From the 1 of 3 linked papers with an AI index.
3 papers
The non-LTE abundances of magnesium and yttrium and asteroseismic ages for the chemical clock calibration
Å . Mikolaitis, G. TautvaiÅ¡ienÄ, E. PakÅ¡tienÄ +11
The authors determine magnesium and yttrium abundances using non‑LTE spectral synthesis and combine these with asteroseismic and isochrone ages to study how the [Y/Mg]‑age relation…
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…