33 citations · 170 across the 22 of their papers we have counts for
22 papers
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…
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…
Kinematics and Origin of Gas in the Disk Galaxy NGC 2655
Olga K. Sil'chenko, Alexei V. Moiseev, Alexandre S. Gusev +1
The new observational data concerning distribution, excitation, and kinematics of the ionized gas in the giant early-type disk galaxy NGC 2655 obtained at the 6m telescope of the S…
Star Formation in Outer Rings of S0 galaxies. V. UGC 4599 -- an S0 with gas probably accreted from a filament
O. Sil'chenko, A. Moiseev, D. Oparin +2
Though S0 galaxies are usually thought to be `red and dead', they often demonstrate weak star formation organised in ring structures and located in their outer disks. We try to cla…
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…
Observations of lenticular galaxies at the 6m telescope of the Special Astrophysical Observatory
Olga K. Sil'chenko
This is a historical review covering the last 30 years of the observational study of lenticular galaxies at the 6m telescope BTA of the Special Astrophysical Observatory of the Rus…
Tilted outer and inner structures in edge-on galaxies?
Aleksandr V. Mosenkov, Anton A. Smirnov, Olga K. Sil'chenko +3
Tilted and warped discs inside tilted dark matter haloes are predicted from numerical and semi-analytical studies. In this paper, we use deep imaging to demonstrate the likely exis…
Star formation in outer rings of S0 galaxies. II. NGC 4513 -- a multi-spin ringed S0 galaxy
I. Proshina, O. Sil'chenko, A. Moiseev
Though S0 galaxies are usually thought to be `red and dead', they demonstrate often star formation organized in ring structures. We try to clarify the nature of this phenomenon and…
Star formation in outer rings of S0 galaxies. I. NGC 6534 and MCG 11-22-015
O. Sil'chenko, I. Kostiuk, A. Burenkov +1
Though S0 galaxies are usually thought to be `red and dead', they often demonstrate star formation organized in ring structures. We try to clarify the nature of this phenomenon and…
Noncircular Outer Disks in Unbarred S0 Galaxies: NGC 502 and NGC 5485
Olga K. Sil'chenko
Strongly noncircular outer stellar disks have been found in two unbarred SA0 galaxies by analyzing spectroscopic data on the rotation of stars and photometric data on the shape and…
Magnetic fields in ring galaxies
D. Moss, E. Mikhailov, O. Silchenko +3
Many galaxies contain magnetic fields supported by galactic dynamo action. However, nothing definitive is known about magnetic fields in ring galaxies. Here we investigate large-sc…
Current Star Formation in the Outer Rings among Early-Type Disk Galaxies
I. P. Kostiuk, O. K. Sil'chenko
By using the ARRAKIS, the atlas of stellar rings in galaxies (Comeron et al. 2014) based on data of the S4G survey, we have compiled a list of early-type, S0-Sb, disk galaxies with…
Thickness of Stellar Disks in Early-type Galaxies
Ekaterina M. Chudakova, Olga K. Sil'chenko
We suggest and verify a new photometric method enabling derivation of relative thickness of a galactic disk from two-dimensional surface-brightness distribution of the galaxy in th…
Properties of Stellar Populations in Isolated Lenticular Galaxies
Ivan Katkov, Olga Sil'chenko, Victor Afanasiev
In this paper we present the results of long-slit spectral observations for a sample of isolated lenticular galaxies, made with the SCORPIO and SCORPIO-2 spectrographs of the 6-met…
Lenticular galaxies with UV-rings
Marina A. Ilyina, Olga K. Sil'chenko
By using the public UV imaging data obtained by the GALEX (Galaxy Ultraviolet Explorer) for nearby galaxies, we have compiled a list of lenticular galaxies possessing ultraviolet r…
Star Formation History at the Centers of Lenticular Galaxies with Bars and Purely Exponential Outer Disks from SAURON Data
Olga K. Sil'chenko, Igor V. Chilingarian
We have investigated the stellar population properties in the central regions of a sample of lenticular galaxies with bars and single-exponential outer stellar disks using the data…
Star Formation History in the Central Region of the Barred Galaxy NGC 7177
Olga K. Sil'chenko, Aleksandrina A. Smirnova
Using the method of integral-field (3D) spectroscopy, we have investigated the kinematics and distribution of the gas and stars at the center of the early-type spiral galaxy with a…
NGC 4245: one or two bars, and where does the gas inflow stop?
O. K. Sil'chenko, I. V. Chilingarian, V. L. Afanasiev
We have studied stellar and gaseous kinematics as well as stellar population properties in the center of the early-type barred galaxy NGC 4245 by means of integral-field spectrosco…
Structure of the Galaxies in the NGC 80 Group
Marina A. Startseva, Olga K. Sil'chenko, Alexei V. Moiseev
BV-bands photometric data obtained at the 6-m telescope of the Special Astrophysical Observatory are used to analyze the structure of 13 large disk galaxies in the NGC 80 group. Ni…
Giant Cyclones in Gaseous Discs of Spiral Galaxies
A. M. Fridman, O. V. Khoruzhii, E. V. Polyachenko +5
We report detection of giant cyclonic vortices in the gaseous disc of the spiral galaxy NGC 3631 in the reference frame rotating with the spiral pattern. A presence of such structu…
NGC 7331: the Galaxy with the Multicomponent Central Region
Olga K. Sil'chenko
We present the results of the spectral investigation of the regular Sb galaxy NGC 7331 with the Multi-Pupil Field Spectrograph of the 6m telescope. The absorption-line indices H-be…
The Peculiar Rotation Curve of NGC 157
S. D. Ryder, A. V. Zasov, V. McIntyre +2
We present the results of a new HI, optical, and H-alpha interferometric study of the nearby spiral galaxy NGC 157. Our combined C- and D-array observations with the VLA show a lar…