Research Article

Common Age and Initial Metallicity for the 16 Cyg Binary System

Volume: 7 September 10, 2026
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Common Age and Initial Metallicity for the 16 Cyg Binary System

Abstract

Solar-like oscillating binary systems provide powerful constraints on stellar evolution, as their components are expected to share the same initial chemical composition and age due to their common origin. Asteroseismology further allows these parameters to be determined with high precision. The 16 Cyg system, whose components are both solar analogues and show solar-like oscillations, represents an excellent laboratory in this context. In this study, we constructed stellar models of 16 Cyg A and B using the MESA evolutionary code under the spectroscopic and interferometric constraints. We found a common age of t ≈ 8.0 Gyr for an initial metallicity of Z0 = 0.0166. The masses of the components are MA = 1.000 M⊙ and MB = 0.971 M⊙. The models agree well with the interferometric radii, observed effective temperatures, and luminosities. The surface metallicities are Zs = 0.01390 and Zs = 0.01404 for 16 Cyg A and B, respectively, showing consistency with the expected effects of microscopic diffusion.

Keywords

Supporting Institution

This study was supported by the Scientific and Technological Research Council of Turkey (TÜBİTAK: 123F019).

Project Number

TÜBİTAK: 123F019

Ethical Statement

The authors declare that this study does not involve any ethical issues.

Thanks

This study was supported by the Scientific and Technological Research Council of Turkey (TÜBİTAK: 123F019).

References

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Details

Primary Language

English

Subjects

Astronomical Sciences (Other)

Journal Section

Research Article

Publication Date

September 10, 2026

Submission Date

May 17, 2026

Acceptance Date

August 7, 2026

Published in Issue

Year 2026 Volume: 7

APA
Demirkol, A., Yıldız, M., Örtel, S., & Çakır Alsaç, T. (2026). Common Age and Initial Metallicity for the 16 Cyg Binary System. Turkish Journal of Astronomy and Astrophysics, 7. https://doi.org/10.55064/tjaa.1952375
AMA
1.Demirkol A, Yıldız M, Örtel S, Çakır Alsaç T. Common Age and Initial Metallicity for the 16 Cyg Binary System. TJAA. 2026;7. doi:10.55064/tjaa.1952375
Chicago
Demirkol, Asya, Mutlu Yıldız, Sibel Örtel, and Tuğbanur Çakır Alsaç. 2026. “Common Age and Initial Metallicity for the 16 Cyg Binary System”. Turkish Journal of Astronomy and Astrophysics 7 (September). https://doi.org/10.55064/tjaa.1952375.
EndNote
Demirkol A, Yıldız M, Örtel S, Çakır Alsaç T (September 1, 2026) Common Age and Initial Metallicity for the 16 Cyg Binary System. Turkish Journal of Astronomy and Astrophysics 7
IEEE
[1]A. Demirkol, M. Yıldız, S. Örtel, and T. Çakır Alsaç, “Common Age and Initial Metallicity for the 16 Cyg Binary System”, TJAA, vol. 7, Sept. 2026, doi: 10.55064/tjaa.1952375.
ISNAD
Demirkol, Asya - Yıldız, Mutlu - Örtel, Sibel - Çakır Alsaç, Tuğbanur. “Common Age and Initial Metallicity for the 16 Cyg Binary System”. Turkish Journal of Astronomy and Astrophysics 7 (September 1, 2026). https://doi.org/10.55064/tjaa.1952375.
JAMA
1.Demirkol A, Yıldız M, Örtel S, Çakır Alsaç T. Common Age and Initial Metallicity for the 16 Cyg Binary System. TJAA. 2026;7. doi:10.55064/tjaa.1952375.
MLA
Demirkol, Asya, et al. “Common Age and Initial Metallicity for the 16 Cyg Binary System”. Turkish Journal of Astronomy and Astrophysics, vol. 7, Sept. 2026, doi:10.55064/tjaa.1952375.
Vancouver
1.Asya Demirkol, Mutlu Yıldız, Sibel Örtel, Tuğbanur Çakır Alsaç. Common Age and Initial Metallicity for the 16 Cyg Binary System. TJAA. 2026 Sep. 1;7. doi:10.55064/tjaa.1952375

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