Kinematics and stellar disk modeling of lenticular galaxies

  title={Kinematics and stellar disk modeling of lenticular galaxies},
  author={Anatoly V. Zasov and Alexander V. Khoperskov and Ivan Yu. Katkov and Viktor L. Afanasiev and Serafim S. Kaisin},
  journal={Astrophysical Bulletin},
We present the results of spectroscopic observations of three S0-Sa galaxies: NGC 338, NGC 3245, and NGC 5440 at the SAO RAS 6-m BTA telescope. The radial distributions of the line-ofsight velocities and radial velocity dispersions of stars and ionized gas were obtained, and rotation curves of galaxies were computed. We construct the numerical dynamic N-body galaxy models with N ≥ 106 points. The models include three components: a “live” bulge, a collisionless disk, dynamically evolving to the… 
Kinematics and stellar population of the lenticular galaxy NGC 4124
Results of spectroscopic and photometric studies for the locally isolated lenticular galaxy NGC 4124 are presented. A model of the mass distribution consistent with photometric data has been
Reconstructing the velocity dispersion profiles from the line-of-sight kinematic data in disc galaxies
We present a modification of the method for reconstructing the stellar velocity ellipsoid (SVE) in disc galaxies. Our version does not need any parametrization of the velocity dispersion profiles and
Two-component gravitational instability in spiral galaxies
We applied a criterion of gravitational instability, valid for two-component and infinitesimally thin discs, to observational data along the major axis for 7 spiral galaxies of early types. Unlike
On the gravitational stability and mass estimation of stellar disks
We estimate the masses of disks of galaxies using the marginal gravitational stability criterion and compare them with the photometrical disk mass evaluations. The comparison reveals that the stellar
To be or not to be oblate: the shape of the dark matter halo in the polar ring galaxies
With the aim to determine the spatial distribution of the dark matter halo, we investigate two polar ring galaxies NGC 4262 and SPRC-7. For both galaxies the stellar kinematics data for the central
A universal relation between the properties of supermassive black holes, galaxies, and dark matter haloes
We study the relations between the mass of the central black hole (BH) MBH, the dark matter halo mass Mh, and the stellar-to-halo mass fraction f⋆∝M⋆/Mh in a sample of 55 nearby galaxies with
Dark matter in galaxies
Dark matter in galaxies, its abundance, and its distribution remain a subject of long-standing discussion, especially in view of the fact that neither dark matter particles nor dark matter bodies


Early-type disk galaxies: Structure and kinematics
Spectroscopic observations of three lenticular (S0) galaxies (NGC 1167, NGC 4150, and NGC 6340) and one SBa galaxy (NGC 2273) have been taken with the 6-m telescope of the Special Astrophysical
Gravitational stability and dynamical overheating of galactic stellar disks
Stellar velocity dispersion data at galactocentric distance of two disk radial scale lengths (R = 2h), available in the literature allowed us to determine the upper limits of disk local surface
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Available velocity dispersion estimates for the old stellar population of galactic disks at galactocentric distances r⋍2L (where L is the photometric radial scale length of the disk) are used to
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We investigate the manner in which lenticular galaxies are formed by studying their stellar kinematics: an S0 formed from a fading spiral galaxy should display similar cold outer disc kinematics to
Ages and abundances in large-scale stellar discs of nearby S0 galaxies†
By undertaking deep long-slit spectroscopy with the focal reducer SCORPIO of the Russian 6m telescope, we studied stellar population properties and their variation with radius in 15 nearby S0
Star formation history at the centers of lenticular galaxies with bars and purely exponential outer disks from SAURON data
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 from the SAURON
The mass distribution in early‐type disc galaxies: declining rotation curves and correlations with optical properties
We present rotation curves for 19 early-type disc galaxies (S0-Sab). The galaxies span a B-band absolute magnitude range from -17.5 to -22, but the majority have a high luminosity with M-B <-20.
The Westerbork HI survey of spiral and irregular galaxies III. HI observations of early-type disk galaxies
We present H observations of 68 early-type disk galaxies from the WHISP survey. They have morphological types between S0 and Sab and absolute B-band magnitudes between –14 and –22. These galaxies
The formation of S0 galaxies: evidence from globular clusters
Aims. We devise a simple experiment to test the theory that lenticular (S0) galaxies form from spirals whose star formation has been shut down. An individual galaxy’s fading is measured using the
The Tully-Fisher relations of early-type spiral and S0 galaxies
We demonstrate that the comparison of Tully-Fisher relations (TFRs) derived from global H I line widths to TFRs derived from the circular velocity profiles of dynamical models (or stellar kinematic