Results 11 to 20 of about 70 (70)
A Study of the Continua of the Nuclei of Galaxies [PDF]
Symposium - International Astronomical Union, 1972 Many people have attacked the problem of synthesizing the stellar population of the galaxies. We have performed such a synthesis, by using only the intensities of absorption lines in the nuclei of galaxies. It is then possible to obtain a synthesized continuous spectrum even if there are several possible solutions for the stellar composition, and the ...
D. Alloin, Y. Andrillat, S. Souffrin
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Activity in the Nuclei of Normal Galaxies [PDF]
Highlights of Astronomy, 1980 The principal motivation behind the work summarized below was to define the nature of a “typical” galactic nucleus and thereby determine whether such nuclei differ from active nuclei in a qualitative or only quantitative sense. I hoped that such a study would then yield clues as to the origin and duration of nuclear activity and the effects such ...
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Kinematics of Nuclei of Sc Galaxies [PDF]
Highlights of Astronomy, 1980 For a sample of 21 Sc galaxies with a wide range of luminosities, of radii, and of masses, W. K. Ford and I have obtained spectra and determined rotation curves. By their kinematical behavior in their central regions, the Sc’s can be separated into two groups. Some galaxies, generally small and of low luminosity, have shallow central velocity gradients,
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The Astrophysical Journal, 1992 The nucleus of a galaxy orbits around the mass centroid. Orbital motions appear overstable in numerical experiments started with a galaxy's nucleus at rest atop its mass centroid. The amplitude doubles in 6-10 orbital periods. Orbits precess, nutate, and change their amplitudes, but they keep fairly constant periods.
R. H. Miller, B. F. Smith
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The nuclei of bulge-less galaxies [PDF]
, 2004 Als Beitrag zur Vervollst?andigung unseres Wissens ?uber Galaxienzentren wurde die Zentral-Region sehr sp?ater (bulge-loser) Spiralgalaxien untersucht.
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Starbursts and active nuclei in galaxies [PDF]
, 2014 Starbursts und aktive galaktische Kerne (AGK) werden vorwiegend durch die Verschmelzung zweier Galaxien ausgelöst, aber auch in isolierten Galaxien, wie z. B. in unserer Milchstraße, können derartige Prozesse stattfinden. Daher gliedern wir diese Arbeit in zwei Teile: im ersten Teil untersuchen wir Starbursts und AGK, welche durch Galaxienkollisionen ...
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Stellar Populations in the Nuclei of Galaxies.
The Astrophysical Journal, 1961 openaire +1 more source
Optical Polarization in the Nuclei of Galaxies
The Astrophysical Journal, 1973 openaire +1 more source