Results 51 to 60 of about 470,379 (288)

A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks [PDF]

open access: yes, 2001
We present observational evidence for a galaxy `Type' dependence to the location of a spiral galaxy's disk parameters in the mu_0-log(h) (central disk surface-brightness - disk scale-length) plane.
Alister W. Graham   +8 more
core   +2 more sources

Barred Spiral Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1970
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.
openaire   +2 more sources

Molecular Clouds in Spiral Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1983
A large observational program investigating the 2.6 mm CO line in spiral galaxies is being conducted by myself and Nick Scoville using the 14 m telescope of the Five College Radio Astronomy Observatory (HPBW = 50″). Thus far we have observed 46 galaxies of types Sa, Sb, Sc and Irr, detected 31, and mapped 16.
Judith S. Young, Nick Z. Scoville
openaire   +3 more sources

NUMERICAL MODELLING OF GAS DYNAMIC STRUCTURES IN SPIRAL GALAXIES

open access: yesOdessa Astronomical Publications, 2013
Observations show that in the global morphology of spiral galaxies appear and form multi-scale features that are embedded in a complex complete picture of the galaxy.
A. Lugovskiy, E. Filistov
doaj   +1 more source

The Global Schmidt law in star forming galaxies [PDF]

open access: yes, 1997
Measurements of Hα, H I, and CO distributions in 61 normal spiral galaxies are combined with published far-infrared and CO observations of 36 infrared-selected starburst galaxies, in order to study the form of the global star formation law over the full ...
J. Kennicutt, J. Kennicutt
semanticscholar   +1 more source

Gravitational Lensing by Spiral Galaxies [PDF]

open access: yesThe Astrophysical Journal, 1998
27 pages, 7 postscript figures, submitted to ...
Charles R. Keeton   +1 more
openaire   +4 more sources

Mass of Spiral Galaxies by Means of a Maximum Disc Model

open access: yesUniversitas Scientiarum, 2018
Maximum disc mass models for a set of spiral galaxies from the Ursa Major Cluster are presented. We construct the models using the Hunther method and the particular solutions are chosen in such away that the circular velocities are adjusted very ...
Framsol López-Suspes   +1 more
doaj   +1 more source

MAGNETIC FIELDS IN A SAMPLE OF NEARBY SPIRAL GALAXIES [PDF]

open access: yes, 2014
Both observations and modeling of magnetic fields in the diffuse interstellar gas of spiral galaxies are well developed, but the theory has been confronted with observations for only a handful of individual galaxies.
Cameron Van Eck   +3 more
semanticscholar   +1 more source

The HI Halo of Spiral Galaxies

open access: yesAstrophysics and Space Science, 2004
The results of observational studies on the vertical HI density distribution and kinematics of the disks of spiral galaxies are reported and discussed. Attention is drawn to the presence of HI emission, unknown before and here referred to as the `beard', which has anomalous structure and kinematics, different from the known cold HI disk. This component
Gustaaf van Moorsel   +3 more
openaire   +6 more sources

Galactic Density and Evolution Based on the Virial Theorem, Energy Minimization, and Conservation of Angular Momentum

open access: yesGalaxies, 2018
Spiral galaxies are spinning, internally densified objects. The Virial Theorem explains galactic rotation curves via its linkage of the rotation rate to the gravitational self-potential (Ug) and the moment of inertia of oblate spheroids.
Robert E. Criss, Anne M. Hofmeister
doaj   +1 more source

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