J/MNRAS/446/120ivo://CDS.VizieR/J/MNRAS/446/120doi:10.26093/cds/vizier.74460120CDSDuc P.-A.Cuillandre J.-C.Karabal E.Cappellari M.Alatalo K.,Blitz L.Bournaud F.Bureau M.Crocker A.F.Davies R.L.Davis T.A.,De Zeeuw P.T.Emsellem E.Khochfar S.Krajnovic D.Kuntschner H.,McDermid R.M.Michel-Dansac L.Morganti R.Naab T.Oosterloo T.,Paudel S.Sarzi M.Scott N.Serra P.Weijmans A.-M.Young L.M.2024-08-14T20:18:39Z2015-11-03T13:33:57ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysgalaxiescatalogsgalaxy-classification-systemsGalactic archaeology based on star counts is instrumental to reconstruct the past mass assembly of Local Group galaxies. The development of new observing techniques and data reduction, coupled with the use of sensitive large field of view cameras, now allows us to pursue this technique in more distant galaxies exploiting their diffuse low surface brightness (LSB) light. As part of the ATLAS3D project, we have obtained with the MegaCam camera at the Canada-France-Hawaii Telescope extremely deep, multiband images of nearby early-type galaxies (ETGs). We present here a catalogue of 92 galaxies from the ATLAS3D sample, which are located in low- to medium-density environments. The observing strategy and data reduction pipeline, which achieve a gain of several magnitudes in the limiting surface brightness with respect to classical imaging surveys, are presented. The size and depth of the survey are compared to other recent deep imaging projects. The paper highlights the capability of LSB-optimized surveys at detecting new prominent structures that change the apparent morphology of galaxies. The intrinsic limitations of deep imaging observations are also discussed, among those, the contamination of the stellar haloes of galaxies by extended ghost reflections, and the cirrus emission from Galactic dust. The detection and systematic census of fine structures that trace the present and past mass assembly of ETGs are one of the prime goals of the project. We provide specific examples of each type of observed structures - tidal tails, stellar streams and shells - and explain how they were identified and classified. We give an overview of the initial results. The detailed statistical analysis will be presented in future papers.2015MNRAS.446..120Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/446/120CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/413/813 : ATLAS3D project. I. (Cappellari+, 2011)J/MNRAS/414/888 : ATLAS3D project. III. (Emsellem+, 2011)J/MNRAS/414/940 : ATLAS3D project. IV. (Young+, 2011)J/MNRAS/416/1680 : ATLAS3D project. VII. (Cappellari+, 2011)J/MNRAS/433/2812 : ATLAS3D project. XXIII. (Krajnovic+, 2013)J/MNRAS/448/3484 : ATLAS3D Project. XXX (McDermid+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/446/120https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/446/120http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/446/120https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/446/120https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/446/120http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/446/120GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/446/120/table1 (Catalog of ETGs with MegaCam observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/446/120/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/446/120/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/446/120/table1?GETtext/xml+votable180.050000true18.818875-1.62610560.0055555555555555565/4581 6/664 697 2145 2374 4439 4447 4565 4807 4829 4840 4869 4989 5021 5075 5182 5196 5198 5288 5429 5599 5773 5975 6012 6087 6093 6099 6162 7214 7355 7374 7385 7424 7442 7460 7560 8193 8195-8196 9186 10454 10501 10523 10551 10739 11026 11246 11435 11443 11457 11776 11791 11800 11824 13336 13401 15056 15204 17744 17761 18002 18209 18755 18766 19442 20014 20101 22740 22914 23177-23178 25907 25979 26055 26065 26173 26210 27079 27367 27515 27578 27595 27669 27671 27712 27714 27722 27758 28045 28200 28221 28264 28300 28311 28362 28495 28524 28538 28653 31453-31454 31499 31624 32168 32482 32539 36819 36831 40952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/446/120?format=asciiOpticaldefaultJ/MNRAS/446/120/table1Catalog of ETGs with MegaCam observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoteindicates a note in table4meta.ref.urlcharGalaxyGalaxy namemeta.id;meta.maincharprimaryBandObserved bandinstr.bandpasscharNNumber of individual exposuresmeta.numberintTimeTotal integration timestime.expointIQImage Quality (FWHM of the PSF)arcsecmeta.code.qual;obs.imagefloatBackBackground level (in ADUs)instr.background;phys.atmol.levelfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/446/120/table4ETG classification based on the deep imagingrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy namemeta.id;meta.maincharClassClassification (1)meta.code.classcharComIndividual commentsmeta.notechar