J/A+A/406/75ivo://CDS.VizieR/J/A+A/406/75doi:10.26093/cds/vizier.34060075CDSRejkuba M.Minniti D.Silva D.R.2018-06-20T06:05:02Z2005-02-23T17:16:21ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryvariable-starsinfrared-photometryThe first variable star catalogue in a giant elliptical galaxy NGC 5128 (Centaurus A) is presented. Using multi-epoch observations with ISAAC at the VLT we have detected 1504 red variables in two halo fields covering 10.46-arcmin square. For the variables with at least 10 good measurements, periods and amplitudes were determined using Fourier analysis and non-linear sine-curve fitting algorithms. The final catalogue contains 1146 long period variables with well established light curve parameters. Periods, amplitudes, JsHKs photometry as well as individual KS-band magnitudes are provided for all the variables. The distribution of amplitudes ranges from 0.3 to a few magnitudes in the Ks-band, with a median value around 0.7mag. The amplitudes, mean magnitudes and periods indicate that the majority of variables belong to the class of long period variables with semiregular and Mira variables. Exhaustive simulations were performed in order to assess the completeness of our catalogue and the accuracy of the derived periods.2003A&A...406...75Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/406/75CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/369/812 : UVKs photometry of globular clusters in NGC 5128 (Rejkuba 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/406/75https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/406/75http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/406/75https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/406/75https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/406/75http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/406/75GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap7.952274030004205e-20 1.7798557115773645e-19InfrareddefaultJ/A+A/406/75/table1Near-IR multi-epoch photometry observing logrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField (F1 or F2)meta.id;obs.fieldcharJDJulian datedtime.epochdoubleExpExposure timemintime.duration;obs.exposureintXMean airmass during the observing sequenceobs.airMassfloatSeeingSeeingarcsecinstr.obsty.seeingfloatFilEpFilter epochmeta.id;obscharprimaryInstr[1/2]? Instrument (1)meta.id;instrintnullableJ/A+A/406/75/varsVariable stars (tables 2 to 6 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[RMS2003]Identification, FN NNNNNmeta.id;meta.maincharprimaryxposx position with respect to the reference epoch (G1)pixpos.cartesian.x;instr.detfloatyposy position with respect to the reference epoch (G1)pixpos.cartesian.y;instr.detfloatFilEpReference epoch, defined in table1.datmeta.id;obscharPer? Best fitting perioddtime.period;meta.modelledintnullableA? Semi-amplitudemagsrc.var.amplitudefloatnullablechi2? Reduced chi2 of the sine-curve fitstat.fit.chi2;stat.fit.param;meta.modelledfloatnullablesignif? Significance of the period from Fourier analysismeta.notefloatnullableJsmag? Single epoch Js-band magnitude (1)magphot.mag;em.IR.JfloatnullableHmag? Single epoch H-band magnitude (1)magphot.mag;em.IR.Hfloatnullable<Ks>magMean Ks-band magnitude from the sine-curve fitmagphot.mag;em.IR.KfloatPlotplot the observations of this star as a function of timemeta.ref.urlcharJ/A+A/406/75/KdataK-band measurements for the 6 variables detected in Fields 1 and 2 (tables 7 and 8 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[RMS2003]Identification, FN NNNNmeta.id;meta.maincharFilEpFilter epochmeta.id;obscharKmag? Filter epoch K-band magnitude (2)magphot.mag;em.IR.Kfloatnullablee_Kmag? rms uncertainty on Kmag (2)magstat.error;phot.mag;em.IR.Kfloatnullable