53 citations · 151 across the 12 of their papers we have counts for
12 papers
A 70 pc-Diameter Nova Super-remnant Surrounding the Recurrent Nova RS Ophiuchi
Michael M. Shara, Kenneth M. Lanzetta, Alexandra Masegian +9
Recurrent novae undergo thermonuclear-powered eruptions separated by less than 100 years, enabled by subgiant or red giant donors transferring hydrogen-rich matter at very high rat…
Long-period double-lined eclipsing binaries: the system V454 Aur with the secondary eclipse caused by the occultation of the hotter component
Kniazev Alexei, Malkov Oleg, Gorda Stanislav +2
We present the results of our study of the long-period eclipsing binary star \Aur. The results are based on spectroscopic data obtained with the UFES échelle spectrograph and photo…
Stellar CoRGI in MaNGA: Stellar Counterrotating Galaxies Identified in the MaNGA Survey
Damir Gasymov, Ivan Yu. Katkov, Evgenii V. Rubtsov +8
Stellar counterrotating (CR) galaxies are systems hosting two large-scale stellar components rotating in opposite directions -- a main, preexisting galaxy body with an older stella…
Study of extragalactic HII regions with echelle spectroscopy: The A2 region in the irregular galaxy IC4662
Alexei Kniazev
I present the results of echelle spectroscopy of a bright HII region in the irregular galaxy IC4662 and their comparison with results from long-slit spectroscopy of the same region…
Spectral study of starforming rings in S0 galaxies of Dorado group -- NGC 1533 and NGC 1543
Irina S. Proshina, Olga K. Sil'chenko, Alexei Yu. Kniazev
We have fulfilled a detailed long-slit spectroscopic analysis for two SB0 galaxies -- NGC 1533 and NGC 1543, -- belonging to the Dorado group. Our spectral data reveal asymmetric d…
Introducing the Condor Array Telescope: IV. A possible nova super-remnant surrounding the putative recurrent nova KT Eridani
Michael M. Shara, Kenneth M. Lanzetta, James T. Garland +10
Just 10 recurrent novae (RNe) - which erupt repeatedly on timescales shorter than one century - are known in our Galaxy. The most extreme RN known (located in the Andromeda galaxy)…
Ionization and Star Formation in the Giant HII Region SMC-N66
E. Geist, J. S. Gallagher, R. Kotulla +8
The NGC 346 young stellar system and associated N66 giant HII region in the Small Magellanic Cloud are the nearest example of a massive star forming event in a low metallicity ($Z\…
Looking inside the nest: the hidden structure of the merger galaxy NGC 1316 (Fornax A)
Y. Beletsky, D. A. Gadotti, A. Moiseev +2
We present an analysis of the circumnuclear structure of NGC 1316 using both near-infrared imaging and stellar kinematics. 2D decomposition of the images suggests the presence of a…
Metallicities of galaxies in the nearby Lynx-Cancer void
A. Kniazev, S. Pustilnik, A. Tepliakova +1
Does the void environment have a sizable effect on the evolution of dwarf galaxies? If yes, the best probes should be the most fragile least massive dwarfs. We compiled a sample of…
New Wolf-Rayet star and its circumstellar nebula in Aquila
V. V. Gvaramadze, A. Y. Kniazev, W. -R. Hamann +3
We report the discovery of a new Wolf-Rayet star in Aquila via detection of its circumstellar nebula (reminiscent of ring nebulae associated with late WN stars) using the Spitzer S…
The KPNO International Spectroscopic Survey. II. H-alpha Selected Survey List 1
J. J. Salzer, C. Gronwall, V. A. Lipovetsky +7
The KPNO International Spectroscopic Survey (KISS) is a new objective-prism survey for extragalactic emission-line objects. It combines many of the features of previous slitless sp…
SBS 0335-052W - an Extremely Low Metallicity Dwarf Galaxy
V. A. Lipovetsky, F. H. Chaffee, Y. I. Izotov +3
We present Multiple Mirror Telescope (MMT) and Keck II telescope spectrophotometry and 3.5m Calar Alto telescope R, I photometry of the western component of the extremely low-metal…