Position-velocity diagrams of ionized gas in the inner regions of disk galaxies ?

@article{Funes2002PositionvelocityDO,
  title={Position-velocity diagrams of ionized gas in the inner regions of disk galaxies ?},
  author={J. G. S.J. Funes and Enrico Maria Corsini and Michele Cappellari and Alessandro Pizzella and Juan Carlos Vega Beltr{\'a}n and Claudia Scarlata and Francesco Bertola},
  journal={Astronomy and Astrophysics},
  year={2002},
  volume={388},
  pages={50-67}
}
We use long-slit spectroscopy along the major axis of a sample of 23 nearby disk galaxies to study the kinematic properties of the ionized-gas component in their inner regions. For each galaxy, we derive the position-velocity diagram of the ionized gas from its emission lines. We discuss the variety of shapes observed in such position-velocity diagrams by comparing the gas velocity gradient, velocity dispersion and integrated flux measured in the inner (r '1 00 ) and outer regions (r '4 00… Expand

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References

SHOWING 1-10 OF 49 REFERENCES
Pressure-supported Ionized Gas in S0 Galaxies*
Rotation curves and velocity dispersion profiles are presented for both the stellar and gaseous components of a sample of S0 galaxies. In all galaxies the central velocity dispersion of the ionizedExpand
Kinematic properties of gas and stars in 20 disc galaxies
Ionized gas and stellar kinematical parameters have been measured along the major axis of 20 nearby disc galaxies. We discuss the properties of each sample galaxy, distinguishing between thoseExpand
Stellar and Ionized Gas Kinematics in the Circumnuclear Region of the Galaxy NGC 7331
We present simultaneous two-dimensional spectroscopy of the circumnuclear region (12'' × 9'') of the galaxy NGC 7331, obtained with an optical fiber system coupled to the ISIS double spectrograph ofExpand
Circumnuclear Keplerian Disks in Galaxies
In this Letter, we demonstrate the possibility of inferring the presence of Keplerian gaseous disks using properly equipped optical ground-based telescopes. We have modeled the peculiar bidimensionalExpand
Supermassive Black Holes in Bulges
We present spatially extended gas kinematics at parsec-scale resolution for the nuclear regions of four nearby disk galaxies and model them as rotation of a gas disk in the joint potential of theExpand
The Bulge-Disk Orthogonal Decoupling in Galaxies: NGC 4698*
The R-band isophotal map of the Sa galaxy NGC 4698 shows that the inner region of the bulge structure is elongated perpendicularly to the major axis of the disk; this is also true for the outer partsExpand
Modelling gaseous and stellar kinematics in the disc galaxies NGC 772, 3898 and 7782
We present V band surface photometry and major-axis kinematics of stars and ionized gas of three early-type spiral galaxies, namely NGC 772, NGC 3898 and NGC 7782. For each galaxy we present aExpand
A search for dead quasars among nearby luminous galaxies. I: The stellar kinematics in the nuclei of NGC 2613, NGC 4699, NGC 5746, and NGC 7331
We present observations and analysis of the rotation velocities and velocity dispersions along the major and minor axes of the spiral galaxies NGC 2613, NGC 4699, NGC 5746, and NGC 7331. This workExpand
Nuclear-to-Disk Rotation Curves of Galaxies in the Ha and [N II] Emission Lines
We have obtained optical CCD spectroscopy along the major axes of 22 nearby spiral galaxies of Sb and Sc types in order to analyze their rotation curves. By subtracting the stellar continuumExpand
NGC 3521: Stellar Counter-Rotation Induced by a Bar Component
The spiral galaxy NGC 3521 exhibits apparently normal kinematic properties of gas and stars along its major axis. However, the analysis of the LOSVD reveals strong asymmetries. A decomposition of theExpand
...
1
2
3
4
5
...