uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Inelastic Mg plus H collision data for non-LTE applications in stellar atmospheres
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Astrophysics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Show others and affiliations
2012 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 541, A80- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2012. Vol. 541, A80- p.
Keyword [en]
atomic data, line: formation, stars: abundances
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-176832DOI: 10.1051/0004-6361/201219081ISI: 000304390900080OAI: oai:DiVA.org:uu-176832DiVA: diva2:537340
Available from: 2012-06-26 Created: 2012-06-26 Last updated: 2012-10-18Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Barklem, Paul
By organisation
Theoretical AstrophysicsDepartment of Physics and Astronomy
In the same journal
Astronomy and Astrophysics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 533 hits
ReferencesLink to record
Permanent link

Direct link