LADUMA: looking at the distant universe with the MeerKAT array

Sarah Louise Blyth, Andrew J. Baker, Benne W. Holwerda, Bruce A. Bassett, Matthew A. Bershady, Antoine Bouchard, Frank H. Briggs, Barbara Catinella, Laurent Chemin, Steven M. Crawford, Catherine M. Cress, Daniel Cunnama, Jeremy K. Darling, Romeel Davé, Roger P. Deane, W. J.G. de Blok, Ed C. Elson, Andreas Faltenbacher, Sean February, Ximena FernándezBradley S. Frank, Eric Gawiser, Patricia A. Henning, Kelley M. Hess, Ian Heywood, John P. Hughes, Matt J. Jarvis, Sheila J. Kannappan, Neal S. Katz, Dušan Kereš, Hans Rainer Klöckner, Renée C. Kraan-Korteweg, Philip Lah, Matthew D. Lehnert, Adam K. Leroy, Michelle Lochner, Natasha Maddox, Sphesihle Makhathini, Gerhardt R. Meurer, Martin J. Meyer, Kavilan Moodley, Raffaella Morganti, Danail Obreschkow, Se Heon Oh, Tom A. Oosterloo, D. J. Pisano, Attila Popping, Gergö Popping, Swara Ravindranath, Eva Schinnerer, Anja C. Schröder, Kartik Sheth, Rosalind Skelton, Oleg M. Smirnov, Mathew Smith, Rachel S. Somerville, Raghunathan Srianand, Lister Staveley-Smith, Ian M. Stewart, Mattia Vaccari, Petri Väisänen, Kurt J. van der Heyden, Wim van Driel, Marc A.W. Verheijen, Fabian Walter, Eric M. Wilcots, Theodore B. Williams, Patrick A. Woudt, John F. Wu, Martin A. Zwaan, Jonathan T.L. Zwart, Steve Rawlings

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Abstract

The cosmic evolution of galaxies’ neutral atomic gas content is a major science driver for the Square Kilometre Array (SKA), as well as for its South African (MeerKAT) and Australian (ASKAP) precursors. Among the H I large survey programs (LSPs) planned for ASKAP and MeerKAT, the deepest and narrowest tier of the “wedding cake” will be defined by the combined L-band+UHF-band Looking At the Distant Universe with the MeerKAT Array (LADUMA) survey, which will probe H I in emission within a single “cosmic vuvuzela” that extends to z = 1.4, when the universe was only a third of its present age. Through a combination of individual and stacked detections (the latter relying on extensive multi-wavelength studies of the survey’s target field), LADUMA will study the redshift evolution of the baryonic Tully–Fisher relation and the cosmic H I density, the variation of the H I mass function with redshift and environment, and the connection between H I content and galaxies’ stellar properties (mass, age, etc.). The survey will also build a sample of OH megamaser detections that can be used to trace the cosmic merger history. This proceedings contribution provides a brief introduction to the survey, its scientific aims, and its technical implementation, deferring a more complete discussion for a future article after the implications of a recent review of MeerKAT LSP project plans are fully worked out.

Original languageEnglish
JournalProceedings of Science
Publication statusPublished - 1 Jan 2016
Event2016 MeerKAT Science: On the Pathway to the SKA, MeerKAT 2016 - Stellenbosch, South Africa
Duration: 25 May 201627 May 2016

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