Journal article
WALLABY pre-pilot survey: H i content of the Eridanus supergroup
BQ For, J Wang, T Westmeier, OI Wong, C Murugeshan, L Staveley-Smith, HM Courtois, D Pomarède, K Spekkens, B Catinella, KBW McQuinn, A Elagali, BS Koribalski, K Lee-Waddell, JP Madrid, A Popping, TN Reynolds, J Rhee, K Bekki, H Dènes Show all
Monthly Notices of the Royal Astronomical Society | Published : 2021
Abstract
We present observations of the Eridanus supergroup obtained with the Australian Square Kilometre Array Pathfinder (ASKAP) as part of the pre-pilot survey for the Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY). The total number of detected H i sources is 55, of which 12 are background galaxies not associated with the Eridanus supergroup. Two massive H i clouds are identified and large H i debris fields are seen in the NGC 1359 interacting galaxy pair, and the face-on spiral galaxy NGC 1385. We describe the data products from the source finding algorithm and present the basic parameters. The presence of distorted H i morphology in all detected galaxies suggests ongoing tidal inte..
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Grants
Awarded by ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D)
Awarded by BMBF
Awarded by MINECO/FEDER, UE
Awarded by State Agency for Research of the Spanish MCIU through the 'Center of Excellence Severo Ochoa' award
Funding Acknowledgements
This research was supported by the ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013. PK is partially supported by the BMBF project 05A17PC2 for D-MeerKAT. LV-M acknowledges financial support from the grants AYA2015-65973-C3-1-R and RTI2018096228-B-C31 (MINECO/FEDER, UE), as well as from the State Agency for Research of the Spanish MCIU through the `Center of Excellence Severo Ochoa' award to the Instituto de Astrofisica de Andalucia (SEV-2017-0709). The Australian SKA Pathfinder is part of the Australia Telescope National Facility that is funded by the AustralianGovernment 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 on-site. This research has made use of images of the Legacy Surveys. The Legacy Surveys consist of three individual and complementary projects: theDark EnergyCamera Legacy Survey (DECaLS; Proposal ID #2014B-0404; PIs: David Schlegel and Arjun Dey), the Beijing-Arizona Sky Survey (BASS; NOAO Prop. ID #2015A0801; PIs: Zhou Xu and Xiaohui Fan), and theMayall z-band Legacy Survey (MzLS; Prop. ID #2016A-0453; PI: Arjun Dey). DECaLS, BASS, andMzLS together include data obtained, respectively, at the Blanco telescope, Cerro Tololo Inter-American Observatory, NSF's NOIRLab; the Bok telescope, Steward Observatory, University of Arizona; and the Mayall telescope, Kitt Peak National Observatory, NOIRLab. The Legacy Surveys project is honoured to be permitted to conduct astronomical research on Iolkam Du'ag (Kitt Peak), a mountain with particular significance to the Tohono O'odham Nation. B-QF thanks A. Robotham and L. Davies for assisting the use PROFOUND and VISTA-VIEW cutout service.