The Sizes of Galaxy Halos in Galaxy Cluster Abell 1689
نویسندگان
چکیده
منابع مشابه
Gravitational Lensing in Galaxy Cluster Abell 1689
Synopsis In this thesis we have set out to study the galaxy cluster Abell 1689 using strong grav-itational lensing. Due to its relative closeness at redshift 0.18 and available archived deep Hubble Space Telescope imaging it presents an ideal opportunity to several diverse studies based on strong gravitational lensing. We start with a brief introduction to cosmology and general relativity as we...
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Abell 1689 is a galaxy cluster at z = 0.183 where previous measurements of its mass using various techniques gave discrepant results. We present a new detailed measurement of the mass with the data based on X-ray observations with the European Photon Imaging Camera aboard the XMMNewton Observatory, determined by using an unparameterized deprojection technique. Fitting the total mass profile to ...
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متن کاملar X iv : a st ro - p h / 06 11 07 8 v 1 2 N ov 2 00 6 The sizes of galaxy halos in galaxy cluster Abell 1689
The multiple images observed in galaxy cluster Abell 1689 provide strong constraints not only on the mass distribution of the cluster but also on the ensemble properties of the cluster galaxies. Using parametric strong lensing models for the cluster, and by assuming well motivated scaling laws between the truncation radius s and the velocity dispersion σ of a cluster galaxy we are able to deriv...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2007
ISSN: 0004-637X,1538-4357
DOI: 10.1086/510555