J/MNRAS/461/3702ivo://CDS.VizieR/J/MNRAS/461/3702doi:10.26093/cds/vizier.74613702CDSRoderick T.A.Mackey A.D.Jerjen H.Da Costa G.S.2024-08-16T20:17:57Z2018-03-15T12:10:59ZCDS support team

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

cds-question@unistra.frgalaxiesvisible-astronomysloan-photometryWe present deep stellar photometry of the Bootes I dwarf spheroidal galaxy in g- and i-band filters, taken with the Dark Energy Camera at Cerro Tololo in Chile. Our analysis reveals a large, extended region of stellar substructure surrounding the dwarf, as well as a distinct overdensity encroaching on its tidal radius. A radial profile of the Bootes I stellar distribution shows a break radius indicating the presence of extra-tidal stars. These observations strongly suggest that Bootes I is experiencing tidal disruption, although not as extreme as that exhibited by the Hercules dwarf spheroidal. Combined with revised velocity dispersion measurements from the literature, we see evidence suggesting the need to review previous theoretical models of the Bootes I dwarf spheroidal galaxy.2016MNRAS.461.3702Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/461/3702CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/136/2321 : Washington photometry of Bootes I stars (Hughes+, 2008)J/ApJ/736/146 : Radial velocities of stars in Bootes I (Koposov+, 2011)J/ApJ/763/61 : Abundances of 7 red giant members of BootesI (Gilmore+ 2013)J/MNRAS/439/788 : Stromgren and Washington photometry in Boo I (Hughes+, 2014)J/MNRAS/450/1477 : VLA 352MHz image of the Bootes field. I. (Coppejans+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/461/3702https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/461/3702http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/461/3702https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/461/3702https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/461/3702http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/461/3702GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/461/3702/catalog (Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/461/3702/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/461/3702/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/461/3702/catalog?GETtext/xml+votable180.050000true209.935814.2330.0055555555555555566/8742 8744-8745 87472.381800341673347e-19 4.653515163505597e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/461/3702?format=asciiOpticaldefaultJ/MNRAS/461/3702/catalogCatalogRAJ2000Rigth ascension (J2000)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDEJ2000Declination (J2000)degpos.eq.dec;meta.maingmagSDSS g magnitudemagphot.mag;em.opt.BfloatimagSDSS i magnitudemagphot.mag;em.opt.IfloatWeight[0/1]? Weight (1)stat.weight;phys.atmol.weightdoublenullable