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The Peekaboo galaxy: new SALT spectroscopy and implications of archive HST data
Alexei Kniazev, Simon Pustilnik
The dwarf galaxy Peekaboo was recently identified as a Local Volume (LV) gas-rich and 'eXtremely Metal-Poor' (XMP) dIrr. Its gas metallicity is Z~Zsun/50, with +/-1 uncertainty…
Peculiarities of the chemical enrichment of metal-poor Stars in the Milky Way Galaxy
T. Mishenina, M. Pignatari, I. Usenko +5
The oldest stars in the Milky Way are metal-poor with [Fe/H] < -- 1.0, displaying peculiar elemental abundances compared to solar values. The relative variations in the chemical co…
Horizontal branch structure, age, and chemical composition for very metal-poor extragalactic globular clusters
M. E. Sharina, M. I. Maricheva, A. Y. Kniazev +2
This paper presents the results of analysing the integrated light (IL) low-resolution spectra of globular clusters (GCs) in the M31 and Centaurus A groups of galaxies. The sample c…
Stellar feedback impact on the ionized gas kinematics in the dwarf galaxy Sextans B
Ivan S. Gerasimov, Oleg . V. Egorov, Alexei V. Moiseev +3
We investigated the ionised and atomic gas kinematics and excitation state in the central region of ongoing star formation of the nearby low-metallicity dwarf galaxy Sextans B. The…