NOAO >   Observing Info >   Approved Programs >   2013A-0374

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Proposal Information for 2013A-0374


PI: Robert Bussmann, Harvard-Smithsonian Center for Astrophysics, rbussmann@cfa.harvard.edu
Address: 60 Garden Street, Cambridge, MA 02138, USA

CoI: Kristen Coppin, McGill University
CoI: Stephen Serjeant, Open University
CoI: Aprajita Verma, Oxford University
CoI: Joaquin Gonzalez-Nuevo, CSIC-UC
CoI: Mattia Negrello, INAF OAPD
CoI: Simon Dye, University of Nottingham
CoI: Rob Ivison, ROE
CoI: Dominik Riechers, Cornell University
CoI: Helmut Dannerbauer, IfA, Vienna
CoI: Michal Michalowski, ROE
CoI: Paul Van Der Werf, Leiden University
CoI: Malcolm Bremer, University of Bristol
CoI: Dave Clements, Imperial College London
CoI: Andrea Lapi, SISSA
CoI: Pasquale Temi, NASA Ames
CoI: Andrew Baker, Rutgers University
CoI: Alain Omont, IAP
CoI: Gianfranco De Zotti, INAF OAPD

Title: The H-ATLAS 1000 lens survey: a pilot study

Abstract: Strong gravitational lensing is one of the very few probes capable of mapping galactic dark matter distributions. Lensing provides independent cosmological parameter estimates and enables the study of galaxy populations that are otherwise too faint for detailed study. We pioneered a major new strong gravitational lens selection method via submm-wave surveys (Negrello et al. 2010 Science). When combined with near-IR surveys we can now generate the first ever 1000-lens survey. We request a pilot foreground lens redshift survey for 50 lenses. This pilot alone increases the number of confirmed submm-selected lens systems at z > 0.5 by x5, placing our new lensing discoveries on a par with SLACS (but at much higher lens redshifts), and distinguishing between NFW and SIS models of the foreground population. Combining this data with ongoing mm-wave source redshifts, we will constrain Omega_Lambda to around +/-0.01.


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NOAO >   Observing Info >   Approved Programs >   2013A-0374

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