Lobel, A. ; Royer, P. ; Martayan, C. ; Laverick, M. ; van Hoof, P.A.M. ; Merle, T. ; Van der Swaelmen, M. ; David, M. ; Hensberge, H. ; Thienpont, E.

published in Belgian Science Policy Office 2020 BRAIN-be - Belgian Research Action through Interdisciplinary Networks , 2012-2017, pp. 1-57 (2020)

Abstract: Accurate atomic line transition data are fundamental input parameters in astrophysics. Spectrum synthesis calculations are of central importance for the development of complex models that describe, analyse and explain stars and planets, their internal structures, atmospheres, and evolution in relation to their environments. Uncertainties and errors in adopted fundamental atomic data may systematically propagate throughout all fields of astrophysics, from star-planet formation to large-scale galactic evolution. It is very difficult to obtain accurate fundamental atomic data of astrophysical interest from laboratory measurements. There are only a limited number of repositories that offer these important atomic data values. The atomic repositories are often complementary rather than redundant, and can provide incomplete or inaccurate information. Important quality assessments of the provided atomic data values are scarce (and mostly absent), which very much complicates the validation of results that follow from their application.

Keyword(s): Atomic transition data ; Stars ; Spectroscopy ; Spectral lines ; Databases
Note: Project Summary in English, French, and Dutch language also available at https://www.belspo.be/belspo/brain-be/themes_2_GeoUniClim_nl.stm#BRASS
DOI: 10.48550/arXiv.1712.07678
Links: link
Funding: BR/143/A2/BRASS