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dc.contributorInternational Centre for Radio Astronomy Research (ICRAR), University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia
dc.contributorEuropean Southern Observatory, Karl Schwarzschild Straße 2, D-85748 Garching, Germany
dc.contributorInternational Centre for Radio Astronomy Research (ICRAR), University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
dc.contributorInternational Centre for Radio Astronomy Research (ICRAR), University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; SUPA, School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, UK
dc.contributorARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia; Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia
dc.contributorPhysics and Astronomy Department, University of Louisville, Louisville KY 40292, USA
dc.contributorAustralian Astronomical Optics, Macquarie University, 105 Delhi Rd, North Ryde, NSW 2113, Australia
dc.contributorArmagh Observatory and Planetarium, College Hill, Armagh, BT61 DG, UK
dc.contributorARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia; Australian Astronomical Optics, Macquarie University, 105 Delhi Rd, North Ryde, NSW 2113, Australia; Department of Physics and Astronomy, Macquarie University, NSW 2109, Australia
dc.contributorInternational Centre for Radio Astronomy Research (ICRAR), University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia; Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, D-81679 Munich, Germany
dc.contributorATNF, CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW 1710, Australia
dc.contributorRuhr University Bochum, Faculty of Physics and Astronomy, AIRUB, German Centre for Cosmological Lensing, D-44780 Bochum, Germany
dc.contributor.authorRoychowdhury, Sambit
dc.contributor.authorMeyer, Martin J.
dc.contributor.authorRhee, Jonghwan
dc.contributor.authorZwaan, Martin A.
dc.contributor.authorChauhan, Garima
dc.contributor.authorDavies, Luke J. M.
dc.contributor.authorBellstedt, Sabine
dc.contributor.authorDriver, Simon P.
dc.contributor.authorLagos, Claudia del P.
dc.contributor.authorRobotham, Aaron S. G.
dc.contributor.authorBland-Hawthorn, Joss
dc.contributor.authorDodson, Richard
dc.contributor.authorHolwerda, Benne W.
dc.contributor.authorHopkins, Andrew M.
dc.contributor.authorLara-López, Maritza A.
dc.contributor.authorLópez-Sánchez, Ángel R.
dc.contributor.authorObreschkow, Danail
dc.contributor.authorRozgonyi, Kristof
dc.contributor.authorWhiting, Matthew T.
dc.contributor.authorWright, Angus H.
dc.date.accessioned2024-02-01T17:11:30Z
dc.date.available2024-02-01T17:11:30Z
dc.date.issued2022-03-01T00:00:00Z
dc.identifier.doi10.3847/1538-4357/ac49ea
dc.identifier.doi10.48550/arXiv.2201.03575
dc.identifier.other2022arXiv220103575R
dc.identifier.otherastro-ph.GA
dc.identifier.otherastro-ph.CO
dc.identifier.other10.48550/arXiv.2201.03575
dc.identifier.other2022arXiv220103575R
dc.identifier.other10.3847/1538-4357/ac49ea
dc.identifier.other2022ApJ...927...20R
dc.identifier.otherarXiv:2201.03575
dc.identifier.other0000-0002-5820-4589
dc.identifier.other0000-0002-2838-3010
dc.identifier.other0000-0001-8496-4306
dc.identifier.other0000-0003-0101-1804
dc.identifier.other0000-0002-2969-4013
dc.identifier.other0000-0003-3085-0922
dc.identifier.other0000-0003-4169-9738
dc.identifier.other0000-0001-9491-7327
dc.identifier.other0000-0003-3021-8564
dc.identifier.other0000-0003-0429-3579
dc.identifier.other0000-0001-7516-4016
dc.identifier.other0000-0003-0392-3604
dc.identifier.other0000-0002-4884-6756
dc.identifier.other0000-0002-6097-2747
dc.identifier.other0000-0001-7327-3489
dc.identifier.other0000-0001-8083-8046
dc.identifier.other0000-0002-1527-0762
dc.identifier.other0000-0002-5611-9292
dc.identifier.other0000-0003-1160-2077
dc.identifier.other0000-0001-7363-7932
dc.identifier.urihttp://hdl.handle.net/20.500.14302/1434
dc.description.abstractWe measure how the atomic gas (H I) fraction $\left({f}_{{\rm{H}}\,{\rm\small{I}}}=\tfrac{{M}_{{\rm{H}}\,{\rm\small{I}}}}{{M}_{* }}\right)$ of groups and pairs taken as single units vary with average stellar mass (&lt;M <SUB>*</SUB>&gt;) and average star formation rate (&lt;SFR&gt;), compared to isolated galaxies. The H I 21 cm emission observation are from (i) archival ALFALFA survey data covering three fields from the GAMA survey (provides environmental and galaxy properties), and (ii) DINGO pilot survey data of one of those fields. The mean f <SUB>H I </SUB> for different units (groups/pairs/isolated galaxies) are measured in regions of the log(&lt;M <SUB>*</SUB>&gt;)-log(&lt;SFR&gt;) plane, relative to the z ~ 0 star-forming main sequence (SFMS) of individual galaxies, by stacking f <SUB>H I </SUB> spectra of individual units. For ALFALFA, f <SUB>H I </SUB> spectra of units are measured by extracting H I spectra over the full groups/pair areas and dividing by the total stellar mass of member galaxies. For DINGO, f <SUB>H I </SUB> spectra of units are measured by co-adding H I spectra of individual member galaxies, followed by division by their total stellar mass. For all units, the mean f <SUB>H I </SUB> decreases as we move to higher &lt;M <SUB>*</SUB>&gt; along the SFMS and as we move from above the SFMS to below it at any &lt;M <SUB>*</SUB>&gt;. From the DINGO-based study, mean f <SUB>H I </SUB> in groups appears to be lower compared to isolated galaxies for all &lt;M <SUB>*</SUB>&gt; along the SFMS. From the ALFALFA-based study, we find substantially higher mean f <SUB>H I </SUB> in groups compared to isolated galaxies (values for pairs being intermediate) for &lt;M <SUB>*</SUB>&gt; ≲ 10<SUP>9.5</SUP> M <SUB>⊙</SUB>, indicating the presence of substantial amounts of H I not associated with cataloged member galaxies in low mass groups.
dc.publisherThe Astrophysical Journal
dc.titleThe Variation of the Gas Content of Galaxy Groups and Pairs Compared to Isolated Galaxies
dc.typearticle
dc.source.journalApJ
dc.source.journalApJ...927
dc.source.volume927
refterms.dateFOA2024-02-01T17:11:30Z
dc.identifier.bibcode2022ApJ...927...20R


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