76 citations · 91 across the 6 of their papers we have counts for
7 papers
Using Molecular Lines to Determine Carbon and Nitrogen Abundances in the Atmospheres of Cool Stars
T. Ryabchikova, N. Piskunov, Y. Pakhomov
Simultaneous analysis of the C_2 and CN molecular bands in the 5100-5200 and 7930-8100A spectral regions is a promising alternative for the accurate determination of the carbon (C)…
Hyperfine Splitting in the VALD Database of Spectral-line Parameters
Yu. V. Pakhomov, T. A. Ryabchikova, N. E. Piskunov
The Vienna Atomic Line Database (VALD) has been supplemented with new data and new functionality -- the possibility of taking into account the effect of hyperfine splitting (HFS) o…
TYC 8606-2025-1: a mild barium star surrounded by the ejecta of a very late thermal pulse
V. V. Gvaramadze, Yu. V. Pakhomov, A. Y. Kniazev +4
We report the discovery of a spiral-like nebula with the Wide-field Infrared Survey Explorer (WISE) and the results of optical spectroscopy of its associated star TYC 8606-2025-1 w…
Contribution of type Ia supernovae to the chemical enrichment of the ultra-faint dwarf galaxy Bootes I
Yu. V. Pakhomov, L. I. Mashonkina, T. M. Sitnova +1
For three stars in the ultra-faint dwarf (UFD) galaxy Bootes I we have determined the atmospheric parameters, performed a new reduction of high-resolution spectra from the Subaru a…
Cool spots on the surface of the active giant PZ Mon
Yu. V. Pakhomov, V. I. Shenavrin, N. I. Bondar' +4
Based on the multiband (BVRIJHKL) photometric observations of the active red giant PZ Mon performed for the first time in the winter season of 2017-2018, we have determined the mai…
Spotted surface structure of the active giant PZ Mon
Yu. V. Pakhomov, K. A. Antonyuk, N. I. Bondar' +3
Based on our photometric observations in 2015-2016 and archival photometric data for the active red giant PZ Mon, we have found the main characteristics of the stellar surface: the…