NOAO >   Observing Info >   Approved Programs >   2013B-0522

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Proposal Information for 2013B-0522


PI: Andrew Baker, Rutgers, the State University of New Jersey, ajbaker@physics.rutgers.edu
Address: Department of Physics & Astronomy, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019, USA

CoI: Eric Gawiser, Rutgers, the State University of New Jersey
CoI: Sheila Kannapan, University of North Carolina
CoI: Kartik Sheth, NRAO
CoI: Sarah Blyth, University of Cape Town
CoI: Benne Holwerda, ESA
CoI: Matt Jarvis, University of Oxford
CoI: Natasha Maddox, University of Cape Town
CoI: Mattia Vaccari, University of the Western Cape
CoI: Asher Wasserman, Rutgers, the State University of New Jersey

Title: A Redshift Survey of the LADUMA Field

Abstract: Understanding the history of galaxy evolution depends critically on understanding the history of galaxies' neutral atomic gas. We are now poised to make a major breakthrough on this front, thanks to the approval at high priority of our 5000 hr deep H I survey using MeerKAT, the South African precursor to the Square Kilometre Array (SKA). The LADUMA (Looking At the Distant Universe with the MeerKAT Array) survey will probe the H I line, initially to z ~ 0.6 and eventually to z ~ 1.4, both in individually detected galaxies and in stacks at the precise positions and redshifts of optically selected samples. Here we propose an AAOmega redshift survey within the LADUMA field- encompassing but extending well beyond the Chandra Deep Field South- focused on bright source populations at z <=0.6. By facilitating stacking, the requested data will help address how the evolving H I content of galaxies relates to their halo and stellar masses, and to the gas mass in absorption-line systems. They will also be used to leverage deeper redshift surveys (probing to z ~ 1.4), as well as an ALMA CO snapshot survey that will enable studies of the baryonic Tully-Fisher and fundamental metallicity relations. In the spirit of previous CDF-S campaigns, we request no proprietary period and commit to making all redshift measurements public.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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