J/ApJ/877/49ivo://CDS.VizieR/J/ApJ/877/49doi:10.26093/cds/vizier.18770049CDSGoldman S.R.Boyer M.L.McQuinn K.B.W.Whitelock P.A.McDonald I.,van Loon J.T.Skillman E.D.Gehrz R.D.Javadi A.Sloan G.C.,Jones O.C.Groenewegen M.A.T.Menzies J.W.2020-02-14T06:07:46Z2019-07-14T15:54:26ZCDS support team

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

cds-question@unistra.frgalaxiesvariable-starsmillimeter-astronomyphotometrysubmillimeter-astronomyThe survey for DUST in Nearby Galaxies with Spitzer (DUSTiNGS) has identified hundreds of candidate dust-producing asymptotic giant branch (AGB) stars in several nearby metal-poor galaxies. We have obtained multi-epoch follow-up observations for these candidates with the Spitzer Space Telescope and measured their infrared (IR) light curves. This has allowed us to confirm their AGB nature and investigate pulsation behavior at very low metallicity. We have obtained high-confidence pulsation periods for 88 sources in seven galaxies. We have confirmed DUSTiNGS variable star candidates with a 20% success rate and determined the pulsation properties of 19 sources already identified as thermally pulsing AGB stars. We find that the AGB pulsation properties are similar in all galaxies surveyed here, with no discernible difference between the DUSTiNGS galaxies (down to 1.4% solar metallicity; [Fe/H]=-1.85) and the far more metal-rich Magellanic Clouds (up to 50% solar metallicity; [Fe/H]=-0.38). These results strengthen the link between dust production and pulsation in AGB stars and establish the IR period-luminosity relation as a reliable tool (+/-4%) for determining distances to galaxies, regardless of metallicity.2019ApJ...877...49Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/877/49CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/216/10 : DUSTiNGS. I. The Good Source Catalog (Boyer+, 2015)J/ApJ/851/152 : DUSTiNGS. IV. AGB spectral types with HST (Boyer+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/877/49https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/877/49http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/877/49https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/877/49https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/877/49http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/877/49GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/877/49/table2 (The archival Spitzer observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/877/49/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/877/49/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/877/49/table2?GETtext/xml+votable180.050000true5.102083359.29166670.005555555555555556Cone search capability for table J/ApJ/877/49/table3 (The results of 3.6 and 4.5 um lightcurve fitting)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/877/49/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/877/49/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/877/49/table3?GETtext/xml+votable180.050000true352.240020814.615850450.0055555555555555566/2774 2777 2780 3042 5287 17165 18041 19990 26858 27351 296994.414320678087048e-20 5.517906024225661e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/877/49?format=asciiMillimeterdefaultJ/ApJ/877/49/table2The archival Spitzer observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxymeta.id.parentcharPIDSpitzer Program Identifiersmeta.id;obsintAORIndividual Spitzer AORmeta.idintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainObs.dateObservation Start Date, UTtime.start;obsnullabletexpExposure time, hourshtime.duration;obs.exposurefloatJ/ApJ/877/49/table3The results of 3.6 and 4.5 um lightcurve fittingrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxymeta.id.parentcharn_Galaxy[_12 ] Multiplicity index on Galaxymeta.notecharTIDTarget IDmeta.idintRAJ2000Right Ascension, decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination, decimal degrees (J2000)degpos.eq.dec;meta.main<3.6>magmid-line 3.6um magnitude from best fit light curvemagphot.mag;em.IR.3-4umfloat<4.5>mag? mid-line 4.5um magnitude from best fit light curvemagphot.mag;em.IR.4-8umfloatnullablePer3.6Best fit pulsation periods, 3.6umdtime.periodintPer4.5? Best fit pulsation periods, 4.5umdtime.periodintnullablePer3.6-2Second best fit pulsation periods, 3.6umdtime.periodintPer4.5-2? Second best fit pulsation periods, 4.5umdtime.periodintnullableAmpFitted peak-to-peak 3.6um amplitudemagsrc.var.amplitude;em.IR.3-4umfloatColor? Spitzer [3.6] - [4.5] colormagphot.color;em.IR;em.IRfloatnullables_Color? standard deviation of Color%stat.stdev;phot.color;arith.ratiofloatnullableFlagFit quality flag (1)meta.code.errorcharLC36Show the 3.6um light curvemeta.ref.urlcharlc36Name of the fits 3.6um light curve file in subdirectory lcmeta.id;meta.maincharLC45Show the 4.5um light curvemeta.ref.urlcharlc45Name of the fits 4.5um light curve file in subdirectory lcmeta.idchar