Results 1 to 10 of about 233 (117)
Magnetic Fields and Halos in Spiral Galaxies [PDF]
Galaxies, 2019 Radio continuum and polarization observations reveal best the magnetic field structure and strength in nearby spiral galaxies. They show a similar magnetic field pattern, which is of spiral shape along the disk plane and X-shaped in the halo, sometimes accompanied by strong vertical fields above and below the central region of the disk. The strength of
Marita Krause
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Lensing by galaxy haloes in clusters of galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1997 17 pages, LaTeX file, MNRAS in ...
Natarajan, Priyamvada, Kneib, Jean-Paul
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Satellites and haloes of dwarf galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 We study the abundance of satellite galaxies as a function of primary stellar mass using the SDSS/DR7 spectroscopic catalogue. In contrast with previous studies, which focussed mainly on bright primaries, our central galaxies span a wide range of stellar mass, 10^7.5 < M_*^pri/M_sun < 10^11, from dwarfs to central cluster galaxies.
Sales, L.V. +3 more
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The Galaxy–Halo Connection in Low-mass Halos [PDF]
The Astrophysical Journal Letters, 2019 Abstract Properties of galaxies vary systematically with the mass of their parent dark matter halos. This basic galaxy–halo connection shows a fair amount of scatter whose origin is not fully understood. Here, we study how differences in the halo assembly history affect central galaxies in low-mass (M halo < 1012
Feldmann, Robert +2 more
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Microlensing and Halo Models of the Galaxy [PDF]
Publications of the Astronomical Society of Japan, 1996 We investigated the dependence of the optical depth (τ) of microlensing events on certain model parameters of the galactic halo. We only considered models in which the rotation curve inside the sun is compatible with the observation. It was found that τ varies up to a factor of 3.5 from those spherical models with a flat rotation curve.
Kan-ya, Yukitoshi +2 more
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The clustering of the first galaxy haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 MNRAS ...
Reed, Darren S. +4 more
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Dynamics of galaxies with triaxial haloes [PDF]
New Astronomy, 1998 We study the stability of trajectories near the disk plane of galaxy models with a triaxial dark matter halo component. We also examine the effect of weak discreteness noise, rapidly rotating bar perturbations and weak dissipation on these trajectories.
El-Zant, Amr, Hassler, Bjoern
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The halo distribution of 2dF galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 We use the clustering results obtained by Madgwick et al. (2003) for a sample of 96,791 2dF galaxies with redshift 0.01 \lt z \lt 0.15 to study the distribution of late-type and early-type galaxies within dark matter haloes of different mass. Within the framework of our models, galaxies of both classes are found to be as spatially concentrated as the ...
Magliocchetti, Manuela +1 more
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Are brightest halo galaxies central galaxies? [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 It is generally assumed that the central galaxy in a dark matter halo, that is, the galaxy with the lowest specific potential energy, is also the brightest halo galaxy (BHG), and that it resides at rest at the centre of the dark matter potential well. This central galaxy paradigm (CGP) is an essential assumption made in various fields of astronomical ...
Ramin A. Skibba +5 more
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On the distribution of haloes, galaxies and mass [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 The stochasticity in the distribution of dark haloes in the cosmic density field is reflected in the distribution function $P_V(N_h|δ_m)$ which gives the probability of finding $N_h$ haloes in a volume $V$ with mass density contrast $δ_m$. We study the properties of this function using high-resolution $N$-body simulations, and find that $P_V(N_n|δ_m ...
Casas-Miranda, R. +3 more
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