The coalescence of invariant manifolds in barred-spiral galaxies

2008 ◽  
pp. 247-251
Author(s):  
P. Tsoutsis ◽  
C. Efthymiopoulos
Keyword(s):  
Invariant Manifolds ◽  
Spiral Galaxies ◽  
Barred Spiral Galaxies

scholarly journals Circumnuclear regions in barred spiral galaxies — I. Near-infrared imaging

2000 ◽  
Vol 317 (2) ◽  
pp. 234-248 ◽  
Author(s):  
D. Pérez-Ramírez ◽  
J. H. Knapen ◽  
R. F. Peletier ◽  
S. Laine ◽  
R. Doyon ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Imaging ◽  
Spiral Galaxies ◽  
Near Infrared Imaging ◽  
Barred Spiral Galaxies

HI in the Barred Spiral Galaxies NGC 1365 and NGC 1097

1983 ◽  
pp. 233-234 ◽  
Author(s):  
J. M. van der Hulst ◽  
M. P. Ondrechen ◽  
J. H. van Gorkom ◽  
E. Hummel
Keyword(s):  
Spiral Galaxies ◽  
Barred Spiral Galaxies ◽  
Ngc 1365

scholarly journals Infrared Emission from Barred Spiral Galaxies

1996 ◽  
Vol 157 ◽  
pp. 54-62
Author(s):  
Tim G. Hawarden ◽  
J. H. Huang ◽  
Q. S. Gu
Keyword(s):  
Star Formation ◽  
Spiral Galaxies ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Infrared Emission ◽  
Stellar Radiation ◽  
The Galaxy ◽  
Barred Spiral Galaxies ◽  
Star Formation Regions ◽  
Ir Emission

AbstractAmongst relatively undisturbed spiral galaxies of type ≤ Sc barred morphology is unquestionably associated with powerful mid- and Far-IR emission. On the other hand, even amongst early type galaxies, those with LFIR/LB < 1/3 exhibit no association of high relative FIR luminosity with barred morphology, but some association of IR colors resembling those of star formation regions (SFRs). Amongst systems with LFIR/LB < 0.1 this ratio may be anti-correlated with barredness. It appears that enhanced IR emission from those galaxies whose star formation rate is currently elevated by the the bar translates them into the group with higher FIR-to-optical luminosity ratios. Depletion of extended nearnuclear gas and dust, once the bar has swept up the currently-available supplies, may reduce the fraction of the background stellar radiation field which can be converted to FIR radiation in the inner, most luminous parts of the galaxy. Thus, after the starburst has subsided, such galaxies may be less FIR-luminous than unbarred systems. Several uncertainties remain: it is still not clear whether barred morphology is a necessary condition for the generation of a starburst in an otherwise undisturbed galaxy, while evidence as to the effect of differing bar strengths is conflicting.

scholarly journals The Dark Matter Content of Barred Spiral Galaxies

2004 ◽  
Vol 220 ◽  
pp. 277-278
Author(s):  
Glen Petitpas ◽  
Mousumi Das ◽  
Peter Teuben ◽  
Stuart Vogel
Keyword(s):  
Dark Matter ◽  
Spiral Galaxies ◽  
Velocity Fields ◽  
Matter Content ◽  
Two Dimensional ◽  
Disk Model ◽  
Barred Galaxies ◽  
Preliminary Results ◽  
Nearby Galaxies ◽  
Barred Spiral Galaxies

Two-dimensional velocity fields have been used to determine the dark matter properties of a sample of barred galaxies taken from the BIMA Survey of Nearby Galaxies (SONG). Preliminary results indicate that the maximal disk model is not appropriate in several galaxies in our sample, but higher resolution results will be needed to confirm this.

scholarly journals 3D chaotic diffusion in barred spiral galaxies

2013 ◽  
Vol 436 (2) ◽  
pp. 1201-1214 ◽  
Author(s):  
G. Contopoulos ◽  
M. Harsoula
Keyword(s):  
Spiral Galaxies ◽  
Chaotic Diffusion ◽  
Barred Spiral Galaxies

scholarly journals Dynamics of Ringed Barred Spiral Galaxies. I. Surface Photometry and Kinematics of NGC 1433 and NGC 6300

2001 ◽  
Vol 121 (1) ◽  
pp. 225-243 ◽  
Author(s):  
R. Buta ◽  
Stuart D. Ryder ◽  
Gregory J. Madsen ◽  
Karen Wesson ◽  
D. A. Crocker ◽  
...  
Keyword(s):  
Spiral Galaxies ◽  
Surface Photometry ◽  
Barred Spiral Galaxies

Motions in Barred Spiral Galaxies. II the Rotation of NGC 7479.

1960 ◽  
Vol 132 ◽  
pp. 654 ◽  
Author(s):  
E. Margaret Burbidge ◽  
G. R. Burbidge ◽  
K. H. Prendergast
Keyword(s):  
Spiral Galaxies ◽  
Barred Spiral Galaxies

scholarly journals Barred spiral galaxies

1970 ◽  
Vol 38 ◽  
pp. 351-355
Author(s):  
K. C. Freeman
Keyword(s):  
Spiral Galaxies ◽  
Spiral Structure ◽  
Theoretical Work ◽  
Barred Spiral Galaxies

We point out some properties of barred spiral galaxies which are important for the theory of their formation and spiral structure, and describe some theoretical work on the dynamics of these systems.

scholarly journals Observations of the Neutral Hydrogen in the Barred Spiral Galaxies NGC 3992 and NGC 4731

1983 ◽  
Vol 100 ◽  
pp. 235-236
Author(s):  
S. T. Gottesman ◽  
J. R. Ball ◽  
J. H. Hunter
Keyword(s):  
Radio Astronomy ◽  
Atomic Hydrogen ◽  
Spiral Galaxies ◽  
Neutral Hydrogen ◽  
Astronomy Observatory ◽  
Radio Astronomy Observatory ◽  
Barred Spiral Galaxies ◽  
Parameters Of Interest

We report observations of the atomic hydrogen properties of the barred spiral galaxies NGC 3992 and NGC 4731. These systems were observed in 1980 and 1981 with the VLA telescope of the National Radio Astronomy Observatory. In Table 1 we list the systemic parameters of interest.

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