7 citations · 19 across the 6 of their papers we have counts for
6 papers
Distinct barium isotope ratios in CEMP-s and CEMP-rs stars
T. M. Sitnova, L. I. Mashonkina, A. M. Romanovskaya +2
We present a spectroscopic analysis of ten carbon enhanced metal-poor (CEMP) stars of type CEMP-s and CEMP-rs and determine their NLTE abundances of Ba and Eu, as well as the fract…
Unlocking the mystery of Sr synthesis in the early Galaxy through analysis of barium isotopes in very metal-poor stars
T. M. Sitnova, L. Lombardo, L. I. Mashonkina +8
We determine the contributions of the rapid (r) and slow (s) neutron capture processes to the Ba isotope mixture, along with Ba, Eu, and Sr NLTE abundances, in a sample of very met…
The Pristine survey: XXVII. The extremely metal-poor stream C-19 stretches over more than 100 degrees
Zhen Yuan, Tadafumi Matsuno, Tatyana Sitnova +14
The discovery of the most metal-poor stream, C-19, provides us with a fossil record of a stellar structure born very soon after the Big Bang. In this work, we search for new C-19 m…
Slowly Rotating Peculiar Star BD+001659 as a Benchmark for Stratification Studies in Ap/Bp Stars
A. Romanovskaya, T. Ryabchikova, Y. Pakhomov +2
We present the results of a self-consistent analysis of the magnetic silicon star BD+001659, based on its high-resolution spectra taken from the ESPaDOnS archive (R = 68,00…
HR-GO I: Comprehensive NLTE abundance analysis of the Cetus stream
T. M. Sitnova, Z. Yuan, T. Matsuno +8
Dwarf galaxy streams encode vast amounts of information essential to understanding early galaxy formation and nucleosynthesis channels. Due to the variation in the timescales of st…
The Pristine survey -- XXII. A serendipitous discovery of an extremely Li-rich very metal-poor giant and a new method of Li/Li isotope measurement
T. M. Sitnova, T. Matsuno, Z. Yuan +5
We report the serendipitous discovery of a very metal-poor (VMP) Li-rich giant star ( = 469080 K, log g = 1.340.13, [Fe/H] = 0.07). We analyse the…