6 papers
Stellar Population Astrophysics (SPA) with the TNG. CNO abundances in 28 open clusters
Bruno ÄurjuriÄ, Arnas Drazdauskas, Gražina TautvaiÅ¡ienÄ +4
Aims. Our main aim with this work was to enlarge the pool of open clusters with determined carbon, nitrogen, and oxygen abundances in evolved giants to further advance chemical clo…
Calibration of the [C/N] and [Y/Mg] chemical clocks with asteroseismic ages from the TESS space mission
E. PakÅ¡tienÄ, G. TautvaiÅ¡ienÄ, V. Bagdonas +8
Context. Stellar ages are typically very difficult to estimate for field stars. New empirical methods, based on abundance ratios of chemical elements, are emerging and need to be c…
Carbon and nitrogen as indicators of stellar evolution and age. A homogeneous sample of 44 open clusters from the Gaia-ESO Survey
G. TautvaiÅ¡ienÄ, A. Drazdauskas, Å . Mikolaitis +11
Context. Low- and intermediate-mass giants undergo a complex chemical evolution that has yet to be observationally probed. The influence of core helium flash on the chemical compos…
Chemical composition of planetary hosts: II. Abundances of neutron-capture elements
A. Sharma, E. StonkutÄ, A. Drazdauskas +4
We present a study of neutron-capture element abundances (Sr, Y, Zr, Ba, La, Ce, Nd, Pr, and Eu) in a large and homogeneous sample of 160 F-, G-, and K-type planet-host stars locat…
The Galactic inner spiral arms revealed by the Gaia ESO Survey chemical abundances. Metallicity and [Mg/Fe] ratios
C. Viscasillas Vázquez, L. Magrini, E. Spitoni +5
Recent observational advances, such as Gaia DR3 GSP-Spec, have highlighted the potential of chemical abundances in tracing and revealing the structure of spiral arms. Building on t…
Chemical composition of planetary hosts: C, N, and -element abundances
A. Sharma, E. StonkutÄ, A. Drazdauskas +4
Accurate atmospheric parameters and chemical composition of planet-hosting stars are crucial for characterising exoplanets and understanding their formation and evolution. Our obje…