Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Heller, C. H."'
Publikováno v:
Mon.Not.Roy.Astron.Soc.347:22,2004
We study the regeneration of stellar bars triggered by a tidal interaction, using numerical simulations of either purely stellar or stellar+gas disc galaxies. We find that interactions which are sufficiently strong to regenerate the bar in the purely
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309664
Publikováno v:
Mon.Not.Roy.Astron.Soc. 341 (2003) 343
We investigate the dynamical effects of an interaction between an initially barred galaxy and a small spherical companion using an N-body/SPH algorithm. In the models described here the small companion passes through the disc of the larger galaxy nea
Externí odkaz:
http://arxiv.org/abs/astro-ph/0301300
Two continuum subtracted H-alpha HST frames of M101 are used to determine the positions, angular sizes and absolute fluxes of 237 HII regions using a semi-automated technique. From these we have constructed the luminosity and diameter distribution fu
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010565
We present high angular and velocity resolution two-dimensional kinematic observations in the spectral lines of H alpha and CO J=1-0 of the circumnuclear starburst region in the barred spiral galaxy M100, and compare them with kinematics derived from
Externí odkaz:
http://arxiv.org/abs/astro-ph/9909007
Publikováno v:
Astrophys.Space Sci. 276 (2001) 699-706
Using an N-body+SPH code we have performed numerical simulations to investigate the dynamical effects of an interaction between an initially barred galaxy and a small spherical companion. In the models described here the small companion passes throug
Externí odkaz:
http://arxiv.org/abs/astro-ph/9904138
Autor:
Heller, C. H.
The evolution in shape of an isolated density enhancement in the early universe is studied through numerical simulations. The formation scenarios of a cold dissipationless collapse and that of a slow accumulation of gas in a dark matter halo are exam
Externí odkaz:
http://arxiv.org/abs/astro-ph/9903477
We carry out a detailed orbit analysis of gravitational potentials selected at different times from an evolving self-consistent model galaxy consisting of a two-component disk (stars+gas) and a live halo. The results are compared with a pure stellar
Externí odkaz:
http://arxiv.org/abs/astro-ph/9806138
Autor:
Heller, C. H., Shlosman, I.
We investigate the dynamical response of stellar orbits in a rotating barred galaxy potential to the perturbation by a nuclear gaseous ring. The change in 3D periodic orbit families is examined as the gas accumulates between the inner Lindblad resona
Externí odkaz:
http://arxiv.org/abs/astro-ph/9605120
High-resolution NIR and optical images are used to constrain a dynamical model of the circumnuclear star forming (SF) region in the barred galaxy M100 (=NGC 4321). Subarcsecond resolution allowed us to distinguish important morphological details whic
Externí odkaz:
http://arxiv.org/abs/astro-ph/9509153
Autor:
Heller, C. H., Shlosman, I.
We investigate the dynamical response of stellar orbits in a rotating barred galaxy potential to the perturbation by a nuclear gaseous ring. The change in 3D periodic orbit families is examined as the gas accumulates near the inner Lindblad resonance
Externí odkaz:
http://arxiv.org/abs/astro-ph/9508151