J/ApJ/846/115ivo://CDS.VizieR/J/ApJ/846/115doi:10.26093/cds/vizier.18460115CDSTorres G.Lacy C.H.S.Fekel F.C.Wolf M.Muterspaugh M.W.2018-09-25T12:07:57Z2018-06-15T12:30:18ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomyphotometryspectroscopyradial-velocityWe report spectroscopic and differential photometric observations of the A-type system V482 Per, which reveal it to be a rare hierarchical quadruple system containing two eclipsing binaries. One binary has the previously known orbital period of 2.4 days and a circular orbit, and the other a period of 6 days, a slightly eccentric orbit (e=0.11), and shallow eclipses only 2.3% deep. The two binaries revolve around their common center of mass in a highly elongated orbit (e=0.85) with a period of 16.67yr. Radial velocities are measured for all components from our quadruple-lined spectra and are combined with the light curves and measurements of times of minimum light for the 2.4 day binary to solve for the elements of the inner and outer orbits simultaneously. The line-of-sight inclination angles of the three orbits are similar, suggesting they may be close to coplanar. The available observations appear to indicate that the 6 day binary experiences significant retrograde apsidal motion in the amount of about 60 deg per century. We derive absolute masses for the four stars good to better than 1.5%, along with radii with formal errors of 1.1% and 3.5% for the 2.4 day binary and ~9% for the 6 day binary. A comparison of these and other physical properties with current stellar evolution models gives excellent agreement for a metallicity of [Fe/H]=-0.15 and an age of 360Myr.2017ApJ...846..115Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/846/115CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/329 : URAT1 Catalog (Zacharias+ 2015)VI/135 : All-sky spectrally matched Tycho2 stars (Pickles+, 2010)V/149 : LAMOST DR2 catalogs (Luo+, 2016)J/ApJ/469/355 : Teff, B-V and BC relation (Flower, 1996)J/A+A/424/919 : Stellar models grids. Z=0.02, M=0.8 to 125 (Claret, 2004)J/AJ/130/2838 : Velocity and light curves of RW Lac (Lacy+, 2005)J/AJ/133/1209 : Orbits & masses of 14 visual double stars (Docobo+, 2007)J/A+A/463/1061 : UBV photometry of V379 Cep (Harmanec+, 2007)J/other/IBVS/5761 : Minima and maxima of 389 variables (Hubscher+, 2007)J/ApJ/662/602 : Radial velocities of HD 110555 (Torres+, 2007)J/other/IBVS/5874 : Minima and maxima of 299 variables (Hubscher+, 2009)J/other/IBVS/5889 : Minima and maxima of 380 variables (Hubscher+, 2009)J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)J/ApJ/742/123 : Photometry and Velocity of LSPM J1112+7626 (Irwin+, 2011)J/AJ/142/185 : The eclipsing binary stars HY Vir (Lacy+, 2011)J/AJ/145/111 : RVs of 5 spectroscopic binaries (Fekel+, 2013)J/AcA/63/323 : OGLE-III SMC eclipsing binary stars (Pawlak+, 2013)J/MNRAS/437/1216 : VAST Survey. A-type stars multiplicity (De Rosa+, 2014)J/AJ/147/104 : Photom. & velocities of 1SWASP J093010A & B (Koo+, 2014)J/AJ/147/87 : From binaries to multiples. II. (Tokovinin, 2014)J/MNRAS/448/946 : Kepler eclipse timing variations (Borkovits+, 2015)J/MNRAS/455/4136 : Kepler triples (Borkovits+, 2016)J/ApJ/844/103 : Orbit alignment in triple stars (Tokovinin, 2017)J/ApJ/836/177 : RVs and R-band obs. of the EB* V541 Cyg (Torres+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/846/115https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/846/115http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/846/115https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/846/115https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/846/115http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/846/115GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfraredOpticaldefaultJ/ApJ/846/115/table4Heliocentric radial velocity measurements of V482 Per from the Fairborn ObservatoryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[55893.88/57849.64] Heliocentric Julian Date; JD-2400000dtime.epochdoubleHRV-Aa[-149/95]? Heliocentric radial velocity, component Aa (1)km/sspect.dopplerVeloc;pos.heliocentricfloatnullableHRV-Ab[-173.2/123.4]? Heliocentric radial velocity, component Ab (1)km/sspect.dopplerVeloc;pos.heliocentricfloatnullableHRV-Ba[-131/40]? Heliocentric radial velocity, component Ba (1)km/sspect.dopplerVeloc;pos.heliocentricfloatnullableHRV-Bb[-110.1/63]? Heliocentric radial velocity, component Bb (1)km/sspect.dopplerVeloc;pos.heliocentricfloatnullablePhase1? Phase, Aa+Abtime.phasefloatnullablePhase2? Phase, Ba+Bbtime.phasefloatnullableJ/ApJ/846/115/table5Times of minimum light for V482 PerrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[47565.37/57812.37] Heliocentric Julian Date; JD-2400000dtime.epochdoublee_HJD[0/0.006]? Measurement error (1)dstat.error;time.epochdoublenullableType[1/2] 1:primary eclipse or 2:secondary eclipsemeta.codeintO-C[-0.006/0.007] O-C residuals, see section 3dstat.fit.residualdoubleEpoch[1989/2017.2] Epoch of minimum lightyrtime.epochdoubler_Epoch[1/37] References for the times of minimum light (see refs.dat file)meta.refintJ/ApJ/846/115/table2*Differential V-band observations of V482 Per from the NFO WebScoperecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[52250.75/57417.72] Heliocentric Julian Date; JD-2400000dtime.epochdoubledVmag[-0.01/0.7] Differential Bessel V band magnitudemagphot.mag;em.opt.V;arith.difffloatJ/ApJ/846/115/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteintBibCodeBibcodemeta.bib.bibcodecharAuthAuthor(s)meta.bib.authorcharCommCommentmeta.notecharJ/ApJ/846/115/table3Heliocentric radial velocity measurements of V482 Per from CfArecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[55143.80/57794.73] Heliocentric Julian Date; JD-2400000dtime.epochdoubleHRV-Aa[-168/94] Heliocentric radial velocity, component Aakm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV-Aa[1.7/7.2] Uncertainty in HRV-Aakm/sstat.errorfloatHRV-Ab[-200.1/121.1] Heliocentric radial velocity, component Abkm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV-Ab[1.3/5.6] Uncertainty in HRV-Abkm/sstat.errorfloatHRV-Ba[-133/67] Heliocentric radial velocity, component Bakm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV-Ba[0.6/2.8] Uncertainty in HRV-Bakm/sstat.errorfloatHRV-Bb[-111.1/95] Heliocentric radial velocity, component Bbkm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV-Bb[0.6/2.8] Uncertainty in HRV-Bbkm/sstat.errorfloatPhase1Phase, Aa+Abtime.phasefloatPhase2Phase, Ba+Bbtime.phasefloatJ/ApJ/846/115/table1*Differential V-band observations of V482 Per from the URSA WebScoperecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[52250.75/57417.72] Heliocentric Julian Date; JD-2400000dtime.epochdoubledVmag[-0.01/0.7] Differential Bessel V band magnitudemagphot.mag;em.opt.V;arith.difffloat