Results 21 to 30 of about 1,066 (187)

Spiral galaxies in the SAURON survey [PDF]

open access: yesProceedings of the International Astronomical Union, 2007
AbstractWe discuss some recent integral field spectroscopy using the SAURON instrument of a sample consisting of 24 early-type spirals, part of the SAURON Survey, and 18 late-type spirals. Using 2-dimensional maps of their stellar radial velocity, velocity dispersion, and absorption line strength, it is now much easier to understand the nature of ...
Peletier, R   +12 more
openaire   +3 more sources

The profiles of bars in spiral galaxies

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We present an analysis of major-axis surface-brightness profiles of bars in a volume-limited sample of 182 barred spiral galaxies, using Spitzer 3.6 $\mu$m images. Unlike most previous studies, we use the entire bar profile, and we classify profiles into four categories.
Peter Erwin   +2 more
openaire   +3 more sources

Nuclear Spirals in Galaxies [PDF]

open access: yes, 2008
6 pages, 4 figures, to appear in ""Mapping the Galaxy and Nearby Galaxies", Eds. K. Wada and F.
openaire   +2 more sources

Gravitational Lensing by Spiral Galaxies [PDF]

open access: yesThe Astrophysical Journal, 1998
27 pages, 7 postscript figures, submitted to ...
Keeton, C. R., Kochanek, C. S.
openaire   +2 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

Kinematically lopsided spiral galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1999
6 pages, accepted for ...
Swaters, RA   +3 more
openaire   +3 more sources

The Origin and Evolution of Giant Radio Galaxies

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Giant radio galaxies are arguably the least understood of jetted active galactic nuclei (AGN). We propose that radio galaxies are the product of large mergers that do not involve radio galaxies or radio quasars, such as in merging spiral galaxies, while ...
David Garofalo
doaj   +1 more source

Spiral Galaxies

open access: yes, 2023
Our vision of galaxies has changed significantly since the era of large galaxy surveys like the Sloan, which gave us extensive statistics with millions of galaxies. The Hubble sequence classification described in Chapter 1 still remains very widely used but has been enriched with broad categories based on color that indicate the recent formation of ...
openaire   +3 more sources

THE OPACITY OF SPIRAL GALAXY DISKS [PDF]

open access: yes, 2007
The opacity of foreground spiral disks can be probed from the number of distant galaxies seen through them. To calibrate this number for effects other than the dust extinction, Gonzalez et al. (1998) developed the "Synthetic Field Method". A synthetic field is an extincted Hubble Deep Field added to the science field.
Holwerda, Benne W.   +3 more
openaire   +1 more source

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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