6 papers
Unravelling Mass Transfer in Algols from Surface Abundances. I. Z Vulpeculae
Ahmet DerviÅoÄlu, Ahmet Dervişoğlu, Simge Adalalı +13
The photospheric abundance pattern of the components is a sensitive probe of mass and angular momentum transfer in Algols. With the aim to trace the evolutionary history and disclo…
Spectral Disentangling Reveals Deep CNO-cycle Exposure in ET Cru
Gökhan Yücel, Volkan BakıÅ, Christian Nitschelm +2
Binary stars undergoing mass transfer provide unique laboratories for testing stellar evolution. Here, we present a comprehensive photometric and spectroscopic analysis of the semi…
Decoding the RVb Enigma of DF Cyg: Pulsations, Circumstellar Disks, and Post-RGB Evolution Revealed by Multi-Wavelength Observations
Cenk Kayhan, Timur Åahin
This investigation integrates five decades of ground-based photometric data from the AAVSO, AFOEV, ASAS, ASAS-SN, and SuperWASP surveys with recently acquired TESS observations, co…
Stellar Ancestry Unlocked: Chemical and Orbital Clues Link Metal Poor Stars to Globular Clusters and the Galaxy's Thick Disk
Gizay Yolalan, Timur Åahin, Selçuk Bilir +1
This study presents a detailed chemical, kinematic, and orbital dynamic analysis of five metal poor stars in the solar neighborhood: HD 2665, HD 5916, HD 122956, HD 189349, and HD…
Tracing the Galactic Origins of Selected Four G-type Stars in the Solar Neighbourhood
Deniz Cennet Ãınar, Selçuk Bilir, Timur Åahin +1
We present a multi-method investigation of four metal-poor G-type main-sequence stars to resolve their Galactic origins. By combining high-resolution spectroscopy from PolarBase, p…
An Updated Line List for Spectroscopic Investigation of G Stars II: Refined Solar Abundances via Extended Wavelength Coverage to 10 000 Ã
T. Åahin, F. Güney, S. A. Åentürk +2
This study introduces a line list for the abundance analysis of F and G type stars across the 4080-9675 A wavelength range. A systematic search employing lower excitation potential…