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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…