Search Publications
The Fundamental Parameters and Evolutionary Status of V454 Aurigae
Canbay, Remziye; Yucel, Gokhan; Bakis, Volkan
Eclipsing binary systems have a unique feature that enables scientists to obtain precise fundamental star parameters, which opens up a greater area of astrophysics studies. In this study, we derived the fundamental parameters, evolutionary status, and birthplace of V454 Aur in the Galaxy by combining radial velocity, photometric, and spectral ener…
SED Analysis of the Old Open Cluster NGC 188
Çınar, Deniz Cennet; Tasdemir, Seval; Koc, Seliz +1 more
In this study, we investigate the fundamental astrophysical parameters of the old open cluster NGC 188 using two complementary methods: isochron fitting and spectral energy distribution (SED) analysis. Using photometric, astrometric, and spectroscopic data from the {\it Gaia} Data Release 3 \citep[DR3,][]{Gaia_DR3}, we identified 868 most likely m…
Analysis of the Young Open Cluster Trumpler 2 Using Gaia DR3 Data
Yontan, Talar; Tasdemir, Seval
We present an investigation of the open cluster Trumpler 2 using Gaia DR3 photometric, astrometric and spectroscopic data. 92 stars were identified as likely members of the cluster, with membership probabilities greater than 0.5. The mean proper-motion components of the cluster are derived as ($\mu_{\alpha}\cos \delta$, $\mu_{\delta}$)=($1.494 \pm…
Comprehensive Analysis of the Open Cluster Collinder 74
Yontan, Talar; Canbay, Remziye
In this study, we have used the Gaia Third Data Release (Gaia DR3) to investigate an intermediate-age open cluster Collinder 74. We have identified 102 probable cluster members by considering stars with a membership probability exceeding 0.5 and located within the designated confinement radius. The mean proper-motion components of Collinder 74 are…
The Age-Metallicity Relation in the Solar Neighbourhood
Plevne, Olcay; Ak, Serap; Döner, Sibel +1 more
Age-metallicity relation for the Galactic disc is a crucial tool and is used to constrain the Galactic chemical evolution models. We investigated the age-metallicity relation of the Galactic disc using the red giant branch stars in the Solar neighbourhood. The data cover the Galactocentric radius of $7\leq R_{\rm gc} (\rm kpc) \leq9.5$, but extend…
An Updated Line List for Spectroscopic Investigation of G Stars- I: Redetermination of the Abundances in the Solar Photosphere
Sahin, Timur; Bilir, Selcuk; Marismak, Mahmut +1 more
We propose a line list that may be useful for the abundance analysis of G-type stars in the wavelength range 4080 -- 6780 Å. It is expected that the line list will be useful for surveys/libraries with overlapping spectral regions (e.g. ELODIE/SOPHIE libraries, UVES-580 setting of Gaia-ESO), and in particular for the analysis of F- and G-type stars…