1.2k citations · 1.3k across the 8 of their papers we have counts for
9 papers
SALT spectroscopy of the HMXB associated with the LMC supernova remnant MCSNR\,J05136724
Vasilii Gvaramadze, Alexei Kniazev, Norberto Castro +1
We report the results of optical échelle spectroscopy with the Southern African Large Telescope (SALT) of the mass donor star BSDL\,923 in the neutron star (NS) high-mass X-ray bin…
Probing the History of the Galaxy Assembly of the Counter-rotating Disk Galaxy PGC 66551
Ivan Katkov, Damir Gasymov, Alexei Kniazev +4
Stellar counter-rotation in disk galaxies directly relates to the complex phenomenon of the disk mass assembly believed to be driven by external processes, such as accretion and me…
Star formation in outer rings of S0 galaxies. IV. NGC 254 -- a double-ringed S0 with gas counter-rotation
Ivan Katkov, Alexei Kniazev, Olga Sil'chenko +1
Although S0 galaxies are usually considered "red and dead", they often demonstrate star formation organized into ring structures. We aim to clarify the nature of this phenomenon an…
Searching for solar-like oscillations in pre-main sequence stars using APOLLO
M. Müllner, K. Zwintz, E. Corsaro +5
In recent years, our understanding of solar-like oscillations from main sequence to red giant stars has improved dramatically thanks to pristine data collected from space telescope…
Long-period eclipsing binaries: towards the true mass-luminosity relation. II. Absolute parameters of the NN Del system
Alexei Kniazev
We present results of our study of the long-period eclipsing binary star NN Delphini (hereafter NN Del). The results are based on spectral data obtained with the HRS echelle spectr…
Central stars of mid-infrared nebulae discovered with Spitzer and WISE
V. V. Gvaramadze, A. Y. Kniazev
Searches for compact mid-IR nebulae with the Spitzer Space Telescope and the Wide-field Infrared Survey Explorer (WISE), accompanied by spectroscopic observations of central stars…
Revealing evolved massive stars with Spitzer, WISE and SALT
A. Kniazev, V. Gvaramadze
We present the results of optical spectroscopic observations of 54 candidate evolved massive stars revealed through the detection of mid-infrared nebulae of various shapes surround…
Revealing evolved massive stars with Spitzer
V. V. Gvaramadze, A. Y. Kniazev, S. Fabrika
Massive evolved stars loss a large fraction of their mass via copious stellar wind or instant outbursts and during certain evolutionary phases they can be identified via the presen…
SEGUE: A Spectroscopic Survey of 240,000 stars with g=14-20
II SEGUE Collaboration, Brian Yanny, Constance Rockosi +2
The SEGUE survey obtained 240,000 moderate resolution (R = 1800) spectra from 3900 - 9000 Angstroms of fainter Milky Way stars (14.0 < g < 20.3) of a wide variety of spectral types…