Results 1 to 10 of about 53,348 (269)
Chaos and Elliptical Galaxies [PDF]
CELESTIAL MECHANICS AND DYNAMICAL ASTRONOMY, 1995 Recent results on chaos in triaxial galaxy models are reviewed. Central mass concentrations like those observed in early-type galaxies -- either stellar cusps, or massive black holes -- render most of the box orbits in a triaxial potential stochastic ...
CFF Karney +24 more
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Probing the Age of Elliptical Galaxies [PDF]
, 1996 In this paper we address the question whether age and metallicity effects can be disentangled with the aid of the broad-band colours and spectral indices from absorption feature strengths, so that the age of elliptical galaxies can be inferred. The observational data under examination are the indices Hbeta and [MgFe], and the velocity dispersion Sigma ...
A. Bressan, C. Chiosi, R. Tantalo
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The Relationship between Slope and Luminosity [PDF]
Kirkuk Journal of Science, 2010 In this study, a sample of galaxies has been adopted. It consists of 112 elliptical galaxies, among them were 56 dwarf elliptical galaxies, which belong to virgo cluster, 37 normal galaxies and 19 bright galaxies. Also, surface brightness profiles fitted
Mohsen H. Ali AL-Khafajy
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The colours of elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 13 pages, 8 figures, accepted by ...
Chang, Ruixiang +6 more
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Deviations of the Surface Brightness Distribution in Isolated Elliptical Galaxies [PDF]
مجلة التربية والعلم, 2012 In this paper, we present the surface brightness profiles of 48 isolated elliptical galaxies. we have adopted the r1/n – law to the observed surface brightness profiles of the adopted sample of isolated elliptical galaxies for the intermediate radial ...
Omar Salih
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The Astrophysical Journal, 2023 The mechanism by which galaxies stop forming stars and get rid of their interstellar medium (ISM) remains elusive. Here, we study a sample of more than 2000 elliptical galaxies in which dust emission has been detected.
Aleksandra Leśniewska +6 more
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Planetary Nebulae and the Ionization of the Interstellar Medium in Galaxies
Frontiers in Astronomy and Space Sciences, 2022 We discuss the role of planetary nebulae and their progeny in galaxy context in terms of ionization of the galaxy interstellar medium. This regards ionized gas outside the disk of spiral galaxies, the diffuse ionized medium in spiral galaxies, and the ...
Grażyna Stasińska +2 more
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Why there are no elliptical galaxies more flattened than E7: Thirty years later [PDF]
Serbian Astronomical Journal, 2006 Elliptical galaxies are modeled as homeoidally striated Jacobi ellipsoids (Caimmi and Marmo 2005) where the peculiar velocity distribution is anisotropic, or equivalently as their adjoint configurations i.e.
Caimmi R.
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Phenomenological approach to the modelling of elliptical galaxies: The problem of the mass-to-light ratio [PDF]
Serbian Astronomical Journal, 2007 In this paper the problem of the phenomenological modelling of elliptical galaxies using various available observational data is presented. Recently, Tortora, Cardona and Piedipalumbo (2007) suggested a double power law expression for the global ...
Samurović S.
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Galaxies, 2022 The observed Tully-Fisher and Faber-Jackson laws between the baryonic mass of galaxies and the velocity of motion of stars at the edge of galaxies are explained within the framework of the model of accretion of galaxies around supermassive black holes ...
Nick Gorkavyi
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