J/MNRAS/428/1442ivo://CDS.VizieR/J/MNRAS/428/1442doi:10.26093/cds/vizier.74281442CDSSkarka M.Zejda M.2024-07-19T20:17:21Z2014-02-18T15:28:22ZCDS support team

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

cds-question@unistra.frvariable-starsphotometryThis study investigates periodic modulation of the light curve of the RRc star TV Boo and its physical parameters based on photometric data. This phenomenon, known as the Blazhko effect, is quite rare among RRc stars. The frequency analysis based on the data gathered at the Masaryk University Observatory (MUO) and also using SuperWASP data revealed symmetrically structured peaks around the main pulsation frequency and its harmonics, which indicate two modulation components of the Blazhko period. The main modulation periodicity was found to be 9.7374+/-0.0054d. This is one of the shortest known Blazhko periods among RRc stars. The second modulation period (21.5+/-0.2d) causes changes of the Blazhko effect itself. Some indices show that TV Boo could be affected by long-term changes of the order of years. Basic physical parameters were estimated via an MUO V light-curve solution using Fourier parameters. TV Boo seems to be a low-metallicity star with [Fe/H]=-1.89.2013MNRAS.428.1442Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/428/1442CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/549/A101 : Known Galactic field Blazhko stars (Skarka, 2013)J/MNRAS/411/1585 : CZ Lac multiperiodic Blazhko modulation (Sodor+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/428/1442https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/428/1442http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/428/1442https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/428/1442https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/428/1442http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/428/1442GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/MNRAS/428/1442/table2Masaryk University Observatory (MUP) V data from seasons 2009-2011VmagMUO V magnitudemagphot.mag;em.opt.VfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHelicentric Julian datedtime.epochdouble