J/ApJ/758/11ivo://CDS.VizieR/J/ApJ/758/11doi:10.26093/cds/vizier.17580011CDSConn A.R.Ibata R.A.Lewis G.F.Parker Q.A.Zucker D.B.Martin N.F.,McConnachie A.W.Irwin M.J.Tanvir N.Fardal M.A.Ferguson A.M.N.,Chapman S.C.Valls-Gabaud D.2021-08-10T12:43:31Z2014-07-29T07:32:14ZCDS support team

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

cds-question@unistra.frgalaxiesstellar-distancegiant-starsIn "A Bayesian Approach to Locating the Red Giant Branch Tip Magnitude (Part I)," a new technique was introduced for obtaining distances using the tip of the red giant branch (TRGB) standard candle. Here we describe a useful complement to the technique with the potential to further reduce the uncertainty in our distance measurements by incorporating a matched-filter weighting scheme into the model likelihood calculations. In this scheme, stars are weighted according to their probability of being true object members. We then re-test our modified algorithm using random-realization artificial data to verify the validity of the generated posterior probability distributions (PPDs) and proceed to apply the algorithm to the satellite system of M31, culminating in a three-dimensional view of the system. Further to the distributions thus obtained, we apply a satellite-specific prior on the satellite distances to weight the resulting distance posterior distributions, based on the halo density profile. Thus in a single publication, using a single method, a comprehensive coverage of the distances to the companion galaxies of M31 is presented, encompassing the dwarf spheroidals Andromedas I-III, V, IX-XXVII, and XXX along with NGC 147, NGC 185, M33, and M31 itself. Of these, the distances to Andromedas XXIV-XXVII and Andromeda XXX have never before been derived using the TRGB. Object distances are determined from high-resolution tip magnitude posterior distributions generated using the Markov Chain Monte Carlo technique and associated sampling of these distributions to take into account uncertainties in foreground extinction and the absolute magnitude of the TRGB as well as photometric errors. The distance PPDs obtained for each object both with and without the aforementioned prior are made available to the reader in tabular form. The large object coverage takes advantage of the unprecedented size and photometric depth of the Pan-Andromeda Archaeological Survey.2012ApJ...758...11Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/758/11CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/ApJ/752/45 : SPLASH: Stellar spectro. of M31 satellites (Tollerud+, 2012)J/ApJ/711/361 : Local Group dE galaxies. II. (Geha+, 2010)J/A+A/509/A70 : Study of an eclipsing binary in M31 (Vilardell+, 2010)J/AJ/138/332 : LEDA CMD/tip of the red giant branch (Jacobs+, 2009)J/ApJ/703/L72 : Hipparcos calibration of the TRGB (Tabur+, 2009)J/other/A+ARV/15.289 : Distances of local galaxies (Tammann+, 2008)J/ApJ/652/313 : A detached eclipsing binary phot. in M 33 (Bonanos+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/758/11https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/758/11http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/758/11https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/758/11https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/758/11http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/758/11GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/758/11/table2 (M31 satellite parameters: distance and associated parameters of M31 and its companions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/758/11/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/758/11/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/758/11/table2?GETtext/xml+votable180.050000true10.684708341.268750.0055555555555555566/2110 2155 2216 2234 2272 2297 2565 2572 2573 2604 2611 2628 2668 2676 2709 2746 2755 2758 2767 2774 2777 2781 2789 2830 2852 13655 20437 20440https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/758/11?format=asciidefaultJ/ApJ/758/11/table2M31 satellite parameters: distance and associated parameters of M31 and its companionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintANameAbbreviated namemeta.idcharONameAlternative name (1)meta.idcharNdNumber of determinations for this sourcemeta.numberintnullablePPlot of the posterior probability for this satellitemeta.ref.urlcharDM[23.3/25.5]? Distance modulus (2)magphot.mag.distModfloatnullableE_DM[0.05/0.6]? Positive error on DMmagstat.error;stat.maxfloatnullablee_DM[0.05/1.1]? Negative error on DMmagstat.errorfloatnullableE(B-V)[0.04/0.2]? Extinction (3)magphot.color.excessfloatnullableDist[476/1255]? Distance (4)kpcpos.distance;pos.galactocentricintnullableE_Dist[15/218]? Positive error on Distkpcstat.error;stat.maxintnullablee_Dist[15/474]? Negative error on Distkpcstat.errorintnullableM31D[67/482]? M31 distancekpcpos.distance;pos.galactocentricintnullableE_M31D[0/234]? Positive error on M31D (5)kpcstat.error;stat.maxintnullablee_M31D[1/425]? Negative error on M31D (5)kpcstat.errorintnullableDistl[525/1355] Alternative literature distancekpcpos.distance;pos.galactocentricintB_Distl[738/955]? Upper range value for Distlkpcpos.distance;pos.galactocentric;stat.maxintnullableE_Distl[15/360]? Positive error on Distlkpcstat.error;stat.maxintnullablee_Distl[0/361]? Negative error on Distlkpcstat.errorintnullableMethDistance method (6)meta.notecharf_Meth[m] m: MCMC (Markov Chain Monte Carlo) without MF (mean-field approximation)meta.codecharAuthAuthor's name(s)meta.bib.authorcharnullableBibCodeBibcodemeta.bib.bibcodecharCommComment on referencemeta.ref;pos.framecharNameSource name as in table 1 (column added by CDS)meta.id;meta.maincharprimarySimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/ApJ/758/11/table1Tabulated distance posterior distributionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name \linkRole{distance estimations}meta.id;meta.maincharPerc[1/100] Probability percentage (1)%stat.fit.goodnessintDist1[384/1543] Distance; no halo density prior (1)kpcpos.distance;pos.galactocentricintDist2[0/1543] Distance; angle-specific prior (1)kpcpos.distance;pos.galactocentricint