J/A+A/520/A46ivo://CDS.VizieR/J/A+A/520/A46doi:10.26093/cds/vizier.35200046CDSde Boer K.S.Maintz G.2017-12-15T10:54:44Z2010-10-01T13:34:23ZCDS support team

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

cds-question@unistra.frvariable-starsvisible-astronomymedium-band-photometryRR Lyrae stars have been observed to improve the insight into processes at work in their atmospheres. Simultaneous Stroemgren-photometry allows to obtain a rapid sequence of measurements in which photometric indices are unaffected by non-optimum observing conditions. The indices y, b-y, and c1 are used with an established calibration to derive Teff and to determine the gravity, logg_BJ_ from the Balmer jump, throughout the pulsation cycle. By employing the equations for stellar structure, additional parameters can be derived.2010A&A...520A..46Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/520/A46CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/520/A46https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/520/A46http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/520/A46https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/520/A46https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/520/A46http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/520/A46GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/520/A46/stars (Star positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/520/A46/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/520/A46/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/520/A46/stars?GETtext/xml+votable180.050000true109.331.7277780.0055555555555555566/710 1028 1294 1663 2484 4762 4828 6301 6567 6744 22111 222823.5477801948654164e-19 3.7046649840629505e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/520/A46?format=asciiOpticaldefaultJ/A+A/520/A46/starsStar positionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSimbad namemeta.id;meta.maincharRAJ2000Simbad Hour of Right Ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Simbad Degree of Declination (J2000.0)pos.eq.dec;meta.mainPerPerioddtime.perioddoubleBmag? Simbad B band magnitudemagphot.mag;em.opt.BfloatnullableVmag? Simbad V band magnitudemagphot.mag;em.opt.VfloatnullableSpTypeSimbad MK spectral typesrc.spTypecharLCPlot of the light curvesmeta.ref.urlcharSimbadSimbad column added by the CDScharJ/A+A/520/A46/photomCalibrated Stroemgren magnitudes and colour indicesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the variable (GCVS)meta.id;meta.maincharJDTime of observation (1)dtime.epochdoubleymagStroemgren y magnitudemagphot.mag;em.opt.Vfloatb-y? Stroemgren b-y colour index (2)magphot.color;em.opt.B;em.opt.Vfloatnullablev-b? Stroemgren v-b colour index (2)magphot.color;em.opt.B;em.opt.Bfloatnullableu-v? Stroemgren u-v colour index (2)magphot.color;em.opt.U;em.opt.BfloatnullableExpTimeShutter open timestime.epoch;instr.setupfloat