Titlebook: Galaxy Scaling Relations: Origins, Evolution and Applications; Proceedings of the E Luiz Nicolaci Costa,Alvio Renzini Conference proceeding

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禍害隱伏

Dark Halo Scaling from Galaxy-Galaxy Lensingw of the mass distribution in galaxies implies the existence of a dark halo which extends far beyond the radius at which dynamical tracers can be observed. Gravitational lensing by galaxies offers the possibility to trace the halo profile to radii beyond ,~ 30.. kpc and may become the most sensitive

休戰(zhàn)

convulsion

Galaxy-Galaxy Lensing in the Hubble Deep Field: the Halo Tully-Fisher Relation at High Redshiftt luminosities of galaxies. We detect a lensing signal at the ~ 98% confidence level from only 468 galaxies. Preliminary results suggest that the lensing galaxies in the HDF at a typical redshift of ~ 1.2 follow a Tully-Fisher-like relation with dark matter halo circular velocities of 200 ± 50 km s.

圓錐體

Barter

Coma704

Bimodality of Freeman’s Lawal surface brightnesses is found to be bimodal. The bimodality is particularly significant at . because obscuration is not a problem and because the high surface brightness galaxies are redder than the low surface brightness galaxies so the bifurcation is greater. The bimodality signal is especially