| Title |
Chemodynamic properties of stars in solar neighbourhood |
| Translation of Title |
Chemodinaminės Saulės aplinkos žvaigždžių savybės. |
| Authors |
Sadikhli, Ravana |
| Full Text |
|
| Pages |
37 |
| Keywords [eng] |
Chemo-dynamical analysis, atmospheric parameters, high-resolution spectroscopy, chemical abundance, orbital parameters. |
| Abstract [eng] |
We present a chemo-dynamical study of 110 stars in the Solar neighbourhood based on high-resolution spectroscopy and orbital modelling. Stellar atmospheric parameters (Teff, log g, [Fe/H], and ξ) and alpha-element abundances were derived using standard spectroscopic methods. Radial velocities were determined via cross-correlation, and Galactic orbits were computed using the galpy package in an axisymmetric Milky Way potential. The sample spans metallicities in the range −0.44 ≤ [Fe/H] ≤ +0.03 dex and includes both dwarf and giant stars, predominantly associated with the Galactic thin disk. We find a negative vertical metallicity gradient of d[Fe/H]/dZmax = −0.095 ± 0.027 dex kpc⁻¹, while the radial gradient is weak and not statistically significant. The dispersion in metallicity at a given orbital parameter suggests the presence of both thin- and thick-disk populations and indicates that radial migration and population mixing play an important role in shaping the local chemo-dynamical structure of the Milky Way. |
| Dissertation Institution |
Vilniaus universitetas. |
| Type |
Master thesis |
| Language |
English |
| Publication date |
2026 |
