Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Boily, C. M."'
Autor:
Kroupa, P., Famaey, B., de Boer, K. S., Dabringhausen, J., Pawlowski, M. S., Boily, C. M., Jerjen, H., Forbes, D., Hensler, G., Metz, M.
(abridged) Predictions of the Concordance Cosmological Model (CCM) of the structures in the environment of large spiral galaxies are compared with observed properties of Local Group galaxies. Five new most probably irreconcilable problems are uncover
Externí odkaz:
http://arxiv.org/abs/1006.1647
Physics lectures always refer to the tides as a disruptive effect. However, tides can also be compressive. When the potential of two galaxies overlap, as happens during a merger, fully compressive tides can develop and have a strong impact on the dyn
Externí odkaz:
http://arxiv.org/abs/0908.2599
Publikováno v:
MNRAS 391 (2008) L98
Gravitational tides are widely understood to strip and destroy galactic substructures. In the course of a galaxy merger, however, transient totally compressive tides may develop and prevent star forming regions from dissolving, after they condensed t
Externí odkaz:
http://arxiv.org/abs/0809.2927
We implement an efficient method to quantify time-dependent orbital complexity in gravitational $N$-body simulations. The technique, which we name DWaTIM, is based on a discrete wavelet transform of velocity orbital time series. The wavelet power-spe
Externí odkaz:
http://arxiv.org/abs/0801.4933
The motion of a black hole about the centre of gravity of its host galaxy induces a strong response from the surrounding stellar population. We treat the case of a harmonic potential analytically and show that half of the stars on circular orbits in
Externí odkaz:
http://arxiv.org/abs/0705.2756
Publikováno v:
Astrophys.J.614:26,2004
We study the survival of substructures (clumps) within larger self-gravitating dark matter halos. Building on scaling relations obtained from N-body calculations of violent relaxation, we argue that the tidal field of galaxies and halos can only dest
Externí odkaz:
http://arxiv.org/abs/0705.2556
Autor:
Boily, C. M., Athanassoula, E.
Publikováno v:
Mon.Not.Roy.Astron.Soc.369:608,2006
We present a purely theoretical study of the morphological evolution of self-gravitating systems formed through the dissipationless collapse of N-point sources. We explore the effects of resolution in mass and length on the growth of triaxial structu
Externí odkaz:
http://arxiv.org/abs/0705.2552
Publikováno v:
Mon.Not.Roy.Astron.Soc.369:1392-1406,2006
The mass of unresolved young star clusters derived from spectro-photometric data may well be off by a factor of 2 or more once the migration of massive stars driven by mass segregation is accounted for. We quantify this effect for a large set of clus
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604194
Publikováno v:
ApJ 2005, 620, 27
We point out a strong time-evolution of the mass-to-light conversion factor \eta commonly used to estimate masses of dense star clusters from observed cluster radii and stellar velocity dispersions. We use a gas-dynamical model coupled with the Cambr
Externí odkaz:
http://arxiv.org/abs/astro-ph/0502530
Autor:
Boily, C. M., Kroupa, P.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 338 (2003) 673
We subject to an N-body numerical investigation our analysis of Paper I on the survival of stellar clusters undergoing rapid mass loss. We compare analytical tracks of bound mass-fraction {\it vs} star formation efficiency $\epsilon$ to those obtaine
Externí odkaz:
http://arxiv.org/abs/astro-ph/0211026