2026-07-27T21:16:47Zivo://CDS.VizieR/J/MNRAS/413/9712025-05-19T09:50:00ZJ.MNRASIVOAGalaxy And Mass Assembly (GAMA) DR1The Galaxy and Mass Assembly (GAMA) survey has been operating since 2008 February on the 3.9-m Anglo-Australian Telescope using the AAOmega fibre-fed spectrograph facility to acquire spectra with a resolution of R~1300 for 120862 Sloan Digital Sky Survey selected galaxies. The target catalogue constitutes three contiguous equatorial regions centred at 9h (G09), 12h (G12) and 14.5h (G15) each of 12x4deg^2^ to limiting fluxes of r_pet_<19.4, r_pet_<19.8 and r_pet_<19.4 mag, respectively (and additional limits at other wavelengths). Spectra and reliable redshifts have been acquired for over 98 per cent of the galaxies within these limits. Here we present the survey footprint, progression, data reduction, redshifting, re-redshifting, an assessment of data quality after 3yr, additional image analysis products (including ugrizYJHK photometry, Sersic profiles and photometric redshifts), observing mask and construction of our core survey catalogue (GamaCore). From this we create three science-ready catalogues: GamaCoreDR1 for public release, which includes data acquired during year 1 of operations within specified magnitude limits (2008 February to April); GamaCoreMainSurvey containing all data above our survey limits for use by the GAMA Team and collaborators; and GamaCoreAtlasSV containing year 1, 2 and 3 data matched to Herschel-ATLAS science demonstration data. These catalogues along with the associated spectra, stamps and profiles can be accessed via the GAMA website: http://www.gama-survey.org/surveysgalaxiescatalogsredshiftedvisible-astronomysloan-photometryinfrared-photometrycosmologyobservational-astronomygalactic-and-extragalactic-astronomyhttps://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/413/971http://doi.org/10.26093/cds/vizier.74130971https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/413/9712011MNRAS.413..971Dhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/413/971Cone search capability for table J/MNRAS/413/971/gamacore (Galaxy catalogue containing all SDSS galaxies within the GAMA regions, including GAMA-matched photometry and first year redshifts, GamaCoreDR1)Cone search capability for table J/MNRAS/413/971/extra (Galaxy catalogue containing the same columns as GamaCoreDR1, for all objects that are not within the r band survey limit, GamaCoreExtraDR1)Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/MNRAS/413/971Driver S.P.Hill D.T.Kelvin L.S.Robotham A.S.G.Liske J.Norberg P.,Baldry I.K.Bamford S.P.Hopkins A.M.Loveday J.Peacock J.A.,Andrae E.Bland-Hawthorn J.Brough S.Brown M.J.I.Cameron E.,Ching J.H.Y.Colless M.Conselice C.J.Croom S.M.Cross N.J.G.,De Propris R.Dye S.Drinkwater M.J.Ellis S.Graham A.W.,Grootes M.W.Gunawardhana M.Jones D.H.Van Kampen E.Maraston C.,Nichol R.C.Parkinson H.R.Phillipps S.Pimbblet K.Popescu C.C.,Prescott M.Roseboom I.G.Sadler E.M.Sansom A.E.Sharp R.G.,Smith D.J.B.Taylor E.Thomas D.Tuffs R.J.Wijesinghe D.Dunne L.,Frenk C.S.Jarvis M.J.Madore B.F.Meyer M.J.Seibert M.,Staveley-Smith L.Sutherland W.J.Warren S.J.CDS2012https://cds.unistra.fr/vizier-org/licences_vizier.htmlCDS support team <cds-question@unistra.fr>DatasetAstroObjectsastronomy