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Rebassa-Mansergas, A, Maldonado, J, Raddi, R, Knowles, AT, Torres, S, Hoskin, M, Cunningham, T, Hollands, M, Ren, J, Gansicke, BT, Tremblay, P-E, Castro-Rodriguez, N, Camisassa, M and Koester, D (2021) Constraining the solar neighbourhood age-metallicity relation from white dwarf-main sequence binaries. Monthly Notices of the Royal Astronomical Society, 505 (3). pp. 3165-3176. ISSN 0035-8711
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Abstract
The age-metallicity relation (AMR) is a fundamental tool for constraining the chemical evolution of the Galactic disc. In this work, we analyse the observational properties of this relation using binary stars that have not interacted consisting of a white dwarf (WD) - from which we can derive the total age of the system - and a main sequence (MS) star - from which we can derive the metallicity as traced by the [Fe/H] abundances. Our sample consists of 46 widely separated, but unresolved spectroscopic binaries identified within the Sloan Digital Sky Survey, and 189 WD plus MS common proper motion pairs identified within the second data release of Gaia. This is currently the largest WD sample for which the metallicity of their progenitors have been determined. We find a flat AMR displaying a scatter of [Fe/H] abundances of approximately ±0.5 dex around the solar metallicity at all ages. This independently confirms the lack of correlation between age and metallicity in the solar neighbourhood that is found in previous studies focused on analysing single MS stars and open clusters.
| Item Type: | Article |
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| Additional Information: | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2021 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved |
| Uncontrolled Keywords: | Science & Technology; Physical Sciences; Astronomy & Astrophysics; techniques: spectroscopic; stars: abundances; binaries: spectroscopic; stars: low-mass; white dwarfs; solar neighbourhood; COMMON-ENVELOPE BINARIES; DIGITAL-SKY-SURVEY; MILKY-WAY; CHEMICAL EVOLUTION; PULSATIONAL PROPERTIES; STAR-FORMATION; GALACTIC DISK; F-DWARF; SDSS; SAMPLE; Science & Technology; Physical Sciences; Astronomy & Astrophysics; techniques: spectroscopic; stars: abundances; binaries: spectroscopic; stars: low-mass; white dwarfs; solar neighbourhood; COMMON-ENVELOPE BINARIES; DIGITAL-SKY-SURVEY; MILKY-WAY; CHEMICAL EVOLUTION; STELLAR PARAMETERS; STAR-FORMATION; GALACTIC DISK; F-DWARF; SDSS; ABUNDANCES; astro-ph.SR; astro-ph.SR; astro-ph.GA; 0201 Astronomical and Space Sciences; Astronomy & Astrophysics |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Research & Innovation Services |
| Publisher: | Oxford University Press |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 25 Mar 2024 15:38 |
| Last Modified: | 25 Mar 2024 15:45 |
| DOI or ID number: | 10.1093/mnras/stab1559 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/22912 |
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