J/AJ/115/193ivo://CDS.VizieR/J/AJ/115/193doi:10.26093/cds/vizier.51150193CDSLayden A.C.2023-04-06T16:50:28Z1999-08-24T14:51:09ZCDS support team

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

cds-question@unistra.frvariable-starsccd-photometryI present V-band CCD photometry for a sample of 103 RR Lyrae variables selected from the General Catalogue of Variable Stars to lie in the inner halo of the Galaxy. I also describe a method for obtaining the mean apparent magnitude and the epoch at maximum light of an RR Lyrae star. The method requires as few as five photometric observations, and simulations demonstrate that the associated errors are relatively small. I employ this method to derive the mean magnitudes and maximum light epochs of the 103 RR Lyrae stars observed. These stars were selected, based on their Galactic coordinates and original photographic photometry, to lie near their orbital tangent points, thus providing a sample well suited for measuring the rotational kinematics of the inner halo. Using interstellar reddenings from the literature and the observed mean V magnitudes, I derive distances for these stars and show that their actual locations in the Galaxy are indeed suitable for use in a kinematic study, despite the large zero-point errors in the survey photographic photometry.1998AJ....115..193Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/115/193CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/214 : Combined General Catalogue of Variable Stars (Kholopov+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/115/193https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/115/193http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/115/193https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/115/193https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/115/193http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/115/193GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/115/193/table3 (Derived light-curve parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/115/193/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/115/193/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/115/193/table3?GETtext/xml+votable180.050000true252.4341667-75.60972220.0055555555555555566/28999 29011-29012 29015 29019 29732 29998 30002 30015 30097 30099 30118 31755 31776 31778 31782 31784 31802 31806 31879 32324 32334 32354 41044 41055 41218-41219 41222-41224 41228 41234 41238 41291 41294 41305 41340 41995 42004 42009 42016 42021-42022 42053 42065 43340 43343 43360 43366 43371 43383 43387 44117 44145 44158 44243-44244 44290 44322 44326 44328 44420 44429 44431 45231 45242 45245 45288 45584 45591 45596 45598-45599 45617 45620 45634 45636-45637 45640 45643 45648 45813-45814 45870 45961 45963 45985 45992 45994 47191 48120-48121 48898 48910 48935 48944 49025https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/115/193?format=asciiOpticaldefaultJ/AJ/115/193/table1Individual photometric observationsStarStar namemeta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian date of mid-observationdtime.epochdoublePhaseDerive photometric phasetime.phasefloatVmagJohnson V magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.errorfloatRun[1/8] Observing run number (1)meta.id;obsintJ/AJ/115/193/table3Derived light-curve parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGCVSLink to GCVS datacharStarStar namemeta.id;meta.maincharprimaryRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainAVInterstellar absorption in V bandmagphys.absorptionfloatPer? Adopted perioddtime.perioddoublenullablee_Per? rms uncertainty on Per (99: e_Per>10-3d)1e-05dstat.errorintnullablen_Per[1/3]? Origin of the period (1)meta.noteintnullable<Vmag>? Average V magnitudemagphot.mag;em.opt.VfloatnullableEmax? Epoch (Julian date) at maximum lightdtime.epochdoublenullablee_Emax? rms uncertainty on Emaxdstat.errorfloatnullableNobs? Number of observationsmeta.numberintnullableJ/AJ/115/193/table4Six light-curve templatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPhasePhasetime.phasefloatV1Template 1 V magnitudestat.paramfloatV2Template 2 V magnitudestat.paramfloatV3Template 3 V magnitudestat.paramfloatV4Template 4 V magnitudestat.paramfloatV5Template 5 V magnitudestat.paramfloatV6Template 6 V magnitudestat.paramfloat