J/ApJ/779/7ivo://CDS.VizieR/J/ApJ/779/7doi:10.26093/cds/vizier.17790007CDSCusano F.Clementini G.Garofalo A.Cignoni M.Federici L.Marconi M.,Musella I.Ripepi V.Boutsia K.Fumana M.Gallozzi S.Testa V.2015-10-14T18:33:32Z2015-06-09T07:24:57ZCDS support team

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

cds-question@unistra.frgalaxiesvisible-astronomybroad-band-photometryvariable-starsWe present B, V time-series photometry of Andromeda XIX (And XIX), the most extended (half-light radius of 6.2') of Andromeda's dwarf spheroidal companions, which we observed with the Large Binocular Cameras at the Large Binocular Telescope. We surveyed a 23'x23' area centered on And XIX and present the deepest color-magnitude diagram (CMD) ever obtained for this galaxy, reaching, at V~26.3mag, about one magnitude below the horizontal branch (HB). The CMD shows a prominent and slightly widened red giant branch, along with a predominantly red HB, which extends to the blue to significantly populate the classical instability strip. We have identified 39 pulsating variable stars, of which 31 are of RR Lyrae type and 8 are Anomalous Cepheids (ACs). Twelve of the RR Lyrae variables and three of the ACs are located within And XIX's half light radius. The average period of the fundamental mode RR Lyrae stars (<P_ab_>{=}0.62days, {sigma}=0.03days) and the period-amplitude diagram qualify And XIX as an Oosterhoff-Intermediate system. From the average luminosity of the RR Lyrae stars (<V(RR)>=25.34mag, {sigma}=0.10mag), we determine a distance modulus of (m-M)_0_=24.52+/-0.23mag in a scale where the distance to the Large Magellanic Cloud (LMC) is 18.5+/-0.1mag. The ACs follow a well-defined Period-Wesenheit (PW) relation that appears to be in very good agreement with the PW relationship defined by the ACs in the LMC.2013ApJ...779....7Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/779/7CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)J/MNRAS/437/2307 : LMC anomalous Cepheid Ks light curves (Ripepi+, 2014)J/AJ/147/13 : Disturbers of nearby giant galaxies (Karachentsev+, 2014)J/AJ/146/86 : Cosmicflows-2 catalog (Tully+, 2013)J/AJ/145/101 : Updated nearby galaxy catalog (Karachentsev+, 2013)J/ApJ/768/172 : Kinematic analysis of red giant in M31 dSphs (Collins+, 2013)J/ApJ/765/71 : VI light curves of RRL stars in M31 (Contreras Ramos+, 2013)J/MNRAS/435/1928 : Dwarf galaxy planes in Local Group (Pawlowski+, 2013)J/ApJ/758/11 : Bayesian distances to M31 satellites (Conn+, 2012)J/A+A/544/A155 : HST photometry of M31 globular clusters (Federici+, 2012)J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie+, 2012)J/ApJ/743/19 : Variable star candidates photometry in M31 (Clementini+, 2011)J/AJ/142/199 : Sizes and luminosities of stellar systems (Brodie+, 2011)J/AJ/141/171 : RR Lyrae stars in 6 ultra-deep fields of M31 (Jeffery+, 2011)J/AJ/138/184 : RR Lyrae variables in 2 fields of M31 (Sarajedini+, 2009)J/AcA/58/293 : Type-II and anomalous Cepheids in LMC (Soszynski+, 2008)J/AJ/132/926 : Galaxies in the Hubble Ultra Deep Field (Coe+, 2006)J/AJ/129/2232 : Variable stars in And I and And III (Pritzl+, 2005)J/AJ/127/318 : BV photometry of Andromeda II variables (Pritzl+, 2004)J/AJ/124/1464 : Variable stars in Andromeda VI (Pritzl+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/779/7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/779/7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/779/7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/779/7https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/779/7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/779/7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/779/7/table2 (Identification and properties of the variable stars identified in And XIX (updated version from the author))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/779/7/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/779/7/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/779/7/table2?GETtext/xml+votable180.050000true4.900435.040450.0055555555555555566/20351 20436 20437https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/779/7?format=asciiOpticaldefaultJ/ApJ/779/7/table2Identification and properties of the variable stars identified in And XIX (updated version from the author)LCLight curvesmeta.ref.urlcharNameVariable star identifier (VNN) (1)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNpNumber of photometric measures for this starmeta.numberintnullablef_Name[a] Observed in B only (2)meta.codecharRAJ2000[0] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000[34/35] Degree of declination (J2000)pos.eq.dec;meta.mainTypeVariable type (RRab (23 stars), RRc (8 stars) or AC (Anomalous Cepheid; 8 stars)meta.code;src.varcharPer[0.3/1.4] Pulsation perioddtime.periodfloatHJDHeliocentric Julian Date of maximum light; JD-2400000dtime.epochdouble<Bmag>[24.2/26.2] Intensity-averaged mean B-band magnitude (3)magphot.mag;em.opt.Bfloat<Vmag>[23.8/25.7]? Intensity-averaged mean V-band magnitudemagphot.mag;em.opt.VfloatnullableBamp[0.3/1.6] B-band amplitudemagphot.mag;em.opt.BfloatVamp[0.3/1.3]? V-band amplitudemagphot.mag;em.opt.VfloatnullableJ/ApJ/779/7/table3B, V photometry of the variable stars detected in And XIXrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable star identifier (as in table 2)meta.id;meta.maincharFiltFilter used in the observation (B or V)instr.setup;obscharTypeVariable type (as in table 2)meta.code;src.varcharHJDHeliocentric Julian Date; HJD-2455000dtime.epochdoublemag[23.2/28.7] Observed magnitude in Filtmagphot.magfloate_mag[0.01/0.4] The 1{sigma} uncertainty in magmagstat.error;phot.magfloat