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Gaia FGK benchmark ...
Gaia FGK benchmark stars : abundances of α and iron-peak elements
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Jofré, P. (author)
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- Heiter, Ulrike (author)
- Uppsala universitet,Observationell astrofysik
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Soubiran, C. (author)
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Blanco-Cuaresma, S. (author)
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Masseron, T. (author)
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- Nordlander, Thomas (author)
- Uppsala universitet,Institutionen för fysik och astronomi
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Chemin, L. (author)
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Worley, C. C. (author)
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Van Eck, S. (author)
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Hourihane, A. (author)
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Gilmore, G. (author)
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Adibekyan, V. (author)
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Bergemann, M. (author)
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Cantat-Gaudin, T. (author)
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Delgado-Mena, E. (author)
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González Hernández, J. I. (author)
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Guiglion, G. (author)
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Lardo, C. (author)
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de Laverny, P. (author)
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- Lind, Karin (author)
- Uppsala universitet,Institutionen för fysik och astronomi
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Magrini, L. (author)
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Mikolaitis, S. (author)
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Montes, D. (author)
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Pancino, E. (author)
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Recio-Blanco, A. (author)
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Sordo, R. (author)
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Sousa, S. (author)
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Tabernero, H. M. (author)
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Vallenari, A. (author)
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(creator_code:org_t)
- 2015-10-13
- 2015
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 582
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https://uu.diva-port... (primary) (Raw object)
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https://www.aanda.or...
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https://doi.org/10.1...
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Abstract
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- Context. In the current era of large spectroscopic surveys of the Milky Way, reference stars for calibrating astrophysical parameters and chemical abundances are of paramount importance. Aims. We determine elemental abundances of Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Co, and Ni for our predefined set of Gaia FGK benchmark stars. Methods. By analysing high-resolution spectra with a high signal-to-noise ratio taken from several archive datasets, we combined results of eight different methods to determine abundances on a line-by-line basis. We performed a detailed homogeneous analysis of the systematic uncertainties, such as differential versus absolute abundance analysis. We also assessed errors that are due to non-local thermal equilibrium and the stellar parameters in our final abundances. Results. Our results are provided by listing final abundances and the different sources of uncertainties, as well as line-by-line and method-by-method abundances. Conclusions. The atmospheric parameters of the Gaia FGK benchmark stars are already being widely used for calibration of several pipelines that are applied to different surveys. With the added reference abundances of ten elements, this set is very suitable for calibrating the chemical abundances obtained by these pipelines.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- methods: data analysis
- stars: atmospheres
- Galaxy: abundances
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Jofré, P.
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Heiter, Ulrike
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Soubiran, C.
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Blanco-Cuaresma, ...
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Masseron, T.
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Nordlander, Thom ...
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show more...
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Chemin, L.
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Worley, C. C.
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Van Eck, S.
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Hourihane, A.
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Gilmore, G.
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Adibekyan, V.
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Bergemann, M.
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Cantat-Gaudin, T ...
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Delgado-Mena, E.
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González Hernánd ...
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Guiglion, G.
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Lardo, C.
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de Laverny, P.
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Lind, Karin
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Magrini, L.
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Mikolaitis, S.
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Montes, D.
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Pancino, E.
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Recio-Blanco, A.
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Sordo, R.
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Sousa, S.
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Tabernero, H. M.
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Vallenari, A.
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show less...
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- NATURAL SCIENCES
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Uppsala University