Journal article
WALLABY early science − V. ASKAP H I imaging of the Lyon Group of Galaxies 351
BQ For, L Staveley-Smith, T Westmeier, M Whiting, SH Oh, B Koribalski, J Wang, OI Wong, G Bekiaris, L Cortese, A Elagali, D Kleiner, K Lee-Waddell, JP Madrid, A Popping, J Rhee, TN Reynolds, JD Collier, CJ Phillips, MA Voronkov Show all
Monthly Notices of the Royal Astronomical Society | Published : 2019
Abstract
We present an H I study of the galaxy group LGG 351 using Widefield ASKAP L-band Legacy All-sky Blind Survey (WALLABY) early science data observed with the Australian Square Kilometre Array Pathfinder (ASKAP). LGG 351 resides behind the M 83 group at a velocity range (cz) of ∼3500–4800 km s−1 within the rich Hydra-Centaurus overdensity region. We detect 40 sources with the discovery of a tidally interacting galaxy pair and two new H I sources that are not presented in previous optical catalogues. 23 out of 40 sources have new redshifts derived from the new H I data. This study is the largest WALLABY sub-sample to date and also allows us to further validate the performance of ASKAP and the da..
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Grants
Awarded by National Aeronautics and Space Administration
Funding Acknowledgements
This research was supported by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (AS-TRO 3D), through project number CE170100013. The Australian SKA Pathfinder is part of the Australia Telescope National Facility that is funded by the Australian Government with support from the National Collaborative Research Infrastructure Strategy and Industry Endowment Fund. ASKAP uses the resources of the Pawsey Supercomputing Centre with funding provided by the Australian Government under the National Computational Merit Allocation Scheme (project JA3) We acknowledge the Wajarri Yamatji as the traditional owners of the Murchison Radio Observatory (MRO) site and thank the operational staff onsite. This research has made use of the NASA/IPAC Extragalactic Database (NED) that is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and SpaceAdministration. Thiswork is based in part on observations made with the Galaxy Evolution Explorer (GALEX). GALEX is aNASASmall Explorer, whosemissionwas developed in cooperation with the Centre National d'Etudes Spatiales (CNES) of France and theKorean Ministry of Science and Technology. GALEX is operated for NASA by the California Institute of Technology under NASA contract NAS5-98034. BQF thanks Mark Boulton for solving various computing issues and aiding data transfer and Steven Janowiecki for providing his data. LC is the recipient of an Australian Research Council Future Fellowship (FT180100066) funded by the Australian Government.