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Inelastic Mg plus H...
Inelastic Mg plus H collision data for non-LTE applications in stellar atmospheres
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- Barklem, Paul (författare)
- Uppsala universitet,Teoretisk astrofysik
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- Belyaev, A. K. (författare)
- Uppsala universitet,Institutionen för fysik och astronomi
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Spielfiedel, A. (författare)
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Guitou, M. (författare)
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Feautrier, N. (författare)
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(creator_code:org_t)
- 2012-05-03
- 2012
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 541, s. A80-
- Relaterad länk:
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Rate coefficients for inelastic Mg+H collisions are calculated for all transitions between the lowest seven levels and the ionic state (charge transfer), namely Mg(3s(2) S-1, 3s3p P-3, 3s3p P-1, 3s4s S-3, 3s4s S-1, 3s3d D-1, 3s4p P-3)+H(1s) and Mg+(3s S-2)+H-. The rate coefficients are based on cross-sections from full quantum scattering calculations, which are themselves based on detailed quantum chemical calculations for the MgH molecule. The data are needed for non-LTE applications in cool astrophysical environments, especially cool stellar atmospheres, and are presented for a temperature range of 500-8000 K. From consideration of the sensitivity of the cross-sections to various uncertainties in the calculations, most importantly input quantum chemical data and the numerical accuracy of the scattering calculations, a measure of the possible uncertainties in the rate coefficients is estimated.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- atomic data
- line: formation
- stars: abundances
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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