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6 papers · 2 filters
The Gaia-ESO Survey: Abundance ratios in the inner-disk open clusters Trumpler 20, NGC 4815, NGC 6705
L. Magrini, S. Randich, D. Romano +50
Open clusters are key tools to study the spatial distribution of abundances in the disk and their evolution with time. Using the first release of stellar parameters and abundances…
The distance to the young cluster NGC 7129 and its age
V. Straizys, M. Maskoliunas, R. P. Boyle +6
The dust cloud TGU H645 P2 and embedded in it young open cluster NGC 7129 are investigated using the results of medium-band photometry of 159 stars in the Vilnius seven-colour syst…
The open cluster NGC 7142: interstellar extinction, distance and age
V. Straizys, M. Maskoliunas, R. P. Boyle +4
The results of medium-band photometry of 1037 stars in the area of old open cluster NGC 7142 down to V = 20.1 mag in the Vilnius seven-colour system are presented. Photometric resu…
Stellar substructures in the solar neighbourhood. II. Abundances of neutron-capture elements in the kinematic Group 3 of the Geneva-Copenhagen survey
Edita Stonkutė, Gražina Tautvaišienė, Birgitta Nordström +1
The evolution of chemical elements in a galaxy is linked to its star formation history. Variations in star formation history are imprinted in the relative abundances of chemical el…
Red clump stars of the Milky Way - laboratories of extra-mixing
G. Tautvaišienė, G. Barisevičius, Y. Chorniy +2
In this work we present the main atmospheric parameters, carbon, nitrogen and oxygen abundances, and 12C/13C ratios determined in a sample of 28 Galactic clump stars. Abundances of…
Deriving physical parameters of unresolved star clusters. I. Age, mass, and extinction degeneracies
Philippe de Meulenaer, Donatas Narbutis, Tadas Mineikis +1
Context. Stochasticity and physical parameter degeneracy problems complicate the derivation of the parameters (age, mass, and extinction) of unresolved star clusters when using bro…