academic.oup.com/mnras/article-abstract/470/4/4163/3862546?redirectedFrom=fulltext
https://arxiv.org/abs/1706.02300
ISSN: 0035-8711
DOI: 10.1093/mnras/stx1397
Bibcode ADS: 2017MNRAS.470.4163C
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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