J/ApJ/814/71ivo://CDS.VizieR/J/ApJ/814/71doi:10.26093/cds/vizier.18140071CDSCoppola G.Marconi M.Stetson P.B.Bono G.Braga V.F.Ripepi V.,Dall'Ora M.Musella I.Buonanno R.Fabrizio M.Ferraro I.,Fiorentino G.Iannicola G.Monelli M.Nonino M.Thevenin F.,Walker A.R.2017-09-12T12:39:45Z2017-01-23T14:09:39ZCDS support team

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

cds-question@unistra.frvariable-starsinfrared-photometryvisible-astronomyWide-band photometryWe present new multiband (UBVI) time-series data of helium burning variables in the Carina dwarf spheroidal galaxy. The current sample includes 92 RR Lyrae --six of them are new identifications-- and 20 Anomalous Cepheids, one of which is new identification. The analysis of the Bailey diagram shows that the luminosity amplitude of the first overtone component in double-mode variables is located along the long-period tail of regular first overtone variables, while the fundamental component is located along the short-period tail of regular fundamental variables. This evidence further supports the transitional nature of these objects. Moreover, the distribution of Carina double-mode variables in the Petersen diagram (P_1_/P_0_ versus P_0_) is similar to metal-poor globulars (M15, M68), to the dwarf spheroidal Draco, and to the Galactic Halo. This suggests that the Carina old stellar population is metal-poor and affected by a small spread in metallicity. We use trigonometric parallaxes for five field RR Lyrae stars to provide an independent estimate of the Carina distance using the observed reddening free Period-Wesenheit [PW,(BV)] relation. Theory and observations indicate that this diagnostic is independent of metallicity. We found a true distance modulus of {mu}=20.01+/-0.02 (standard error of the mean)+/-0.05 (standard deviation) mag. We also provided independent estimates of the Carina true distance modulus using four predicted PW relations (BV, BI, VI, BVI) and we found: {mu}=(20.08+/-0.007+/-0.07)mag, {mu}=(20.06+/-0.006+/-0.06)mag, {mu}=(20.07+/-0.008+/-0.08)mag, and {mu}=(20.06+/-0.006+/-0.06)mag. Finally, we identified more than 100 new SX Phoenicis stars that together with those already known in the literature (340) make Carina a fundamental laboratory for constraining the evolutionary and pulsation properties of these transitional variables.2015ApJ...814...71Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/814/71CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)J/A+A/580/A18 : Carina Project VIII. Abundances (Fabrizio+, 2015)J/A+A/572/A10 : (BV) photometry in Carina dSph (de Boer+, 2014)J/PASP/126/521 : UBVRIJHK photometry of RR Lyrae in M4 (Stetson+, 2014)J/ApJ/779/102 : Metallicities of RGB stars in dwarf galaxies (Kirby+, 2013)J/AJ/146/141 : BV photometry of dwarf Cepheids in Carina (Vivas+, 2013)J/AJ/146/101 : LINEAR. III. Catalog of periodic variables (Palaversa+, 2013)J/ApJ/767/62 : RR Lyrae stars BV photometry in UMa I (Garofalo+, 2013)J/MNRAS/429/385 : Short-period variables near GC (Matsunaga+, 2013)J/ApJ/756/121 : Variable stars in Her dwarf galaxy (Musella+, 2012)J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie+, 2012)J/ApJ/752/42 : BV time series in Ursa Major II (Dall'Ora+, 2012)J/MNRAS/422/89 : Cetus dSph RR Lyrae (Monelli+, 2012)J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)J/AJ/136/2441 : Metallicity of RR0 Lyrae in galactic bulge (Kunder+, 2008)J/ApJ/678/865 : LONEOS-I RR Lyrae stars (Miceli+, 2008)J/ApJ/674/L81 : Variable stars in dwarf galaxy CVn I (Kuehn+, 2008)J/AJ/127/1158 : QUEST RR Lyrae Survey first catalog (Vivas+, 2004)J/AJ/126/197 : Carina projects. I. Bright variables stars (Dall'Ora+, 2003)J/AJ/115/1856 : Dwarf Cepheids in Carina (Mateo+, 1998)J/A+AS/121/327 : RR Lyr pulsational model (Bono+ 1997)J/AJ/108/1016 : Kinematics of local RR lyrae stars. I. (Layden, 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/814/71https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/814/71http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/814/71https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/814/71https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/814/71http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/814/71GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/814/71/table3 (Catalog of candidate variable stars that according to the current investigation are not variable)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/814/71/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/814/71/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/814/71/table3?GETtext/xml+votable180.050000true100.59125-50.85972220.005555555555555556Cone search capability for table J/ApJ/814/71/table2 (Catalog of Carina variable stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/814/71/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/814/71/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/814/71/table2?GETtext/xml+votable180.050000true100.882125-50.85147220.005555555555555556Cone search capability for table J/ApJ/814/71/table12 (Pulsation properties of the new Carina SX Phe)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/814/71/table12?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/814/71/table12?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/814/71/table12?GETtext/xml+votable180.050000true100.0589167-51.02316670.005555555555555556Cone search capability for table J/ApJ/814/71/table13 (Pulsation properties of the known Carina SX Phe)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/814/71/table13?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/814/71/table13?