Results 181 to 190 of about 76,004 (221)
Reproducibility of PD patient-specific midbrain organoid data for <i>in vitro</i> disease modeling. [PDF]
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Recurrent Seyfert activity in spiral galaxy nuclei
Nature, 1981Hills1 has pointed out that in some conditions black holes in galactic nuclei would rapidly grow by disruption and accretion of stars thus producing Seyfert luminosities (>1043 erg s−1). In this hypothesis only those galactic nuclei with a high central stellar density are susceptible to Seyfert pathology, and they evolve through only one Seyfert phase.
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Astrophysics and Space Science, 1985
In this paper we discuss observational and theoretical arguments in favour of hypothesis on ‘nomad life’ of active nuclei inside and outside galaxies as well as its consequences. It may be the anisotropic collapse of a supermassive star, or the disruption of a supermassive binary system after the collapse of one companion that would give birth to such ...
O. K. Sil'chenko, V. M. Lipunov
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In this paper we discuss observational and theoretical arguments in favour of hypothesis on ‘nomad life’ of active nuclei inside and outside galaxies as well as its consequences. It may be the anisotropic collapse of a supermassive star, or the disruption of a supermassive binary system after the collapse of one companion that would give birth to such ...
O. K. Sil'chenko, V. M. Lipunov
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Publications of the Astronomical Society of the Pacific, 1965
613 SB(rs)bc fB-fS3 AN This note 1097 SB(s)b gBp HS 2 1365 SB(s)b fgB HS 2 1433 SB(r)a gB AN This note 1672 SB(s)b fB AN This note 1808 RSAB(s)a fS5p HS 2 2997 SAB(rs)c fSl HS This note 3351 SB(r)b fgBl HS 2 4051 SAB(rs)bc f?S3N AN This note 4151 SAB(rs)ab: gkS4pN AN This note 4321 SAB(s)bc fgSl HS 2 5236 SAB(s)c fgSl AN This note 5248 SAB(rs)bc fS4 HS
J. L. Sérsic, M. Pastoriza
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613 SB(rs)bc fB-fS3 AN This note 1097 SB(s)b gBp HS 2 1365 SB(s)b fgB HS 2 1433 SB(r)a gB AN This note 1672 SB(s)b fB AN This note 1808 RSAB(s)a fS5p HS 2 2997 SAB(rs)c fSl HS This note 3351 SB(r)b fgBl HS 2 4051 SAB(rs)bc f?S3N AN This note 4151 SAB(rs)ab: gkS4pN AN This note 4321 SAB(s)bc fgSl HS 2 5236 SAB(s)c fgSl AN This note 5248 SAB(rs)bc fS4 HS
J. L. Sérsic, M. Pastoriza
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Annual Review of Astronomy and Astrophysics, 1970
Galactic nuclei activity effect on galactic evolution and cosmology, discussing stellar and gaseous ...
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Galactic nuclei activity effect on galactic evolution and cosmology, discussing stellar and gaseous ...
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Astronomische Nachrichten, 1976
AbstractThe parameters of fifteen active nuclei are determined from spectroscopic and photometric observations. The values of bolometric luminosity, gas volume and mass, kinetic energy, characteristic dimension and kinematic time‐scale are given. The fluxes of radiative and mechanical energy of the gas envelope are compared. A steady‐state model of the
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AbstractThe parameters of fifteen active nuclei are determined from spectroscopic and photometric observations. The values of bolometric luminosity, gas volume and mass, kinetic energy, characteristic dimension and kinematic time‐scale are given. The fluxes of radiative and mechanical energy of the gas envelope are compared. A steady‐state model of the
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Publications of the Astronomical Society of the Pacific, 1986
The author reviews recent research on the environment in which active nuclei reside, namely the dense stellar populations found in the centers of elliptical galaxies and spiral bulges. He discusses new developments concerning the structure and dynamics of nuclei, recent results on the age and chemical composition of nuclear populations, the possibility
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The author reviews recent research on the environment in which active nuclei reside, namely the dense stellar populations found in the centers of elliptical galaxies and spiral bulges. He discusses new developments concerning the structure and dynamics of nuclei, recent results on the age and chemical composition of nuclear populations, the possibility
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