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The Structure of High Redshift Galactic Halos

Published online by Cambridge University Press:  26 May 2016

Sara L. Ellison
Affiliation:
P. Universidad Catolica de Chile, Casilla 306, Santiago 22, Chile; European Southern Observatory, Casilla 19001, Santiago 19, Chile; University of Victoria, 3800 Finnerty Rd., Victoria, BC, V8P 1A1, Canada
Rodrigo Ibata
Affiliation:
Observatoire de Strasbourg, 11, rue de l'Université, F-67000, Strasbourg, France
Max Pettini
Affiliation:
Institute of Astronomy, Madingley Rd, Cambridge, CB3 0HA, U.K.
Geraint F. Lewis
Affiliation:
Institute of Astronomy, School of Physics, A 29, University of Sydney, NSW 2006, Australia
Bastien Aracil
Affiliation:
Institut d'Astrophysique de Paris - CNRS, 98bis Boulevard Arago, F-75014 Paris, France
Patrick Petitjean
Affiliation:
Institut d'Astrophysique de Paris - CNRS, 98bis Boulevard Arago, F-75014 Paris, France
R. Srianand
Affiliation:
IUCAA, Post Bag 4, Ganeshkhind, Pune 411 007, India

Abstract

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Observations of multiple or lensed QSOs at high redshift can be used to probe transverse structure in intervening absorption systems. Here we present results obtained from STIS spectroscopy of the unique triply imaged QSO APM 08279+5255 at zem = 3.9 and study the coherence scales of intervening low and high ionization absorbers.

Type
Part 2. Origin
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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