J/AJ/142/199ivo://CDS.VizieR/J/AJ/142/199doi:10.26093/cds/vizier.51420199CDSBrodie J.P.Romanowsky A.J.Strader J.Forbes D.A.2017-12-15T10:55:43Z2013-04-05T13:37:58ZCDS support team

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

cds-question@unistra.frgalaxiesstellar-associationsgalaxy-classification-systemsphotometryWe use a combined imaging and spectroscopic survey of the nearby central cluster galaxy, M87, to assemble a sample of 34 confirmed UltraCompact Dwarfs (UCDs) with half-light radii of >=10pc measured from Hubble Space Telescope (HST) images. This doubles the existing sample in M87, making it the largest such sample for any galaxy, while extending the detection of UCDs to unprecedentedly low luminosities (MV=-9). With this expanded sample, we find no correlation between size and luminosity, in contrast to previous suggestions, and no general correlation between size and galactocentric distance. We explore the relationships between UCDs, less luminous extended clusters (including faint fuzzies), Globular Clusters (GCs), as well as early-type galaxies and their nuclei, assembling an extensive new catalog of sizes and luminosities for stellar systems. Most of the M87 UCDs follow a tight color-magnitude relation, offset from the metal-poor GCs. This, along with kinematical differences, demonstrates that most UCDs are a distinct population from normal GCs, and not simply a continuation to larger sizes and higher luminosities. The UCD color-magnitude trend couples closely with that for Virgo dwarf elliptical nuclei. We conclude that the M87 UCDs are predominantly stripped nuclei. The brightest and reddest UCDs may be the remnant nuclei of more massive galaxies while a subset of the faintest UCDs may be tidally limited and related to more compact star clusters. In the broader context of galaxy assembly, blue UCDs may trace halo build-up by accretion of low-mass satellites, while red UCDs may be markers of metal-rich bulge formation in larger galaxies.2011AJ....142..199Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/142/199CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/604/521 : Luminosities and masses of galaxies out to z~3 (Trujillo+ 2004)J/AJ/133/2764 : M31 globular clusters structural parameters (Barmby+, 2007)J/A+A/472/111 : Centaurus Compact Object Survey (Mieske+, 2007)J/AJ/137/4956 : Globular clusters around NGC 1407 (Romanowsky+, 2009)J/MNRAS/414/3699 : Study of hot stellar systems and galaxies (Misgeld+, 2011)J/MNRAS/415/3393 : Stars and globulars in NGC4494 (Foster+, 2011)J/ApJS/197/33 : The M87 globular cluster system (Strader+, 2011)J/ApJ/737/86 : UCD galaxies in the Coma cluster (Chiboucas+, 2011)J/A+A/531/A4 : Ultra compact dwarfs and globulars in Hya I (Misgeld+, 2011)J/AJ/142/88 : Segue 3 photometric and kinematic data (Fadely+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/142/199https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/142/199http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/142/199https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/142/199https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/142/199http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/142/199GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/142/199/table2 (Catalog of sizes and luminosities for nearby stellar systems)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/142/199/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/142/199/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/142/199/table2?GETtext/xml+votable180.050000true320.379166719.11722220.0055555555555555565/6935 6941 6978 6/50 242 619 2110 2142 2152 2153 2154 2158 2214 2216 2234 2244 2272 2297 2374 2565 2572 2573 2589 2591 2604 2611 2613 2621 2622 2623 2628 2664 2666 2667 2668 2676 2681 2692 2701 2704 2708 2709 2710 2746 2752 2755 2756 2758 2767 2774 2777 2789 2830 2852 3950 4410 4419 4447 4843 4990 5208 5939 6021 6087 6093 6389 7416 8173 8193 8196 8264 8266 8745 9436 9666 10008 10183 10203 10321 10336 10379 10444 10769 11263 11791 12018 12025 12405 12425 12531 12687 12943 13655 14149 14489 16042 16647 16682 16898 17121 17229 17472 17605 17612 17711 18184 18269 18411 18926 18935 19091 19506 20001 20262 20355 20437 20440 21017 22577 22746 22826 24732 24733 24843 25083 25533 25768 25873 26055 26125 26189 26313 26318 26361 26362 26487 26542 26980 27000 27079 27186 27207 27237 27255 27515 27580 27604 27605 27714 27718 27719 27721 27724 27730 27731 27733 27734 27735 27736 27738 27739 27756 27763 27769 27771 27773 27774 27852 27857 27859 27861 27862 27904 27906 27907 27908 27910 27916 27919 27936 27938 27939 27941 27943 27944 27945 27946 27948 27949 27951 27960 27981 27986 28032 28033 28037 28038 28044 28045 28067 28136 28142 28221 28360 28361 28495 28577 28741 28751 28959 29222 29294 29715 29716 29717 29718 31019 31115 31398 31417 31692 31723 32790 32983 33073 33077 33096 33097 33098 33123 33287 33306 33315 33321 33323 33328 33330 33527 33635 33922 33954 34242 34317 34534 34535 35720 35968 35969 35970 36152 36156 36247 36785 37294 37513 37514 37550 38347 38465 38693 38704 38852 38853 38954 39100 39642 40294 41011 41257 41304 42076 42278 42320 42700 42990 43125 43193 43227 43262 43263 43626 43627 43828 43837 43838 43894 44086 44220 44427 45423 46568 47125 47383 47620 47745 47777 47825 47868 47903 47916 47935 47971 48035 48434 48444 48698 48952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/142/199?format=asciiOpticaldefaultJ/AJ/142/199/table2Catalog of sizes and luminosities for nearby stellar systemsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStellar system identification (1)meta.id;pos.framecharHostHost/Environmentmeta.id.parentcharVMag[-24.61/-0.06] Absolute V band magnitude (2)magphys.magAbs;em.opt.Vfloatlogrh[0/4.537] Log of half-light radius (2)log(pc)phys.size.radiusfloatRefReference (3)meta.ref;pos.framecharSimbadNameSimbad column added by the CDSmeta.idchar_RAPosition from Simbad, if system known in Simbad (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from Simbad, if system known in Simbad (declination part)degpos.eq.dec;meta.mainnullable