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The HIX galaxy survey I: study of the most gas-rich galaxies from HIPASS

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dc.contributor.authorLutz, Katharina A.
dc.contributor.authorKilborn, Virginia A.
dc.contributor.authorCatinella, B.
dc.contributor.authorKoribalski, Baerbel S.
dc.contributor.authorBrown, T. H.
dc.contributor.authorCortese, L
dc.contributor.authorDenes, Helga
dc.contributor.authorJozsa, Gyula I. G.
dc.contributor.authorWong, O. Ivy
dc.date.accessioned2026-01-30T04:30:10Z
dc.date.available2026-01-30T04:30:10Z
dc.date.issued2017
dc.date.updated2023-10-01T07:16:27Z
dc.description.abstractWe present the HI eXtreme (HIX) galaxy survey targeting some of the most HI rich galaxies in the Southern hemisphere. The 13 HIX galaxies have been selected to host the most massive HI discs at a given stellar luminosity. We compare these galaxies to a control sample of average galaxies detected in the HI Parkes All Sky Survey (HIPASS). As the control sample is matched in stellar luminosity, we find that the stellar properties of HIX galaxies are similar to the control sample. Furthermore, the specific star formation rate and optical morphology do not differ between HIX and control galaxies. We find, however, the HIX galaxies to be less efficient in forming stars. For the most HI massive galaxy in our sample (ESO075-G006, log M-HI [ M circle dot]= (10.8 +/- 0.1)), the kinematic properties are the reason for inefficient star formation and HI excess. Examining the Australian Telescope Compact Array (ATCA) HI imaging and Wide Field Spectrograph (WiFeS) optical spectra of ESO075-G006 reveals an undisturbed galaxy without evidence for recent major, violent accretion events. A tilted ring fitted to the HI disc together with the gas-phase oxygen abundance distribution supports the scenario that gas has been constantly accreted on to ESO075-G006 but the high specific angular momentum makes ESO075-G006 very inefficient in forming stars. Thus, a massive HI disc has been built up.
dc.description.sponsorshipKAL is supported by a CSIRO OCE Science Leader funded PhD top-up scholarship. BC is the recipient of an Australian Research Council Future Fellowship (FT120100660). BC and LC acknowledge support from the Australian Research Council's Discovery Projects funding scheme (DP150101734). The Parkes telescope is part of the Australia Telescope that is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO.
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn0035-8711
dc.identifier.urihttps://hdl.handle.net/1885/733805059
dc.language.isoen_AUen_AU
dc.publisherOxford University Press
dc.rights© 2017 The Authors
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.titleThe HIX galaxy survey I: study of the most gas-rich galaxies from HIPASS
dc.typeJournal article
local.bibliographicCitation.issue1
local.contributor.affiliationLutz, Katharina A., Swinburne University of Technology
local.contributor.affiliationKilborn, Virginia A., Swinburne University of Technology
local.contributor.affiliationCatinella, B., University of Western Australia
local.contributor.affiliationKoribalski, Baerbel S, CSIRO, Australia Telescope National Facility
local.contributor.affiliationBrown, T. H., Swinburne University of Technology
local.contributor.affiliationCortese, L., University of Western Australia
local.contributor.affiliationDenes, Helga, College of Science, ANU
local.contributor.affiliationJozsa, Gyula I. G., Rhodes University
local.contributor.affiliationWong, O. Ivy, University of Western Australia
local.contributor.authoruidDenes, Helga, u1005255
local.description.embargo2099-12-31
local.description.notesImported from ARIES
local.identifier.absfor510100 - Astronomical sciences
local.identifier.absseo280120 - Expanding knowledge in the physical sciences
local.identifier.ariespublicationu4485658xPUB554
local.identifier.citationvolume467
local.identifier.doi10.1093/mnras/stx053
local.identifier.scopusID2-s2.0-85043503336
local.identifier.thomsonIDWOS:000398418900076
local.type.statusPublished Version
publicationvolume.volumeNumber467

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