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Chemical clocks and...
Chemical clocks and their time zones: understanding the [s/Mg]–age relation with birth radii
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- Ratcliffe, Bridget (author)
- Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany
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- Minchev, Ivan (author)
- Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany
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- Cescutti, Gabriele (author)
- Dipartimento di Fisica, Sezione di Astronomia, Università di Trieste, via G. B. Tiepolo 11, I-34143 Trieste, Italy; INAF, Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, I-34131 Trieste, Italy; INFN, Sezione di Trieste, Via A. Valerio 2, I-34127 Trieste, Italy
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- Spitoni, Emanuele (author)
- INAF, Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, I-34131 Trieste, Italy
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- Jönsson, Henrik (author)
- Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM)
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- Anders, Friedrich (author)
- Dept. de Física Quàntica i Astrofísica (FQA), Universitat de Barcelona (UB), C Martí i Franqués, 1, E-08028 Barcelona, Spain; Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (UB), C Martí i Franqués, 1, E-08028 Barcelona, Spain; Institut d’Estudis Espacials de Catalunya (IEEC), C Gran Capità, 2-4, E-08034 Barcelona, Spain
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- Queiroz, Anna (author)
- Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany; Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro RJ-20921-400, Brazil; Institut für Physik und Astronomie, Universität Potsdam, Haus 28 Karl-Liebknecht-Str 24/25, D-14476 Golm, Germany
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- Steinmetz, Matthias (author)
- Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany
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Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany Dipartimento di Fisica, Sezione di Astronomia, Università di Trieste, via G B. Tiepolo 11, I-34143 Trieste, Italy; INAF, Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, I-34131 Trieste, Italy; INFN, Sezione di Trieste, Via A. Valerio 2, I-34127 Trieste, Italy (creator_code:org_t)
- Oxford University Press, 2024
- 2024
- English.
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In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press. - 0035-8711 .- 1365-2966. ; 528:2, s. 3464-3472
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Abstract
Subject headings
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- The relative enrichment of s-process to α-elements ([s/α]) has been linked with age, providing a potentially useful avenue in exploring the Milky Way’s chemical evolution. However, the age–[s/α] relationship is non-universal, with dependencies on metallicity and current location in the Galaxy. In this work, we examine these chemical clock tracers across birth radii (?birth), recovering the inherent trends between the variables. We derive ?birth and explore the [s/α]–age–?birth relationship for 36 652 APOGEE DR17 red giant and 24 467 GALAH DR3 main-sequence turn-off and subgiant branch disc stars using [Ce/Mg], [Ba/Mg], and [Y/Mg]. We discover that the age–[?/Mg] relation is strongly dependent on birth location in the Milky Way, with stars born in the inner disc having the weakest correlation. This is congruent with the Galaxy’s initially weak, negative [?/Mg] radial gradient, which becomes positive and steep with time. We show that the non-universal relations of chemical clocks is caused by their fundamental trends with ?birth over time, and suggest that the tight age–[?/Mg] relation obtained with solar-like stars is due to similar ?birth for a given age. Our results are put into context with a Galactic chemical evolution model, where we demonstrate the need for data-driven nucleosynthetic yields.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- stars: abundances
- Galaxy: abundances
- Galaxy: disc
- Galaxy: evolution
Publication and Content Type
- ref (subject category)
- art (subject category)
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