Journal article
WALLABY pilot survey: First look at the Hydra i cluster and ram pressure stripping of ESO 501-G075
TN Reynolds, T Westmeier, A Elagali, B Catinella, L Cortese, N Deg, BQ For, P Kamphuis, D Kleiner, BS Koribalski, K Lee-Waddell, SH Oh, J Rhee, P Serra, K Spekkens, L Staveley-Smith, ARH Stevens, EN Taylor, J Wang, OI Wong
Monthly Notices of the Royal Astronomical Society | Published : 2021
Abstract
We present results from neutral atomic hydrogen (H i) observations of Hydra I, the first cluster observed by the Widefield ASKAP L-band Legacy All-sky Blind Survey (WALLABY) on the Australian Square Kilometre Array Pathfinder. For the first time, we show that WALLABY can reach its final survey sensitivity. Leveraging the sensitivity, spatial resolution, and wide field of view of WALLABY, we identify a galaxy, ESO 501-G075, that lies near the virial radius of Hydra I and displays an H i tail. ESO 501-G075 shows a similar level of morphological asymmetry as another cluster member, which lies near the cluster centre and shows signs of experiencing ram pressure. We investigate possible environme..
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Grants
Awarded by Australian Research Council
Funding Acknowledgements
This research was conducted by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) through project number CE170100013. We thank the referee for his or her comments. The Australian Square Kilometre Array Pathfinder (ASKAP) is part of the Australia Telescope National Facility, which is managed by the Commonwealth Scientific and Industrial Research Organisation (CSIRO). Operation of ASKAP is funded by the Australian Government with support from the National Collaborative Research Infrastructure Strategy. ASKAP uses the resources of the Pawsey Supercomputing Centre. Establishment of ASKAP, the Murchison Radio-astronomy Observatory (MRO), and the Pawsey Supercomputing Centre are initiatives of the Australian Government, with support from the Government of Western Australia and the Science and Industry Endowment Fund. We acknowledge theWajarri Yamatji as the traditional owners of the Observatory site. We also thank the MRO site staff. This paper includes archived data obtained through the CSIRO ASKAP Science Data Archive, CASDA (http://data.csiro.au). The Parkes radio telescope is part of the Australia Telescope National Facility, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 679627; project name FORNAX). This project has received support from the Bundesministerium fur Bildung und Forschung (BMBF) project 05A17PC2 for D-MeerKAT. SHO acknowledges support from the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science and ICT: MSIT) (no. NRF-2020R1A2C1008706). ARHS acknowledges receipt of the Jim Buckee Fellowship at the International Centre for Radio Astronomy Research - University of Western Australia (ICRAR-UWA). LC is the recipient of an Australian Research Council Future Fellowship (FT180100066) funded by the Australian Government. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration (NASA). This work is based in part on observations made with the Galaxy Evolution Explorer (GALEX). GALEX is a NASA Small Explorer, whose mission was developed in cooperation with the Centre National d'Etudes Spatiales (CNES) of France and the Korean Ministry of Science and Technology. GALEX is operated for NASA by the California Institute of Technology under NASA contract NAS598034.