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/814/71/table13?GETtext/xml+votable180.050000true99.9712917-51.07541670.0055555555555555566/39091 39094 39097 39099 39100https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/814/71?format=asciiInfraredOpticaldefaultJ/ApJ/814/71/table3Catalog of candidate variable stars that according to the current investigation are not variablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNpNumber of photometric measurements for this starmeta.numberintnullable[SMS86][1/172] Identifiermeta.id;meta.mainintNpulLink to pulsation properties if anymeta.ref.urlintnullableRAJ2000[6] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[50/51] Degree of Declination (J2000)pos.eq.dec;meta.mainTS86Type from S86 (G1)(G2)src.classTD03Type from D03 (G1)(G2)src.classcharf_TD03[ab] Flag on D03 (1)meta.codecharTypeType from this work (G2)src.classcharf_Type[a-e] Flag on Type (1)meta.codechardB14Display sources within 0.5" in de Boer+, 2014, J/A+A/572/A10meta.ref.urlintnullableD03Display sources within 1" in Dall'Ora+, 2003, J/AJ/126/197meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/814/71/table2Catalog of Carina variable stars[SMS86][3/237] Identifier (1)meta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNpNumber of photometric measurements for this starmeta.numberintnullableNpulLink to pulsation properties if anymeta.ref.urlintnullablef_[SMS86][*] * = Newly detected variables in this papermeta.codecharRAJ2000[6] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[50/51] Degree of Declination (J2000)pos.eq.dec;meta.mainTS86Type from S86 (G1)(G2)src.classcharD03Identifier from Paper I (D03; V7-V126) (G1)meta.id.crosscharTD03Type from D03 (G2)src.classcharVM13[2/37]? Identifier from VM13 (G1)meta.id.crossintnullableTVM13Type from VM13 (G2)src.classcharC13Identifier from Paper VI (C13; V7-V126) (G1)meta.id.crosscharTC13Type from C13 (G2)src.classcharTypeType from this work (G2)src.classchardB14Display sources within 0.5" in de Boer+, 2014, J/A+A/572/A10meta.ref.urlintnullableLCLight curves plotmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/814/71/table4Photometry of the Carina variable starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[SMS86][3/237] Identifiermeta.id;meta.mainintHJDVHeliocentric Julian Date of V band observationdtime.epochdoubleVmag[14.4/22.8] V band magnitudemagphot.mag;em.opt.Vfloate_Vmag[0.001/0.3] The 1{sigma} uncertainty in Vmagmagstat.error;phot.mag;em.opt.VfloatHJDB? Heliocentric Julian Date of Bband observationdtime.epochdoublenullableBmag[15.1/23.1]? B band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag[0.001/0.09]? The 1{sigma} uncertainty in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableHJDI? Heliocentric Julian Date of I band observationdtime.epochdoublenullableImag[13.6/22.5]? I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.002/0.2]? The 1{sigma} uncertainty in Imagmagstat.error;phot.mag;em.opt.IfloatnullableHJDU? Heliocentric Julian Date of U band observationdtime.epochdoublenullableUmag[15.4/25.4]? U band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag[0.002/2.3]? The 1{sigma} uncertainty in Umagmagstat.error;phot.mag;em.opt.UfloatnullableJ/ApJ/814/71/table5Pulsation properties of Carina variable starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[SMS86][3/237] Identification numbermeta.id;meta.mainintTypeVariable type (G2)src.classcharEpoch[51519.2/52401.1] Epoch of maximum lightdtime.epochdoublePer[0.26/685] Perioddtime.perioddoublef_Per[d] Flag on Per (1)meta.codechar<Umag>[15.5/24.5]? Intensity-averaged U magnitudemagphot.mag;em.opt.Ufloatnullablef_<Umag>[c] Flag on <Umag> (1)meta.codechar<Bmag>[15.3/22.6] Intensity-averaged B magnitudemagphot.mag;em.opt.Bfloatf_<Bmag>[c] Flag on <Bmag> (1)meta.codechar<Vmag>[14.6/22.4] Intensity-averaged V magnitudemagphot.mag;em.opt.Vfloatf_<Vmag>[c] Flag on <Vmag> (1)meta.codechar<Imag>[13.8/22.4] Intensity-averaged I magnitudemagphot.mag;em.opt.Ifloatf_<Imag>[c] Flag on <Imag> (1)meta.codecharAu[0.3/1.5]? U-band extinctionmagphys.absorptionfloatnullableAb[0.09/1.6]? B-band extinctionmagphys.absorptionfloatnullableAv[0.07/1.3]? V-band extinctionmagphys.absorptionfloatnullableAi[0.04/0.9]? I-band extinctionmagphys.absorptionfloatnullableJ/ApJ/814/71/table12Pulsation properties of the new Carina SX Phe[CMS2015][341/442] Star identifiermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[6] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000[50/51] Degree of declination (J2000)pos.eq.dec;meta.mainPer[0.04/0.2] Perioddtime.perioddouble<Bmag>[22.7/23.5] Intensity-averaged B magnitudemagphot.mag;em.opt.Bfloat<Vmag>[22.4/23.2] Intensity-averaged V magnitudemagphot.mag;em.opt.Vfloat<Imag>[21.8/23.2] Intensity-averaged I magnitudemagphot.mag;em.opt.IfloatdB14Display sources within 0.5" in de Boer+, 2014, J/A+A/572/A10meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/814/71/table13Pulsation properties of the known Carina SX PherecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[7/338]? Star identifier (\dicS{[VM2013] DC-NNN} in Simbad)meta.id;meta.mainintnullableRAJ2000[0/6] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000[50/51] Degree of declination (J2000)pos.eq.dec;meta.mainPer[0.03/0.8] Perioddtime.perioddouble<Bmag>[22.2/23.6] Intensity-averaged B magnitudemagphot.mag;em.opt.Bfloat<Vmag>[21.9/23.3] Intensity-averaged V magnitudemagphot.mag;em.opt.Vfloat<Imag>[17.1/22.9]? Intensity-averaged I magnitudemagphot.mag;em.opt.Ifloatnullable[MHN98]M98 identifier (V1-V20) (1)meta.idcharSimbadSimbad column added by the CDSmeta.ref.urlchar