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Open AccessArticle

VALD: The Meeting Point of Data Producers and Data Users

Institute of Astronomy, Russian Academy of Sciences, 119017 Moscow, Russia
Department of Physics and Astronomy, Division of Astronomy and Space Physics, Uppsala University, 751 20 Uppsala, Sweden
Author to whom correspondence should be addressed.
Galaxies 2018, 6(3), 93;
Received: 25 June 2018 / Revised: 2 August 2018 / Accepted: 30 August 2018 / Published: 3 September 2018
(This article belongs to the Special Issue Atomic and Molecular Data Needs for Astronomy and Astrophysics)
Vienna Atomic Line Database (VALD) contains data on atomic and molecular energy levels and parameters of spectral lines required for stellar spectra analysis. Hundreds of millions of lines for fine spectral synthesis and for opacity calculations are collected in the present version of VALD (VALD3). Critical evaluation of the data and the diversity of extraction tools support the high popularity of VALD among users. The data model of VALD3 incorporates obligatory links to the bibliography making our database more attractive as a publishing platform for data producers. The VALD data quality and completeness are constantly improving allowing better reproduction of stellar spectra. To illustrate continuous evolution of the data content we present a comparative analysis of the recent experimental and theoretical atomic data for Fe-group elements, which will be included in the next VALD release. This release will also include a possibility for extracting the line data with full isotopic and hyperfine structures. View Full-Text
Keywords: stellar spectra; atomic and molecular data; databases stellar spectra; atomic and molecular data; databases
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Ryabchikova, T.; Pakhomov, Y.; Piskunov, N. VALD: The Meeting Point of Data Producers and Data Users. Galaxies 2018, 6, 93.

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