Constraining the solar neighbourhood age-metallicity relation from white dwarf-main sequence binaries

被引：36

作者：

Rebassa-Mansergas, A. ^{[1
,2
]}

Maldonado, J. ^{[3
]}

Raddi, R. ^{[1
]}

Knowles, A. T. ^{[1
]}

Torres, S. ^{[1
,2
]}

Hoskin, M. ^{[4
]}

Cunningham, T. ^{[4
]}

Hollands, M. ^{[4
]}

Ren, J. ^{[5
]}

Gansicke, B. T. ^{[4
]}

Tremblay, P-E ^{[4
]}

Castro-Rodriguez, N. ^{[6
,7
,8
]}

Camisassa, M. ^{[1
,9
]}

Koester, D. ^{[10
]}

机构：

[1] Univ Politecn Cataluna, Dept Fis, C Esteve Terrades 5, E-08860 Castelldefels, Spain

[2] Inst Space Studies Catalonia, C Gran Capita 2-4,Edif Nexus 104, E-08034 Barcelona, Spain

[3] INAF Osservatorio Astron Palermo, Piazza Parlamento 1, I-90134 Palermo, Italy

[4] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[5] Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Space Astron & Technol, Beijing 100101, Peoples R China

[6] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Spain

[7] Univ La Laguna, Depart Astrofis, E-38206 Tenerife, Spain

[8] GRANTECAN, Cuesta San Jose S-N, E-38712 Brena Baja, La Palma, Spain

[9] Univ Colorado, Dept Appl Math, Boulder, CO 80309 USA

[10] Univ Kiel, Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2021年 / 505卷 / 03期

基金：

欧洲研究理事会; 欧盟地平线“2020”; 英国科学技术设施理事会;

关键词：

techniques: spectroscopic; stars: abundances; binaries: spectroscopic; stars: low-mass; white dwarfs; solar neighbourhood; COMMON-ENVELOPE BINARIES; DIGITAL-SKY-SURVEY; MILKY-WAY DISC; CHEMICAL EVOLUTION; STAR-FORMATION; PULSATIONAL PROPERTIES; LUMINOSITY FUNCTION; GALACTIC DISK; F-DWARF; SAMPLE;

D O I：

10.1093/mnras/stab1559

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：3165 / 3176

页数：12

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