From the 1 of 8 linked papers with an AI index.
8 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…
Astrometric and Spectroscopic Analysis of IC 2714: An Open Cluster Hosting a Lithium-Rich Giant
T. Flaulhabe, N. Holanda, G. TautvaiÅ¡ienÄ +7
Open clusters serve as laboratories to study and evaluate stellar evolution and Galactic chemical evolution models. Chemical peculiarities, such as lithium-rich giants, are rarely…
Chromospherically active stars: Lithium and CNO abundances in northern RS CVn stars
B. Bale, G. Tautvaisiene, R. Minkeviciute +4
Aims: We carried out a detailed investigation of Lithium and CNO abundances, including carbon isotope ratios, in RS CVn stars to assess the role of magnetic activity in the mixing…
Chromospherically active stars: Chemical composition of photospheres in 20 RS CVn stars
B. Bale, G. Tautvaisiene, R. Minkeviciute +4
Context. Various element transport processes modify the photospheric chemical composition of low-mass stars during their evolution. The most prominent one is the first dredge-up th…
Metal-THINGS: The Milky Way twin candidate NGC 3521
L. S. Pilyugin, M. A. Lara-Lopez, G. Tautvaisiene +6
The 3D spectrophotometry measurements of the galaxy NGC~3521, a structural Milky Way analogue (sMWA), were carried out within the Metal-THINGS project. We found that the oxygen abu…
Central oxygen abundances in the spiral galaxies of the MaNGA survey: Galaxies with central starbursts
L. S. Pilyugin, G. Tautvaisiene
We examine whether there are deviations of the local central oxygen abundances in spiral galaxies from the general metallicity gradients. We compare the values of the central inter…