000004922 001__ 4922
000004922 005__ 20200614180244.0
000004922 037__ $$aCTALK-2020-0123
000004922 100__ $$aLobel, Alex
000004922 245__ $$aThe Belgian Repository of fundamental Atomic data and Stellar Spectra
000004922 260__ $$c2019
000004922 269__ $$c2019-11-27
000004922 520__ $$aBRASS is an international networking project for the development of a new public database providing accurate fundamental atomic data of vital importance for stellar spectroscopic research. We present an overview of research results obtained over the past years. The BRASS database offers atomic line data we thoroughly tested by comparing theoretical and observed stellar spectra. We perform extensive quality assessments of selected atomic input data using advanced radiative transfer spectrum synthesis calculations, which we compare to high-resolution Mercator-HERMES and ESO-VLT-UVES spectra of FGK benchmark stars observed with very high signal-to-noise ratios. \\ We have retrieved about half a million atomic lines required for our detailed spectrum synthesis calculations from the literature and online databases such as VAMDC, NIST ADS, VALD3, CHIANTI, Spectr-W3 , TIP/TOPBASE, SpectroWeb. The atomic datasets have been cross-matched based on line electronic configuration information and organized in a new online repository at brass.sdf.org [1]. The validated atomic data, combined with the observed and theoretical spectra are also interactively offered in BRASS [2]. The combination of these datasets is a novel approach for its development providing a universal reference for advanced stellar spectroscopic research. We present an overview of the BRASS Data Interface developments allowing online user interaction for the combined spectrum and atomic data display, line identification, atomic data accuracy assessments including line log(gf)-values [3], and line equivalent width measurements. References: [1] Laverick, M., Lobel, A., Merle, T., et al., Astronomy & Astrophysics, 612 (2018) A60. [2] Lobel, A., Royer, P., Martayan, C., et al., Can. Journal of Physics, 95 (2017) 833. [3] Laverick, M., Lobel, A., Royer, P., et al., Astronomy & Astrophysics, 624 (2019) A60.
000004922 536__ $$aBR/$$c143/$$fA2/BRASS
000004922 594__ $$aNO
000004922 6531_ $$aComputational Atomic and Nuclear Structures for Nuclear, Plasma and Astrophysics
000004922 700__ $$aThe BRASS Team, -
000004922 773__ $$tSolvay Workshop on "New Frontiers in Atomic, Nuclear, Plasma and Astrophysics", 25-27 Nov 2019, Univ. Libre de Bruxelles, Belgium
000004922 8560_ $$falex.lobel@observatoire.be
000004922 85642 $$ahttp://www.solvayinstitutes.be/event/workshop/new_frontiers_2019/new_frontiers_2019.html
000004922 85642 $$ahttp://www.solvayinstitutes.be/event/workshop/new_frontiers_2019/slides_cts/Lobel.pdf
000004922 906__ $$aContributed
000004922 980__ $$aCTALKCONT