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dc.contributor.authorDavies, L. J. M.
dc.contributor.authorRobotham, A. S. G.
dc.contributor.authordel P. Lagos, C.
dc.contributor.authorDriver, S. P.
dc.contributor.authorStevens, A. R. H.
dc.contributor.authorBahé, Y. M.
dc.contributor.authorAlpaslan, M.
dc.contributor.authorBremer, M. N.
dc.contributor.authorBrown, M. J. I.
dc.contributor.authorBrough, S.
dc.contributor.authorBland-Hawthorn, J.
dc.contributor.authorCortese, L.
dc.contributor.authorElahi, P.
dc.contributor.authorGrootes, M. W.
dc.contributor.authorHolwerda, B. W.
dc.contributor.authorLudlow, A. D.
dc.contributor.authorMcGee, S.
dc.contributor.authorOwers, M.
dc.contributor.authorPhillipps, S.
dc.identifier.citationDavies , L J M , Robotham , A S G , del P. Lagos , C , Driver , S P , Stevens , A R H , Bahé , Y M , Alpaslan , M , Bremer , M N , Brown , M J I , Brough , S , Bland-Hawthorn , J , Cortese , L , Elahi , P , Grootes , M W , Holwerda , B W , Ludlow , A D , McGee , S , Owers , M & Phillipps , S 2019 , ' Galaxy And Mass Assembly (GAMA) : environmental quenching of centrals and satellites in groups ' , Monthly Notices of the Royal Astronomical Society , vol. 483 , no. 4 , pp. 5444–5458 .
dc.identifier.otherPURE: 261905800
dc.identifier.otherPURE UUID: dd243b2a-d052-416a-b372-411e456fb2d4
dc.identifier.otherScopus: 85062285113
dc.description.abstractRecently a number of studies have found a similarity between the passive fraction of central and satellite galaxies when controlled for both stellar and halo mass. These results suggest that the quenching processes that affect galaxies are largely agnostic to central/satellite status, which contradicts the traditional picture of increased satellite quenching via environmental processes such as stripping, strangulation, and starvation. Here we explore this further using the Galaxy And Mass Assembly (GAMA) survey, which extends to ∼2 dex lower in stellar mass than SDSS, is more complete for closely separated galaxies (≳95 per cent compared to ≳70 per cent), and identifies lower-halo-mass groups outside of the very local Universe (Mhalo ∼ 1012 M⊙ at 0.1 < z < 0.2). As far as possible we aim to replicate the selections, completeness corrections, and central/satellite division of one of the previous studies but find clear differences between passive fractions of centrals and satellites. We also find that our passive fractions increase with both halo-to-satellite mass ratio and central-to-second rank mass ratio. This suggests that quenching is more efficient in satellites that are low-mass for their halo (i.e. at high halo-to-satellite mass ratio in comparison to low halo-to-satellite mass ratio) and are more likely to be passive in older groups – forming a consistent picture of environmental quenching of satellites. We then discuss potential explanations for the previously observed similarity, such as dependence on the group-finding method.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at
dc.subjectGalaxies: evolutionen
dc.subjectGalaxies: generalen
dc.subjectGalaxies: groups: generalen
dc.subjectGalaxies: star formationen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleGalaxy And Mass Assembly (GAMA) : environmental quenching of centrals and satellites in groupsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

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