J/ApJ/833/167ivo://CDS.VizieR/J/ApJ/833/167doi:10.26093/cds/vizier.18330167CDSMartin N.F.Ibata R.A.Lewis G.F.McConnachie A.Babul A.Bate N.F.,Bernard E.Chapman S.C.Collins M.M.L.Conn A.R.Crnojevic D.,Fardal M.A.Ferguson A.M.N.Irwin M.Mackey A.D.McMonigal B.,Navarro J.F.Rich R.M.2017-07-03T13:15:09Z2017-05-12T14:25:18ZCDS support team

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

cds-question@unistra.frgalaxiesabsolute-magnitudesurface-photometryWe present a comprehensive analysis of the structural properties and luminosities of the 23 dwarf spheroidal galaxies that fall within the footprint of the Pan-Andromeda Archaeological Survey (PAndAS). These dwarf galaxies represent the large majority of Andromeda's known satellite dwarf galaxies and cover a wide range in luminosity (-11.6<~M_V_<~-5.8 or 10^4.2^<~L<~10^6.5^L_{sun}_) and surface brightness (25.1<~{mu}_0_<~29.3mag/arcsec^2^). We confirm most previous measurements, but we find And XIX to be significantly larger than before (r_h_=3065_-935_^+1065^pc, M_V_=-10.1_-0.4_^+0.8^) and cannot derive parameters for And XXVII as it is likely not a bound stellar system. We also significantly revise downward the luminosities of And XV and And XVI, which are now M_V_~-7.5 or L~10^5^L_{sun}_. Finally, we provide the first detailed analysis of Cas II/And XXX, a fairly faint system (M_V_=-8.0_-0.3_^+0.4^) of typical size (r_h_=270+/-50pc), located in close proximity to the two bright elliptical dwarf galaxies NGC 147 and NGC 185. Combined with the set of homogeneous distances published in an earlier contribution, our analysis dutifully tracks all relevant sources of uncertainty in the determination of the properties of the dwarf galaxies from the PAndAS photometric catalog. We further publish the posterior probability distribution functions of all the parameters we fit for in the form of MCMC chains available online; these inputs should be used in any analysis that aims to remain truthful to the data and properly account for covariance between parameters.2016ApJ...833..167Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/833/167CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/798/77 : Metallicity of RGB stars in 6 M31 dwarf galaxies (Ho+, 2015)J/ApJ/789/147 : Star formation histories of LG dwarf galaxies (Weisz+, 2014)J/ApJ/776/80 : PAndAS view of Andromeda satellites. I. (Martin+, 2013)J/ApJ/768/172 : Kinematic analysis of red giant in M31 dSphs (Collins+, 2013)J/ApJ/758/11 : Bayesian distances to M31 satellites (Conn+, 2012)J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie+, 2012)J/MNRAS/380/281 : Faint galactic satellites spectrosc. survey (Martin+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/833/167https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/833/167http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/833/167https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/833/167https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/833/167http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/833/167GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/833/167/dsph (Derived parameters of the dwarf galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/833/167/dsph?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/833/167/dsph?