Results 21 to 30 of about 80,653 (165)

On the scaling relations of disk galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2012
AbstractThe physical background of scaling laws of disk galaxies is reviewed. The match between analytically derived and observed scaling laws is briefly discussed. Accurate modeling of the fraction of baryons that end up populating a disk, and the conversion efficiency of those into stars, remains a challenging task for numerical simulations.
openaire   +2 more sources

Tidal Thickening of Galaxy Disks [PDF]

open access: yes, 1997
3 pages, including two PostScript figures, LaTeX (lamuphys.sty). To be published in the proceedings of the "Galaxy Scaling Relations: Origins, Evolution and Applications" Third ESO-VLT Workshop, November 18-20 ...
Reshetnikov, Vladimir, Combes, Francoise
openaire   +2 more sources

THE GROWTH OF THE DISK GALAXY UGC8802 [PDF]

open access: yesThe Astrophysical Journal, 2012
6 pages, 2 figures, accepted by ...
Chang, R. X., Shen, S. Y., Hou, J. L.
openaire   +2 more sources

Circumnuclear Keplerian Disks in Galaxies

open access: yesThe Astrophysical Journal, 1998
In this paper we demonstrate the possibility of inferring the presence of Keplerian gaseous disks using optical ground-based telescopes properly equipped. We have modeled the peculiar bidimensional shape of the emission lines in a sample of five S0-Sa galaxies as due to the motion of a gaseous disk rotating in the combined potential of a central point ...
BERTOLA, FRANCESCO   +5 more
openaire   +4 more sources

Supercomputer simulations of disk galaxies

open access: yesAstronomical & Astrophysical Transactions, 2001
The time evolution of models for an isolated disk of highly flattened galaxies of stars is investigated by direct integration of the Newtonian equations of motion of N=30,000 identical stars over a time span of many galactic rotations. Certain astronomical implications of the simulations to actual disk-shaped (i.e.
Griv, Evgeny   +4 more
openaire   +2 more sources

Dynamics of Starbursting Dwarf Galaxies. III. A HI study of 18 nearby objects [PDF]

open access: yes, 2014
We investigate the dynamics of starbursting dwarf galaxies, using both new and archival HI observations. We consider 18 nearby galaxies that have been resolved into single stars by HST observations, providing their star formation history and total ...
Fraternali, Filippo   +2 more
core   +2 more sources

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

open access: yesAdvanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah   +2 more
wiley   +1 more source

On the Significance of the Thick Disks of Disk Galaxies

open access: yesThe Astrophysical Journal Supplement Series
Abstract Thick disks are a prevalent feature observed in numerous disk galaxies, including our own Milky Way. Their significance has been reported to vary widely, ranging from a few percent to 100% of the disk mass, depending on the galaxy and the measurement method.
Sukyoung K. Yi   +10 more
openaire   +5 more sources

A catalog of edge-on disk galaxies [PDF]

open access: yesAstronomy & Astrophysics, 2005
16 pages, 10 figures, accepted by A& ...
Kautsch, Stefan   +3 more
openaire   +5 more sources

Relation Between the Thickness of Stellar Disks and the Relative Mass of Dark Halo in Galaxies [PDF]

open access: yes, 2002
We consider a thickness of stellar disks of late-type galaxies by analyzing the R and K_s band photometric profiles for two independent samples of edge-on galaxies.
A. V. Khoperskov   +37 more
core   +2 more sources

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