J/MNRAS/470/3427ivo://CDS.VizieR/J/MNRAS/470/3427doi:10.26093/cds/vizier.74703427CDSDong H.Schodel R.William B.F.Nogueras-Lara F.Gallego-Cano E.,Gallego-Calvente T.Wang Q.D.Morris R.M.Do T.Ghez A.2024-08-17T20:19:53Z2018-01-11T08:28:01ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyvariable-starsinfrared-photometryWe used four-year baseline HST/WFC3 IR observations of the Galactic Centre in the F153M band (1.53 micron) to identify variable stars in the central ~2.3'x2.3' field. We classified 3845 long-term (periods from months to years) and 76 short-term (periods of a few days or less) variables among a total sample of 33070 stars. For 36 of the latter ones, we also derived their periods (<3 days). Our catalog not only confirms bright long period variables and massive eclipsing binaries identified in previous works, but also contains many newly recognized dim variable stars. For example, we found delta Scuti and RR Lyrae stars towards the Galactic Centre for the first time, as well as one BL Her star (period < 1.3d). We cross-correlated our catalog with previous spectroscopic studies and found that 319 variables have well-defined stellar types, such as Wolf-Rayet, OB main sequence, supergiants and asymptotic giant branch stars. We used colours and magnitudes to infer the probable variable types for those stars without accurately measured periods or spectroscopic information. We conclude that the majority of unclassified variables could potentially be eclipsing/ellipsoidal binaries and Type II Cepheids. Our source catalog will be valuable for future studies aimed at constraining the distance, star formation history and massive binary fraction of the Milky Way nuclear star cluster.2017MNRAS.470.3427Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/470/3427CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/470/3427https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/470/3427http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/470/3427https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/470/3427https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/470/3427http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/470/3427GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/470/3427/table3 (List of detected stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/470/3427/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/470/3427/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/470/3427/table3?GETtext/xml+votable180.050000true266.40831-29.026240.0055555555555555566/28830https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/470/3427?format=asciiInfrareddefaultJ/MNRAS/470/3427/table3List of detected starsF153M? Magnitude at the F153M band (1)magphot.mag;em.UVfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintctpindicates counterparts in tables 8 and/or 9meta.ref.urlcharLCShow the light curvemeta.ref.urlcharIDSource IDmeta.id;meta.mainintprimaryRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedn_F153M[s] s for saturatedmeta.notechars_F153M? Systematic error at the F153M band (2)magstat.error;phot.mag;em.UV.100-200nmfloatnullablee_F153M? Statistic error at the F153M bandmagstat.errorfloatnullableF127M? Magnitude at the F127M band (1)magphot.mag;em.UVfloatnullablen_F127M[s] s for saturatedmeta.notechars_F127M? Systematic error at the F127M band (2)magstat.error;phot.mag;em.UV.100-200nmfloatnullablee_F127M? Statistic error at the F127M bandmagstat.errorfloatnullablechi2ychi^2^_y_ valuestat.fit.chi2floatchi2ybchi^2^_{y,b}_ valuestat.fit.chi2floatchi2dchi^2^_d_ valuestat.fit.chi2floatchi2dbchi^2^_{d,b}_ valuestat.fit.chi2floatVindex[0/3] Variable index (3)meta.codeintJ/MNRAS/470/3427/table8The counterparts of our variables stars in previous variability studiesIDSource IDsmeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGCIRSName of counterparts in Tamura et al. 1996ApJ...467..645Tmeta.idcharBlumName of counterparts in Blum et al. 1996, Cat. J/ApJ/470/864meta.idchar[OEG99]? Name of counterparts in Ott et al. 1999, Cat. J/ApJ/523/248meta.idintnullable[GMC2001]Name of counterparts in Glass et al. 2001, Cat. J/MNRAS/321/77 N-NNN, [GMC2001] N-NNN in Simbadmeta.idcharPeeplesName of counterparts in Peeples et al. 2007AcA....57..173P (PSDJHHMMSS.ss+DDMMSS.s), not in Simbadmeta.idcharReidName of counterparts in Reid et al. 2007ApJ...659..378R SiONN, IRSNN, not in Simbadmeta.idcharRafelskiName of counterparts in Rafelski et al. 2007, Cat. J/ApJ/659/1241 IRSNNAA, SN-NN, GCIRS NNAA, [GKM98] SN-NN in Simbadmeta.idchar[MKN2009]? Name of counterparts in Matsunaga et al. 2009, Cat. J/MNRAS/399/1709 NNN, [MKN2009] NNNN in Simbadmeta.idintnullablePfuhlName of counterparts in Pfuhl et al. 2011ApJ...741..108Pmeta.idcharJ/MNRAS/470/3427/table9The counterparts of our variables stars in previous spectroscopy studiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSource IDmeta.id;meta.mainintNameWidely used namemeta.idcharn_NameNote on Namemeta.notechar[BSD96]? Name of counterparts in Blum et al. 2003, Cat. J/ApJ/597/323 [BSD96] NNN in Simbadmeta.idintnullablen_[BSD96]Note on [BSD96]meta.notecharManess? Name of counterparts in Maness et al. 2007ApJ...669.1024M, not in Simbadmeta.idintnullablen_ManessNote on Manessmeta.notechar[PGM2006]Name of counterparts in Paumard et al. 2006, Cat. J/ApJ/643/1011 [PGM2006] ENN in Simbadmeta.idcharn_[PGM2006]Note on [PGM2006]meta.notechar[BMF2009]? Name of counterparts in Bartko et al. 2009, Cat. J/ApJ/697/1741 [BMF2009] NN in Simbadmeta.idintnullablen_[BMF2009]Note on [BMF2009]meta.notechar[GKM98]Name of counterparts in Do et al. 2013, Cat. J/ApJ/764/154 GCIRS NNAA, [GKM98] SN-NN in Simbadmeta.idcharn_[GKM98]Note on [GKM98]meta.notecharStostadName of counterparts in Stostad et al. 2015, Cat. J/ApJ/808/106 not in Simbadmeta.idcharn_StostadNote on Stostadmeta.notechar[FNS2015]? Name of counterparts in Feldmeier-Krause et al. 2015, Cat. J/A+A/584/A2, [FNS2015] NNNNN in Simbadmeta.idintnullablen_[FNS2015]Note on [FNS2015]meta.notechar[NS2013]? Name of counterparts in Nishiyama et al. 2016A&A...588A..49N, [NS2013] NN in Simbadmeta.idintnullablen_[NS2013]Note on [NS2013]meta.notechar[FKN2017]? the name of counterparts in Feldmeier-Krause et al. 2017, Cat. J/MNRAS/464/194, not yet in Simbadmeta.idintnullablen_[FKN2017]Note on [FKN2017]meta.notechar