DAzLE: The Dark Ages z (redshift) Lyman-alpha Explorer
Abstract
DAzLE is an near infrared narrowband differential imager being built by the Institute of Astronomy, Cambridge, in collaboration with the Anglo-Australian observatory. It is a special purpose instrument designed with a sole aim; the detection of redshifted Lyman-alpha emission from star forming galaxies at z>7. DAzLE will use pairs of high resolution (R=1000) narrowband filters to exploit low background `windows' in the near infrared sky emission spectrum. This will enable it to reach sensitivities of ~2E-21 W/m^2, thereby allowing the detection of z>7 galaxies with star formation rates as low as a few solar masses per year. The design of the instrument, and in particular the crucial narrowband filters, are presented. The predicted performance of DAzLE, including the sensitivity, volume coverage and expected number counts, is discussed. The current status of the DAzLE project, and its projected timeline, are also presented.
Cite
@article{arxiv.astro-ph/0409080,
title = {DAzLE: The Dark Ages z (redshift) Lyman-alpha Explorer},
author = {Anthony Horton and Ian Parry and Joss Bland-Hawthorn and Sonia Cianci and David King and Richard McMahon and Steve Medlen},
journal= {arXiv preprint arXiv:astro-ph/0409080},
year = {2011}
}
Comments
11 pages, 7 figures, to appear in Proceedings of SPIE Vol. 5492, Ground-based Instrumentation for Astronomy