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/833/167/dsph?GETtext/xml+votable180.050000true11.41541738.03750.005555555555555556Cone search capability for table J/ApJ/833/167/table3 (*Chains generated by the algorithm for the 23 dwarf spheroidal galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/833/167/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/833/167/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/833/167/table3?GETtext/xml+votable180.050000true11.4141938.037326940.0055555555555555566/2110 2216 2234 2272 2297 2565 2572 2573 2604 2611 2628 2668 2676 2746 2755 2767 2781 2789 2830 2852 13655 20436 20437 20440https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/833/167?format=asciidefaultJ/ApJ/833/167/dsphDerived parameters of the dwarf galaxiesell[0/0.7] Ellipticity {epsilon}src.ellipticityfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalGalaxy Namemeta.id;meta.maincharprimaryCDisplay the 500 randomly selected drawings for this dwarf galaxy (link to table 3)meta.ref.urlcharFlagFlag(s) on Gal or other name (G1)meta.code.errorcharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000[0.3/3] RA uncertaintysstat.error;pos.eq.rafloatDEJ2000Degree of declination (J2000)pos.eq.dec;meta.maine_DEJ2000[4/53] DE uncertaintyarcsecstat.error;pos.eq.decinte_ell[0/0.5] Negative error on ellstat.errorfloatE_ell[0.02/0.5] Positive error on ellstat.error;stat.maxfloatPA[-20/140] Position angle {theta}degpos.posAnginte_PA[3/90] Negative error on PAdegstat.errorintE_PA[3/90] Positive error on PAdegstat.error;stat.maxintrh[0.4/14.2] Half-light radius in arcminutesarcminphys.angSize;srcfloate_rh[0.1/2] Negative error on rharcminstat.errorfloatE_rh[0.1/3.4] Positive error on rharcminstat.error;stat.maxfloatu_rhpc[~] Uncertainty flag on rhpcmeta.code.errorcharrhpcHalf-light radius in parsecs (G2)pcphys.size.radiusinte_rhpc[15/1065]? Negative error on rhpcpcstat.errorintnullableE_rhpc[30/935]? Positive error on rhpcpcstat.error;stat.maxintnullableVmag[12.4/18.5] Apparent magnitude m_v,0_magphot.mag;em.optfloate_Vmag[0.2/0.5] Negative uncertainty on Vmagmagstat.error;phot.mag;em.opt.VfloatE_Vmag[0.2/0.7] Positive uncertainty on Vmagmagstat.error;stat.maxfloatVMag[-11.6/-5.8] Absolute magnitude M_v,0_ (G2)magphys.magAbs;em.opt.Vfloate_VMag[0.2/1] Negative uncertainty on VMagmagstat.error;phot.mag;em.opt.VfloatE_VMag[0.2/0.9] Positive uncertainty on VMagmagstat.error;stat.maxfloatlogL[4.2/6.6] Log of the luminosity of the dwarf galaxy (G2)log(solLum)phys.luminosityfloate_logL[0.09/0.4] Negative uncertainty on logLlog(solLum)stat.errorfloatE_logL[0.09/0.4] Positive uncertainty on logLlog(solLum)stat.error;stat.maxfloatmu0[25/29.3] Central surface brightnessmag.arcsec**-2phot.mag.sbfloate_mu0[0.2/1] Negative uncertainty on mu0mag.arcsec**-2stat.errorfloatE_mu0[0.2/1] Positive uncertainty on mu0mag.arcsec**-2stat.error;stat.maxfloatSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlcharJ/ApJ/833/167/table3*Chains generated by the algorithm for the 23 dwarf spheroidal galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalGalaxy namemeta.id;meta.maincharRAJ2000Right ascension of the centroid (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of the centroid (J2000)degpos.eq.dec;meta.mainellEllipticity {epsilon}src.ellipticityfloatPA[-90/230] Position angle {theta}degpos.posAngfloatrh[0.2/29.4] Half-light radius r_h_ in arcminutes (1)arcminphys.angSize;srcfloatrhpc[47/7120] Half-light radius r_h_ in parsecs (1)pcphys.size.radiusintVmag[11.8/21.4] Apparent magnitude m_v,0_magphot.mag;em.optfloatVMag[-12.2/-2.6] Absolute magnitude M_v,0_ (2)magphys.magAbs;em.opt.VfloatlogL[2.9/6.8] Log of the luminosity of the dwarf galaxy (log_10_(L_V_/L_{sun}_)log(solLum)phys.luminositydoublemu0[23.7/31] Central surface brightnessmag.arcsec**-2phot.mag.sbdoubleDM[22.8/25.8] Distance modulus from Conn+ (2012, J/ApJ/758/11)magphot.mag.distModdouble