onr:"swepub:oai:lup.lub.lu.se:456ac1f0-8add-4202-ad7f-00337bd0e499"
Search: onr:"swepub:oai:lup.lub.lu.se:456ac1f0-8add-4202-ad7f-00337bd0e499" > Comparative analysi...
- 1 of 1
- Previous record
- Next record
- To hitlist
Comparative analysis of atmospheric parameters from high-resolution spectroscopic sky surveys : APOGEE, GALAH, Gaia-ESO
-
- Hegedus, Viola (author)
- Eötvös Loránd University
-
- Mészáros, Szabolcs (author)
- Eötvös Loránd University
-
- Jofré, Paula (author)
- Diego Portales University
- show more...
- show less...
- (creator_code:org_t)
- 2023-02-14
- 2023
- English.
- In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 670
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Context. SDSS-IV APOGEE-2, GALAH, and Gaia-ESO are high-resolution, ground-based, multi-object spectroscopic surveys providing fundamental stellar atmospheric parameters and multiple elemental abundance ratios for hundreds of thousands of stars of the Milky Way. Data from these and other surveys contribute to investigations of the history and evolution of the Galaxy. Aims. We undertake a comparison between the most recent data releases of these surveys to investigate the accuracy and precision of derived parameters by placing the abundances on an absolute scale. We also discuss the correlations in parameter and abundance differences as a function of main parameters. Uncovering the variants provides a basis to continue the efforts of future sky surveys. Methods. Quality samples from the APOGEE-GALAH (15 537 stars), APOGEE-GES (804 stars), and GALAH-GES (441 stars) overlapping catalogs were collected. We investigated the mean variants between the surveys, and linear trends were also investigated. We compared the slope of correlations and mean differences with the reported uncertainties. Results. The average and scatter of vrad, Teff, log g, [M/H], and vmicro, along with numerous species of elemental abundances in the combined catalogs, show that in general there is a good agreement between the surveys. We find large radial velocity scatters ranging from 1.3 km s-1 to 4.4 km s-1 when comparing the three surveys. We observe some weak trends (e.g., in Teff vs. log g for the APOGEE-GES stars) and a clear correlation in the vmicro - vmicro planes in the APOGEE-GALAH common sample. For [α/H], [Ti/H] (APOGEE-GALAH giants), and [Al/H] (APOGEE-GALAH dwarfs) potential strong correlations are discovered as a function of the differences in the main atmospheric parameters, and we also find weak trends for other elements. Conclusions. In general we find good agreement between the three surveys within their respective uncertainties. However, there are certain regimes in which strong variants exist, which we discuss. There are still offsets larger than 0.1 dex in the absolute abundance scales.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Galaxies: general
- Galaxy: abundances
- Galaxy: evolution
- Galaxy: fundamental parameters
- Techniques: radial velocities
- Techniques: spectroscopic
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
- Astronomy and Astrophysics (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Hegedus, Viola
- Mészáros, Szabol ...
- Jofré, Paula
- Stringfellow, Gu ...
- Feuillet, Diane
- García-Hernández ...
- show more...
- Nitschelm, Chris ...
- Zamora, Olga
- show less...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- and Astronomy Astrop ...
- Articles in the publication
- Astronomy and As ...
- By the university
- Lund University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
