J/MNRAS/456/314ivo://CDS.VizieR/J/MNRAS/456/314doi:10.26093/cds/vizier.74560314CDSXiang Y.Gu S.Collier Cameron A.Barnes J.R.Zhang L.2024-08-15T20:17:31Z2020-02-27T08:43:36ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsspectroscopyWe present the first Doppler images of the active eclipsing binary system SZ Psc, based on the high-resolution spectral data sets obtained in 2004 November and 2006 September-December. The least-squares deconvolution technique was applied to derive high signal-to-noise profiles from the observed spectra of SZ Psc. Absorption features contributed by a third component of the system were detected in the LSD profiles at all observed phases. We estimated the mass and period of the third component to be about 0.9 M_{sun}_ and 1283+/-10 d, respectively. After removing the contribution of the third body from the least-squares deconvolved profiles, we derived the surface maps of SZ Psc. The resulting Doppler images indicate significant star-spot activities on the surface of the K subgiant component. The distributions of star-spots are more complex than that revealed by previous photometric studies. The cooler K component exhibited pronounced high-latitude spots as well as numerous low- and intermediate-latitude spot groups during the entire observing seasons, but did not show any large, stable polar cap, different from many other active RS CVn-type binaries.2016MNRAS.456..314Xhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/456/314CatalogResearchIsServedByTAP VizieR generic servicerelated-toV/118 : Catalog of eclipsing binaries parameters (Perevozkina+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/456/314https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/456/314http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/456/314https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/456/314https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/456/314http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/456/314GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/MNRAS/456/314/table1The full version of the observing logrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateUT date of observationtime.epoch;obsnullableHJD[3330.10/4081.12] Heliocentric Julian Date (HJD-2450000)dtime.epochdoubleExp[1500/3600] Exposure timestime.duration;obs.exposureintS/N1[45/149] Peak signal-to-noise ratio of the observed spectrastat.snr;stat.maxintS/N2[621/2039] Signal-to-noise ratio of the corresponding least-squares deconvolution (LSD) profilestat.snr;spect.line.profileint