The Belgian Repository of Fundamental Atomic Data and Stellar Spectra (BRASS)
Background: BRASS (Belgian Repository of Fundamental Atomic Data and Stellar Spectra) 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 resea...
| Main Authors: | , , , , , , , , , |
|---|---|
| Formato: | Artigo |
| Idioma: | English |
| Publicado: |
MDPI AG
2019-11-01
|
| Series: | Atoms |
| Subjects: | |
| Acceso en liña: | https://www.mdpi.com/2218-2004/7/4/105 |
| _version_ | 1831619162594607104 |
|---|---|
| author | Alex Lobel Pierre Royer Christophe Martayan Michael Laverick Thibault Merle Mathieu Van der Swaelmen Peter A. M. van Hoof Marc David Herman Hensberge Emmanuel Thienpont |
| author_facet | Alex Lobel Pierre Royer Christophe Martayan Michael Laverick Thibault Merle Mathieu Van der Swaelmen Peter A. M. van Hoof Marc David Herman Hensberge Emmanuel Thienpont |
| author_sort | Alex Lobel |
| collection | DOAJ |
| description | Background: BRASS (Belgian Repository of Fundamental Atomic Data and Stellar Spectra) 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 in the past four years. Methods: 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 F-, G-, and K-type 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, VALD, CHIANTI, Spectr-W<inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mn>3</mn> </msup> </semantics> </math> </inline-formula>, TIPbase, TOPbase, SpectroWeb. Results: The atomic datasets have been cross-matched based on line electronic configuration information and organized in a new online repository called BRASS. The validated atomic data, combined with the observed and theoretical spectra are also interactively offered in BRASS. The combination of these datasets is a novel approach for its development providing a universal reference for advanced stellar spectroscopic research. Conclusion: 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(<i>gf</i>)-values, and line equivalent width measurements. |
| first_indexed | 2024-12-18T20:52:24Z |
| format | Article |
| id | doaj.art-c38c0d0d751e4c6ca8b4b4d29b81cc4c |
| institution | Directory Open Access Journal |
| issn | 2218-2004 |
| language | English |
| last_indexed | 2024-12-18T20:52:24Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atoms |
| spelling | doaj.art-c38c0d0d751e4c6ca8b4b4d29b81cc4c2022-12-21T20:53:23ZengMDPI AGAtoms2218-20042019-11-017410510.3390/atoms7040105atoms7040105The Belgian Repository of Fundamental Atomic Data and Stellar Spectra (BRASS)Alex Lobel0Pierre Royer1Christophe Martayan2Michael Laverick3Thibault Merle4Mathieu Van der Swaelmen5Peter A. M. van Hoof6Marc David7Herman Hensberge8Emmanuel Thienpont9Royal Observatory of Belgium, Ringlaan 3, B-1180 Brussels, BelgiumInstituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, Box 2401, 3001 Leuven, BelgiumEuropean Organisation for Astronomical Research in the Southern Hemisphere, Alonso de Córdova 3107, Vitacura, 19001 Casilla, Santiago de Chile, ChileInstituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, Box 2401, 3001 Leuven, BelgiumInstitut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles, Av. Franklin Roosevelt 50, CP 226, 1050 Brussels, BelgiumInstitut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles, Av. Franklin Roosevelt 50, CP 226, 1050 Brussels, BelgiumRoyal Observatory of Belgium, Ringlaan 3, B-1180 Brussels, BelgiumOnderzoeksgroep Toegepaste Wiskunde, Universiteit Antwerpen, Middelheimlaan 1, 2020 Antwerp, BelgiumRoyal Observatory of Belgium, Ringlaan 3, B-1180 Brussels, BelgiumVereniging voor Sterrenkunde, Kapellebaan 56, 2811 Leest, BelgiumBackground: BRASS (Belgian Repository of Fundamental Atomic Data and Stellar Spectra) 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 in the past four years. Methods: 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 F-, G-, and K-type 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, VALD, CHIANTI, Spectr-W<inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mn>3</mn> </msup> </semantics> </math> </inline-formula>, TIPbase, TOPbase, SpectroWeb. Results: The atomic datasets have been cross-matched based on line electronic configuration information and organized in a new online repository called BRASS. The validated atomic data, combined with the observed and theoretical spectra are also interactively offered in BRASS. The combination of these datasets is a novel approach for its development providing a universal reference for advanced stellar spectroscopic research. Conclusion: 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(<i>gf</i>)-values, and line equivalent width measurements.https://www.mdpi.com/2218-2004/7/4/105quantitative stellar spectroscopyspectral linesatomic line dataatomic and spectral databases |
| spellingShingle | Alex Lobel Pierre Royer Christophe Martayan Michael Laverick Thibault Merle Mathieu Van der Swaelmen Peter A. M. van Hoof Marc David Herman Hensberge Emmanuel Thienpont The Belgian Repository of Fundamental Atomic Data and Stellar Spectra (BRASS) Atoms quantitative stellar spectroscopy spectral lines atomic line data atomic and spectral databases |
| title | The Belgian Repository of Fundamental Atomic Data and Stellar Spectra (BRASS) |
| title_full | The Belgian Repository of Fundamental Atomic Data and Stellar Spectra (BRASS) |
| title_fullStr | The Belgian Repository of Fundamental Atomic Data and Stellar Spectra (BRASS) |
| title_full_unstemmed | The Belgian Repository of Fundamental Atomic Data and Stellar Spectra (BRASS) |
| title_short | The Belgian Repository of Fundamental Atomic Data and Stellar Spectra (BRASS) |
| title_sort | belgian repository of fundamental atomic data and stellar spectra brass |
| topic | quantitative stellar spectroscopy spectral lines atomic line data atomic and spectral databases |
| url | https://www.mdpi.com/2218-2004/7/4/105 |
| work_keys_str_mv | AT alexlobel thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT pierreroyer thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT christophemartayan thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT michaellaverick thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT thibaultmerle thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT mathieuvanderswaelmen thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT peteramvanhoof thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT marcdavid thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT hermanhensberge thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT emmanuelthienpont thebelgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT alexlobel belgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT pierreroyer belgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT christophemartayan belgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT michaellaverick belgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT thibaultmerle belgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT mathieuvanderswaelmen belgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT peteramvanhoof belgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT marcdavid belgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT hermanhensberge belgianrepositoryoffundamentalatomicdataandstellarspectrabrass AT emmanuelthienpont belgianrepositoryoffundamentalatomicdataandstellarspectrabrass |