uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Gaia FGK benchmark stars: abundances of α and iron-peak elements
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Observational Astronomy.
Show others and affiliations
2015 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 582, A81Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2015. Vol. 582, A81
Keyword [en]
methods: data analysis, stars: atmospheres, Galaxy: abundances
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-266199DOI: 10.1051/0004-6361/201526604ISI: 000363538500081OAI: oai:DiVA.org:uu-266199DiVA: diva2:867547
Funder
EU, FP7, Seventh Framework Programme, 320360Swedish National Space Board
Available from: 2015-11-05 Created: 2015-11-05 Last updated: 2017-12-01Bibliographically approved

Open Access in DiVA

fulltext(1888 kB)235 downloads
File information
File name FULLTEXT01.pdfFile size 1888 kBChecksum SHA-512
2bffe8014dc3ec92a6e2c41b9b276b29b218fb8cbd0fc3a8fc53a0206980f7c538285fe73b531118cc7e58df5033f32e1741e78c878b203f6dc181b69a2991bb
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Authority records BETA

Heiter, UlrikeNordlander, ThomasLind, Karin

Search in DiVA

By author/editor
Heiter, UlrikeNordlander, ThomasLind, Karin
By organisation
Observational AstronomyDepartment of Physics and Astronomy
In the same journal
Astronomy and Astrophysics
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar
Total: 235 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 867 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf