Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Akdeniz Üniversitesi, Fen Fakültesi, Uzay Bilimleri Ve Teknolojileri, Türkiye
Tezin Onay Tarihi: 2025
Tezin Dili: Türkçe
Öğrenci: Sena Aleyna ŞENTÜRK
Danışman: Timur Şahin
Özet:
This thesis investigates the chemical compositions and evolutionary origins of two
G-type stars (HD 76151 and HD 115617) in the solar neighborhood using high-resolution
infrared spectroscopy. Analysis of optical (HARPS, ESPRESSO) and near-infrared
(IGRINS) spectra has determined detailed abundance distributions for α-elements (O,
Mg, Si, Ca, Ti), iron-group elements (Fe, Ni, Cr), and neutron-capture elements (Y, Zr),
while providing solar-comparative [X/Fe] ratios. Evolutionary analysis via the MCMC
method yields ages of 4.2 ± 0.7 billion years for HD 76151 and 8.1 ± 1.3 billion years for
HD 115617. Kinematic and orbital dynamics analyses integrated with Gaia data confirm
both stars originate from the Galactic thin disk, with birth radii of 6.1 ± 0.4 kpc and 7.3 ±
0.5 kpc, respectively. The novel atomic line list developed for the 1-2.5 µm wavelength
range serves as a foundational data resource for infrared spectroscopic analyses at the
Eastern Anatolia Observatory (DAG) under the national mission framework. Furthermore,
the first detailed chemical abundance analyses in the infrared region presented in this
study establish a methodological framework for understanding radial migration dynamics
of solar-type stars.