J/ApJ/933/61ivo://CDS.VizieR/J/ApJ/933/61doi:10.26093/cds/vizier.19330061CDSHsu Y.-H.Lin Y.-T.Huang S.Nelson D.Rodriguez-Gomez V.Lai H.-T.,Greene J.Leauthaud A.Aragon-Salamanca A.Bundy K.Emsellem E.,Merrifield M.More S.Okabe N.Rong YuBrownstein J.R.Lane R.R.,Pan K.Schneider D.P.2024-11-06T20:26:08Z2024-06-20T13:25:47ZCDS support team

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

cds-question@unistra.frgalaxiesredshiftedvisible-astronomyspectroscopyAlthough it is generally accepted that massive galaxies form in a two-phased fashion, beginning with a rapid mass buildup through intense starburst activities followed by primarily dry mergers that mainly deposit stellar mass at outskirts, the late time stellar mass growth of brightest cluster galaxies (BCGs), the most massive galaxies in the universe, is still not well understood. Several independent measurements have indicated a slower mass growth rate than predictions from theoretical models. We attempt to resolve the discrepancy by measuring the frequency of BCGs with multiple cores, which serve as a proxy of the merger rates in the central region and facilitate a more direct comparison with theoretical predictions. Using 79 BCGs at z=0.06-0.15 with integral field spectroscopic data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) project, we obtain a multiple-core fraction of 0.11+/-0.04 at z~0.1 within an 18kpc radius from the center, which is comparable to the value of 0.08+/-0.04 derived from mock observations of 218 simulated BCGs from the cosmological hydrodynamical simulation IllustrisTNG. We find that most cores that appear close to the BCGs from imaging data turn out to be physically associated systems. Anchoring on the similarity in the multiple-core frequency between the MaNGA and IllustrisTNG, we discuss the mass growth rate of BCGs over the past 4.5Gyr.2022ApJ...933...61Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/933/61CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)J/AJ/130/968 : SDSS-C4 cluster catalog (Miller+, 2005)J/MNRAS/379/867 : BCG C4 cluster catalog (von der Linden+, 2007)J/MNRAS/388/1537 : Galaxy pairs from SDSS-DR2 (McIntosh+, 2008)J/AJ/137/4795 : Dynamical state of BCGs (Coziol+, 2009)J/ApJS/182/216 : Surface photometry of Virgo ellipticals (Kormendy+, 2009)J/MNRAS/439/611 : X-ray luminosities of SDSS DR7 cl. from RASS (Wang+, 2014)J/MNRAS/446/3943 : galaxies 2D phot. decompositions in SDSS-DR7 (Meert+, 2015)J/MNRAS/448/2530 : Morphology and structure of BCG (Zhao+, 2015)J/ApJ/821/114 : The CGS. IV. Elliptical galaxies colors (Huang+, 2016)J/MNRAS/455/2440 : 2D phot. decompositions in r, g & i bands (Meert+, 2016)J/ApJ/816/98 : Gal. in X-ray clusters with DES. I. (Zhang+, 2016)J/AJ/154/86 : MaNGA catalog, DR15 (Wake+, 2017)J/AJ/155/188 : Nuclear activity in low-power radio galaxies (Lin+, 2018)J/MNRAS/483/2057 : SDSS-IV MaNGA Morphological Catalogues (Fischer+, 2019)J/A+A/649/A7 : MC structure and properties (Gaia Collaboration+, 2021)J/A+A/653/A160 : Updated radial velocities from Gaia DR2 (Seabroke+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/933/61https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/933/61http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/933/61https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/933/61https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/933/61http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/933/61GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/933/61/table2 (*The 128 brightest cluster galaxies (BCGs) in the MaNGA Product Launch-9 (MPL-9) sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/933/61/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/933/61/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/933/61/table2?GETtext/xml+votable180.050000true213.83486252.34593660.0055555555555555566/4318 4647 4666 4759 4772 4784 4822 4844 4922 4990 5012 5016-5017 5327 5338 5360 5375 5535 5562 5579 5608 5622 5625 5647 5801 5824 5960 5972 5979 5987 6223 6245 6269-6270 6436 6462 6499 6515 6522-6523 6532 6593-6594 6609 6655 6741 7334-7335 8572 8663 8669 8685 8693 8702 9035 9037 9042 9050 9052 9057-9058 9162 9242 9255 9262 9265 9314 9333 9352 9354 9359 9366 9370 9471 9504 9506-9507 9793 9817 9820-9821 10022 10182 10269 10271 10376 10379 10548 10594 10677 10718 10795 10941 11003 11090 11099-11100 11158 11306 11320 11325 11424 11426 11591 19097 19099 19121 21847 23059-23060 23204 23208 25981 27053 27247 27316 28630 30038 31693 32446 32508 36725https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/933/61?format=asciiOpticaldefaultJ/ApJ/933/61/table2*The 128 brightest cluster galaxies (BCGs) in the MaNGA Product Launch-9 (MPL-9) sampleSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/128] Running sequence numbermeta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainz[0.02/0.15] The catalog redshift (1)src.redshiftdoublelogM[14/15.1] log Halo masslog(solMass)phys.massfloatMaNGAMaNGA plate-ifu identifiermeta.id.crosscharSel[0/1] Selection flag (1=the 115 BCGs described in Section 2.1)meta.codeintPhot[0/2]? Photometry source (2)meta.codeintnullableIFU18[0/1] IFU coverage (1=IFU coverage is at least 18kpc)meta.codeintMCatDisplay data from MaNGA DR15 (Wake+ 2017, J/AJ/154/86) and Sanchez+ 2022, J/ApJS/262/36meta.ref.urlintnullableDR7Display data from SDSS-DR7 (II/294) within 0.5"meta.ref.urlcharSloanDisplay the online SDSS-DR17 data for the nearest objectmeta.ref.urlchar