Results 191 to 200 of about 80,743 (216)
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DENSITY WAVES IN DISK GALAXIES
Symposium - International Astronomical Union, 1967Density waves in the nature of those proposed by B. Lindblad are described by detailed mathematical analysis of collective modes in a disk-like stellar system. The treatment is centered around a hypothesis of quasi-stationary spiral structure. We examine (a) the mechanism for the maintenance of this spiral pattern, and (b) its consequences on the ...
C. C. Lin, F. H. Shu
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Counterrotating Galaxies and Accretion Disks
Annals of the New York Academy of Sciences, 1998ABSTRACT:Theoretical interest in astrophysical disks with counterrotating components of stars and/or gas has been stimulated by recently discovered counterrotating spiral and S0 galaxies. A variety of physical processes can occur in counterrotating disks.
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Galaxy disks and disk galaxies
2001This volume presents the proceedings of the conference "Galaxy Disks and Disk Galaxies", sponsored by the Vatican Observatory. The meeting was held in Rome from 12 to 16 June, 2000, the Jubilee Year, a special year for the Catholic Church. The venue of the meeting was the Pontifical Gregorian University, a descendant of the former Roman College where ...
FUNES J. G., CORSINI, ENRICO MARIA
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Stellar Disks in Early-Type Galaxies
1992Correlation between isophotal and physical parameters suggests that elliptical galaxies are divided into two main classes: the ‘boxy’ Es, which are likely the result of a strong environmental evolution (mergers), and the ‘disky’ Es, which represent the continuation of the SO sequence toward vanishing disk-to-bulge ratios.
CAPACCIOLI, MASSIMO, Caon, N.
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Dynamics of Disk Galaxies (Invited Review)
Astrophysics and Space Science, 1986In order to detect the gravitational effect of the dark corona component of disk galaxies, it is necessary to have surface photometry and rotation data that extend well beyond three disk-scale lengths. Such data exists now for several pure disk galaxies. There is very strong evidence for dark coronas in these galaxies.
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Stability of disk-like galaxies – Part II: The Kuzmin disk
Analysis, 2007SummaryWe prove the existence and nonlinear stability of the Kuzmin disk, a polytropic steady state of the Vlasov–Poisson system widely used in astrophysics, which has infinite support, but finite mass. As in Part I we use the variational approach by REIN and GUO.
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A population of red candidate massive galaxies ~600 Myr after the Big Bang
Nature, 2023Ivo Labbe +2 more
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Foundations of Black Hole Accretion Disk Theory
Living Reviews in Relativity, 2013P Chris Fragile
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