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dc.contributor.authorRobotham, A. S. G.
dc.contributor.authorDriver, S. P.
dc.contributor.authorDavies, L. J. M.
dc.contributor.authorHopkins, A. M.
dc.contributor.authorBaldry, I. K.
dc.contributor.authorAgius, N. K.
dc.contributor.authorBauer, A. E.
dc.contributor.authorBland-Hawthorn, J.
dc.contributor.authorBrough, S.
dc.contributor.authorBrown, M. J. I.
dc.contributor.authorCluver, M.
dc.contributor.authorDe Propris, R.
dc.contributor.authorDrinkwater, M. J.
dc.contributor.authorHolwerda, B. W.
dc.contributor.authorKelvin, L. S.
dc.contributor.authorLara-Lopez, M. A.
dc.contributor.authorLiske, J.
dc.contributor.authorLopez-Sanchez, A. R.
dc.contributor.authorLoveday, J.
dc.contributor.authorMahajan, S.
dc.contributor.authorMcNaught-Roberts, T.
dc.contributor.authorMoffett, A.
dc.contributor.authorNorberg, P.
dc.contributor.authorObreschkow, D.
dc.contributor.authorOwers, M. S.
dc.contributor.authorPenny, S. J.
dc.contributor.authorPimbblet, K.
dc.contributor.authorPrescott, M.
dc.contributor.authorTaylor, E. N.
dc.contributor.authorvan Kampen, E.
dc.contributor.authorWilkins, S. M.
dc.identifier.citationRobotham , A S G , Driver , S P , Davies , L J M , Hopkins , A M , Baldry , I K , Agius , N K , Bauer , A E , Bland-Hawthorn , J , Brough , S , Brown , M J I , Cluver , M , De Propris , R , Drinkwater , M J , Holwerda , B W , Kelvin , L S , Lara-Lopez , M A , Liske , J , Lopez-Sanchez , A R , Loveday , J , Mahajan , S , McNaught-Roberts , T , Moffett , A , Norberg , P , Obreschkow , D , Owers , M S , Penny , S J , Pimbblet , K , Prescott , M , Taylor , E N , van Kampen , E & Wilkins , S M 2014 , ' Galaxy And Mass Assembly (GAMA) : galaxy close pairs, mergers and the future fate of stellar mass ' , Monthly Notices of the Royal Astronomical Society , vol. 444 , no. 4 , pp. 3986-4008 .
dc.identifier.otherPURE: 157933808
dc.identifier.otherPURE UUID: 22decddd-92d8-4656-a827-f57b942f135f
dc.identifier.otherWOS: 000343400100073
dc.identifier.otherScopus: 84908420632
dc.identifier.otherWOS: 000343400100073
dc.descriptionASGR acknowledges STFC and SUPA funding that were used to do this work. GAMA is funded by the STFC (UK), the ARC (Australia), the AAO and the participating institutions.en
dc.description.abstractWe use a highly complete subset of the Galaxy And Mass Assembly II (GAMA-II) redshift sample to fully describe the stellar mass dependence of close pairs and mergers between 10(8) and 10(12)M(circle dot). Using the analytic form of this fit we investigate the total stellar mass accreting on to more massive galaxies across all mass ratios. Depending on how conservatively we select our robust merging systems, the fraction of mass merging on to more massive companions is 2.0-5.6 per cent. Using the GAMA-II data we see no significant evidence for a change in the close pair fraction between redshift z = 0.05 and 0.2. However, we find a systematically higher fraction of galaxies in similar mass close pairs compared to published results over a similar redshift baseline. Using a compendium of data and the function gamma(M) = A(1 + z)(m) to predict the major close pair fraction, we find fitting parameters of A = 0.021 +/- 0.001 and m = 1.53 +/- 0.08, which represents a higher low-redshift normalization and shallower power-law slope than recent literature values. We find that the relative importance of in situ star formation versus galaxy merging is inversely correlated, with star formation dominating the addition of stellar material below M* and merger accretion events dominating beyond M*. We find mergers have a measurable impact on the whole extent of the galaxy stellar mass function (GSMF), manifest as a deepening of the 'dip' in the GSMF over the next similar to Gyr and an increase in M* by as much as 0.01-0.05 dex.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rightsThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society, © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.en
dc.subjectgalaxies: evolutionen
dc.subjectgalaxies: fundamental parametersen
dc.subjectgalaxies: interactionsen
dc.subjectgalaxies: kinematics and dynamicsen
dc.subjectgalaxies: luminosity function, mass functionen
dc.subjectgalaxies: stellar contenten
dc.subjectDigital sky surveyen
dc.subjectSupermassive black-holesen
dc.subjectLuminous red galaxiesen
dc.subjectCNOC2 redshift surveyen
dc.subjectEarly data releaseen
dc.subjectVLT deep surveyen
dc.subjectSimilat-to 1en
dc.subjectElliptic galaxiesen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleGalaxy And Mass Assembly (GAMA) : galaxy close pairs, mergers and the future fate of stellar massen
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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