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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/58560
- The 'billion galaxy' cosmological HI Large Deep Survey (BiG-CHILDS)
- Myers, Steven T.; Abdalla, Filipe B.; Blake, Chris; Koopmans, Leon; Lazio, Joseph; Rawlings, Steve
- We outline the case for a comprehensive wide and deep survey ultimately targeted at obtaining 21-cm HI line emission spectroscopic observations of more than a billion galaxies to redshift z > 1.5 over half the sky. This survey provides a database of galaxy redshifts, HI gas masses, and galaxy rotation curves that would enable a wide range of science, including fundamental cosmology and studies of Dark Energy. This science requires the next generation of radio arrays, which are being designed under the umbrella of the 'Square Kilometer Array' (SKA) project. We present a science roadmap, extending to 2020 and beyond, that would enable this ambitious survey. We also place this survey in the context of other multi-wavelength surveys.
- Publication type
- White paper
- Research centre
- Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Astrophysics and Supercomputing
- Astro2010 Science White Papers
- Publication year
- Cosmology; Dark Energy; Galaxy redshifts; Galaxy rotations; HI gas masses; Spectroscopy; Surveys
- Board on Physics and Astronomy
- Publisher URL
- Copyright © 2009.