J/AJ/149/34ivo://CDS.VizieR/J/AJ/149/34doi:10.26093/cds/vizier.51490034CDSLacy C.H.S.Torres G.Fekel F.C.Muterspaugh M.W.Southworth J.2017-06-30T05:49:18Z2015-02-05T14:26:55ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsradial-velocityccd-photometryIM Per is a detached A7 eccentric eclipsing binary star. We have obtained extensive measurements of the light curve (28225 differential magnitude observations) and radial velocity curve (81 spectroscopic observations) which allow us to fit orbits and determine the absolute properties of the components very accurately: masses of 1.7831+/-0.0094 and 1.7741+/-0.0097 solar masses, and radii of 2.409+/-0.018 and 2.366+/-0.017 solar radii. The orbital period is 2.25422694(15) days and the eccentricity is 0.0473(26). A faint third component was detected in the analysis of the light curves, and also directly observed in the spectra. The observed rate of apsidal motion is consistent with theory (U=151.4+/-8.4year). We determine a distance to the system of 566+/-46pc.2015AJ....149...34Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/149/34CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)J/AJ/147/148 : Spectroscopy and photometry of AP And (Lacy+, 2014)J/AJ/147/1 : Spectroscopy and photometry of HP Aur (Lacy+, 2014)J/AJ/145/111 : Radial velocities of five spectroscopic binaries (Fekel+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/149/34https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/149/34http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/149/34https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/149/34https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/149/34http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/149/34GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/149/34/table1Times of eclipse for IM PerRef[1/26] Reference; in refs.dat filemeta.ref;pos.frameintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning sequence numbermeta.id;meta.mainintYear[1950.70/2014.06] YearyrtimedoubleHJDHeliocentric Julian Date (HJD-2400000) (1)dtime.epochdoublee_HJD? Error estimate on HJD (2)dstat.error;time.epochfloatnullableE[-9371/893] Epochmeta.number;time.periodintType[1/2] Eclipse type (1=primary, 2=secondary minima)meta.noteintO-C[-0.003/0.005] The (O-C) residualdstat.fit.residual;stat.fit.omcfloatJ/AJ/149/34/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintprimaryBibCodeBibliographic codemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharJ/AJ/149/34/table3*Heliocentric radial velocities of IM Per from the Fairborn observatoryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2400000)dtime.epochdoubleHRVA[-158/95] Primary heliocentric radial velocity (typical uncertainty of 2.9km/s)km/sstat.error;spect.dopplerVeloc;pos.heliocentricfloatHRVB[-155/95] Secondary heliocentric radial (typical uncertainty of 3.0km/s)km/sstat.error;spect.dopplerVeloc;pos.heliocentricfloatPhase[0/1] Phase (G1)time.phasefloatJ/AJ/149/34/table5*Differential V magnitudes of IM Per from the URSA WebScoperecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2400000)dtime.epoch;obsdoubleDVmag[1.84/2.59] Differential V band magnitude (1)magphot.mag;em.opt.V;arith.difffloatJ/AJ/149/34/table2*Heliocentric radial velocities of IM Per from the CfA spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2400000)dtime.epochdoubleHRVA[-158/91] Primary heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_HRVA[1/11] 1{sigma} error in HRVAkm/sstat.errorfloatHRVB[-156/95] Secondary heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_HRVB[1/7] 1{sigma} error in HRVBkm/sstat.errorfloatPhase[0/1] Phase (G1)time.phasefloatHRVC[-47/-14]? Tertiary heliocentric radial velocity ({sigma} 11km/s for DS and 7km/s for TRES) (1)km/sspect.dopplerVeloc;pos.heliocentricfloatnullableInstInstrument used at the Harvard-Smithsonian Center for Astrophysics (CfA) (1)instr.setupcharJ/AJ/149/34/table6*Differential V Magnitudes of IM Per from the NFO WebScoperecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2400000)dtime.epoch;obsdoubleDVmag[1.84/2.59] Differential V band magnitude (1)magphot.mag;em.opt.V;arith.difffloat