J/AJ/160/175ivo://CDS.VizieR/J/AJ/160/175doi:10.26093/cds/vizier.51600175CDSSamec R.Caton D.Faulkner D.R.Morgan S.2023-12-20T08:19:50Z2020-12-03T08:38:34ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsmultiple-starsdwarf-starsinfrared-photometryvisible-astronomybroad-band-photometryV1023 Per is a polar spotted, but well-detached dwarf binary, very likely a Pre-WUMa eclipsing binary. It was observed on 11 nights in 2015 October, November, and December at Dark Sky Observatory in North Carolina with the 0.81m reflector of Appalachian State University. The period behavior is complex and may be increasing with a cubic or quadratic ephemeris. Its odd light curves are of high amplitude but have no totality and reach maximum light just before and following the secondary eclipse, indicating that it has polar spots similar to UV Leo. The 28yr orbital period study calls the attention of observers to further monitor this binary to understand the complex nature of the period evolution. Its presently fixed polar spot does indicate that it must have a strong magnetic field and that it is synchronously rotating. The BVRcIc simultaneous 2016 Wilson-Devinney program (W-D) solution gives fillouts of 68% and 75% for the primary and secondary components, respectively. The polar position of the spot, its radius (24{deg}), and T-fact (0.75) indicate that a strong magnetic field is present. The small {Delta}T in the components (~289K) show that the stars are similar in spectral type despite them being well detached. The inclination is high, ~85.19{deg}{+/-}0.04{deg}, but there is not a total eclipse due to the high mass ratio (~0.739{+/-}0.001). Due to the low galactic position (longitude=150.390{deg}, latitude=-1.023{deg}), its reddening is addressed. The primary components temperature is estimated to be 5250{+/-}250K.2020AJ....160..175Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/160/175CatalogResearchIsServedByTAP VizieR generic servicerelated-toIV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/ApJ/723/1469 : Flux calibrations and WZ Oph photometry (Wilson+, 2010)J/AJ/141/44 : V396 Mon BVRI light curves (Liu+, 2011)J/A+A/539/A129 : BVRI light curves of 3 eclipsing binaries (Liakos+, 2012)J/AJ/143/34 : SZ Her BVRI light curves (Lee+, 2012)J/AJ/143/99 : Photometry of W UMa eclipsing binaries (Terrell+, 2012)J/AJ/144/37 : BVRI photometry of the eclipsing binary BS Vul (Zhu+, 2012)J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+,2013)J/ApJ/788/41 : BVRI light curve of OGLE LMC-ECL-11893 (Dong+, 2014)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/AJ/149/48 : BVRI light curves of ZZ Eri (Samec+, 2015)J/other/IBVS/6151 : 81th name-list of variable stars. I. (Kazarovets+, 2015)J/AJ/152/199 : BV(RI)c light curves of FF Vul (Samec+, 2016)J/AJ/152/219 : BV(RI)c light curves of DD Indi (Samec+, 2016)J/AJ/154/260 : 3 short-period eclipsing binaries BVRI photom. (Pi+, 2017)J/AJ/157/3 : BVRI light curves of the binary QS Vir (Latkovic+, 2019)J/A+A/642/A108 : PN G283.7-05.1 BVRI and RV curves (Jones+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/160/175https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/160/175http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/160/175https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/160/175https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/160/175http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/160/175GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/160/175/table1B, V, Rc, Ic photometric observations of V1023 PerseirecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFiltFilter used (453 B, 742 Ic, 847 Rc or 599 V)instr.setup;instr.filtercharDmag[-0.36/0.653] Differential magnitude in Filtermagphot.mag;arith.difffloatHJD[14/63] Heliocentric Julian Date, HJD-2457300dtime.epochfloat