scholarly journals Optical long slit velocities and a combined optical and H i  velocity field for the barred spiral galaxy NGC 1365

1996 ◽  
Vol 120 (3) ◽  
pp. 403-414 ◽  
Author(s):  
P. O. Lindblad ◽  
M. Hjelm ◽  
J. Högbom ◽  
S. Jörsäter ◽  
P. A.B. Lindblad ◽  
...  
Keyword(s):  
Velocity Field ◽  
Spiral Galaxy ◽  
Barred Spiral Galaxy ◽  
Ngc 1365

scholarly journals The HI in the Large Barred Spiral NGC 1365

1996 ◽  
Vol 157 ◽  
pp. 168-171 ◽  
Author(s):  
S. Jörsäter ◽  
G. A. van Moorsel
Keyword(s):  
High Resolution ◽  
Velocity Field ◽  
Spiral Galaxy ◽  
Rotation Curve ◽  
Spiral Arms ◽  
Barred Spiral Galaxy ◽  
Inner Parts ◽  
Ngc 1365

AbstractWe have made high resolution HI observations using the VLA1 of the barred spiral galaxy NGC 1365. This galaxy contains 15.2 × 109M⊙ of HI. The velocity field is strongly affected by the bar only in the inner parts. NGC 1365 has a warp and it has 4 well developed spiral arms and 2 rudimentary ones. NGC 1365 has an unusually dropping rotation curve.

The velocity field of the barred spiral galaxy NGC 5383

1978 ◽  
Vol 219 ◽  
pp. 31 ◽  
Author(s):  
C. J. Peterson ◽  
N. Thonnard ◽  
V. C. Rubin ◽  
W. K., Jr. Ford
Keyword(s):  
Velocity Field ◽  
Spiral Galaxy ◽  
Barred Spiral Galaxy

scholarly journals A Multiwavelength Study of the Barred Spiral Galaxy NGC 7479

1996 ◽  
Vol 157 ◽  
pp. 495-497
Author(s):  
S. Laine ◽  
S. T. Gottesman
Keyword(s):  
Black Hole ◽  
Velocity Field ◽  
Spiral Galaxy ◽  
Spiral Structure ◽  
Massive Black Hole ◽  
Barred Spiral Galaxy ◽  
The Asymmetry ◽  
Individual Galaxies

AbstractThe detailed investigation of the activity and dynamics in NGC 7479 confirms the importance of understanding individual galaxies. We have discovered an S-shaped emission structure in 21 cm continuum. This detection together with strong nuclear 10 μm and Hα emission may imply the existence of a central massive black hole. We also address the origin of the asymmetric spiral structure in NGC 7479. The lack of any visible companion and the unperturbed H I velocity field suggest that the asymmetry has an internal origin.

scholarly journals Study of the Gas Kinematics in the Center of the Barred Spiral Galaxy NGC 4258.

1996 ◽  
Vol 157 ◽  
pp. 164-167
Author(s):  
S. N. Dodonov
Keyword(s):  
Spiral Galaxy ◽  
Spatial Sampling ◽  
Kinematic Structure ◽  
Gas Kinematics ◽  
Barred Spiral Galaxy ◽  
Integral Field Spectrograph ◽  
Integral Field

AbstractIntegral Field Spectrograph observations of southeast (SE) gas outflow in the center (11×13 arcsec) of NGC 4258 with spatial sampling 0.6 and 1.2 arcsec were made with the 6-m Telescope. Reconstructed spatial and kinematic structure of the SE outflow from 20-30 pc to 200-220 pc are presented.

scholarly journals Hydrodynamical Simulations of the Barred Spiral Galaxy NGC 1365

1996 ◽  
Vol 157 ◽  
pp. 413-415
Author(s):  
P. A. B. Lindblad ◽  
P. O. Lindblad ◽  
E. Athanassoula
Keyword(s):  
Gravitational Field ◽  
Gas Dynamics ◽  
Rotation Curve ◽  
Barred Galaxies ◽  
Mosaic Image ◽  
Dynamical Parameters ◽  
Pattern Speed ◽  
Barred Spiral Galaxy ◽  
Hydrodynamical Simulations ◽  
Ngc 1365

Several authors have explored the field of gas dynamics in barred systems. One of the aims of these investigations was to compare the model gaseous response, due to some assumed underlying stellar gravitational field, with observed gas density distribution and kinematics of barred galaxies. The gas is known to respond in a highly non-linear way, and therefore should give clues to dynamical parameters like the mass distribution, positions and existence of principal resonances and thereby the pattern speed.High resolution HI data now exist for NGC 1365 (Jörsäter & van Moorsel 1995), and the kinematical HI data have been combined with optical long slit measurements to obtain the velocity field (Lindblad et al. 1995) used for extracting the rotation curve, representing the axisymmetric forces in NGC 1365, and for comparisons with models. A mosaic image of NGC 1365 in the J-band was used to compute the perturbing potential used in the models.

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