Multi-wavelength probes of distant lensed galaxies

Abstract

I summarise recent results on multi-wavelength properties of distant lensed galaxies, with a particular focus on Herschel. Submm surveys have already resulted in a breakthrough discovery of an extremely efficient selection technique for strong gravitational lenses. Benefitting from the gravitational magnification boost, blind mm-wave redshifts have been demonstrated on IRAM, SMA and GBT, and follow-up emission line detections have been made of water, [OIII], [CII] and other species, revealing the PDR/XDR/CRDR conditions. I also discuss HST imaging of submm lenses, lensed galaxy reconstruction, the prospects for ALMA and e-Merlin and the effects of differential magnification. Many emission line diagnostics are relatively unaffected by differential magnification, but SED-based estimates of bolometric fractions in lensed infrared galaxies are so unreliable as to be useless, unless a lens mass model is available to correct for differential amplification.

Invited review for IAU symposium 284, The Spectral Energy Distribution of Galaxies (eds. RJ Tuffs & CC Popescu). 7 pages, 3 figures. Original slides available at http://www.mpi-hd.mpg.de/sed2011/pages/program.php

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Cited by in corpus (2)

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• Effective Models for Statistical Studies of Galaxy-Scale Gravitational Lensing