Galaxy masses
نویسندگان
چکیده
منابع مشابه
Gravitationaìconvergence' and Galaxy Cluster Masses
Two colour photometry of the cluster A1689 reveals a `relative magniication-bias' between lensed blue and red background galaxies, arising from a dependence of the faint galaxy count-slope on colour. The colour distribution is skewed blueward of the far eld, allowing us to measure the cluster magniication and to understand the notorious blueness of large arcs. We show that the magniication info...
متن کاملEarly-type Halo Masses from Galaxy-galaxy Lensing
We present measurements of the extended dark halo profiles of bright early-type galaxies at redshifts 0.1 < z < 0.9 obtained via galaxy-galaxy lensing analysis of images taken at the CFHT using the UH8K CCD mosaic camera. Six 0.5 × 0.5 degree fields were observed for a total of 2 hours each in I and V , resulting in catalogs containing ∼ 20000 galaxies per field. We used V−I color and I magnitu...
متن کاملGalaxy Halo Masses from Weak Gravitational Lensing
In this review, I discuss the use of galaxy-galaxy weak lensing measurements to study the masses of dark matter halos in which galaxies reside. After summarizing how weak gravitational lensing measurements can be interpreted in terms of halo mass, I review measurements that were used to derive the relationship between optical galaxy mass tracers, such as stellar mass or luminosity, and dark mat...
متن کاملGALAXY HALO MASSES FROM INTERNAL KINEMATICS Romanowsky
The halo masses of nearby individual elliptical galaxies can be estimated by using the kinematics of their stars, planetary neb-ulae, and globular clusters—ideally in combination. With currently improving coverage of galaxies of ordinary luminosities and morphologies , systematic trends may be identified. Bright, boxy ellipticals show strong signatures of dark matter, while faint, disky ones ty...
متن کاملElliptical Galaxy Halo Masses from Internal Kinematics
The halo masses of nearby individual elliptical galaxies can be estimated by using the kinematics of their stars, planetary neb-ulae, and globular clusters—ideally in combination. With currently improving coverage of galaxies of ordinary luminosities and morphologies , systematic trends may be identified. Bright, boxy ellipticals show strong signatures of dark matter, while faint, disky ones ty...
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ژورنال
عنوان ژورنال: Reviews of Modern Physics
سال: 2014
ISSN: 0034-6861,1539-0756
DOI: 10.1103/revmodphys.86.47