J/MNRAS/474/4322ivo://CDS.VizieR/J/MNRAS/474/4322doi:10.26093/cds/vizier.74744322CDSMurphy S.J.Moe M.Kurtz D.W.Bedding T.Shibahashi H.Boffin H.M.J.2024-08-18T20:17:31Z2018-01-10T07:51:13ZCDS support team

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

cds-question@unistra.frmultiple-starsvariable-starsThe orbital parameters of binaries at intermediate periods (10^2^-10^3^d) are difficult to measure with conventional methods and are very incomplete. We have undertaken a new survey, applying our pulsation timing method to Kepler light curves of 2224 main-sequence A/F stars and found 341 non-eclipsing binaries. We calculate the orbital parameters for 317 PB1 systems (single-pulsator binaries) and 24 PB2s (double-pulsators), tripling the number of intermediate-mass binaries with full orbital solutions. The method reaches down to small mass ratios q~0.02 and yields a highly homogeneous sample. We parametrize the mass-ratio distribution using both inversion and MCMC forward-modelling techniques, and find it to be skewed towards low-mass companions, peaking at q~0.2. While solar-type primaries exhibit a brown dwarf desert across short and intermediate periods, we find a small but statistically significant (2.6{sigma}) population of extreme-mass-ratio companions (q<0.1}) to our intermediate-mass primaries. Across periods of 100-1500d and at q>0.1, we measure the binary fraction of current A/F primaries to be 15.4%+/-1.4%, though we find that a large fraction of the companions (21%+/-6%) are white dwarfs in post-mass-transfer systems with primaries that are now blue stragglers, some of which are the progenitors of Type Ia supernovae, barium stars, symbiotics, and related phenomena. Excluding these white dwarfs, we determine the binary fraction of original A/F primaries to be 13.9%+/-2.1% over the same parameter space. Combining our measurements with those in the literature, we find the binary fraction across these periods is a constant 5% for primaries M_1_<0.8M_{sun}_, but then increases linearly with logM_1_, demonstrating that natal discs around more massive protostars M_1_>~1M_{sun}_} become increasingly more prone to fragmentation. Finally, we find the eccentricity distribution of the main-sequence pairs to be much less eccentric than the thermal distribution.2018MNRAS.474.4322Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/474/4322CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/474/4322https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/474/4322http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/474/4322https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/474/4322https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/474/4322http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/474/4322GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/474/4322/classes (Pulsation and binary classification of targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/474/4322/classes?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/474/4322/classes?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/474/4322/classes?GETtext/xml+votable180.050000true290.0995246.987178890.005555555555555556Cone search capability for table J/MNRAS/474/4322/orbits1 (Orbits for single-pulsator binaries (table 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/474/4322/orbits1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/474/4322/orbits1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/474/4322/orbits1?GETtext/xml+votable180.050000true286.9451646.905190.005555555555555556Cone search capability for table J/MNRAS/474/4322/orbits2 (Orbits for double-pulsator binaries (table 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/474/4322/orbits2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/474/4322/orbits2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/474/4322/orbits2?GETtext/xml+votable180.050000true300.0218846.906341940.0055555555555555564/922-923 933-935 944-946 5/3645-3647 3683 3704 3706 3729-3731 3760 3788-3789 3792-3793 6/14559 14567 14573 14575 14577-14579 14730-14731 14738 14744 14746-14747 14749-14751 14792 14794-14795 14822 14828 14830-14831 14914-14915 15044-15045 15057 15059-15062 15160-15161 15176-15178 15200 15232https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/474/4322?format=asciidefaultJ/MNRAS/474/4322/classesPulsation and binary classification of targetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKepler Input Catalogue (KIC) numbermeta.id;meta.mainintClass[0-7] Numbered classification (1)meta.code.classchar_RAPositions from KIC (V/133) (right ascension part)degpos.eq.ra;meta.main_DEPositions from KIC (V/133) (declination part)degpos.eq.dec;meta.mainJ/MNRAS/474/4322/orbits1Orbits for single-pulsator binaries (table 2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClassClassmeta.ref.urlcharKICKepler Input Catalogue (KIC) numbermeta.id;meta.mainintm_KIC[ab] Multiplicity index on KICmeta.code.multipcharPOrbital perioddtime.perioddoubleE_POrbital period uncertainty (pos) (1)dstat.error;stat.maxdoublee_POrbital period uncertainty (neg) (1)dstat.errorfloata1Projected semi-major axis of primarysphys.angSize;srcfloatE_a1Projected semi-major axis uncertainty (pos) (1)sstat.error;stat.maxfloate_a1Projected semi-major axis uncertainty (neg) (1)sstat.errorfloateEccentricitysrc.orbital.eccentricityfloatE_eEccentricity uncertainty (pos) (1)stat.error;stat.maxfloate_eEccentricity uncertainty (neg) (1)stat.errorfloatwLongitude of periastronradsrc.orbital.periastronfloatE_wLongitude of periastron uncertainty (pos) (1)radstat.error;stat.maxfloate_wLongitude of periastron uncertainty (neg) (1)radstat.errorfloattpTime of periastron passage (BJD) (2)dtime.epochdoubleE_tpTime of periastron passage uncertainty (pos) (1)dstat.error;stat.maxfloate_tpTime of periastron passage uncertainty (neg) (1)dstat.errorfloatfMBinary mass functionsolMassphys.massdoubleE_fMBinary mass function uncertainty (pos) (1)solMassstat.error;stat.maxdoublee_fMBinary mass function uncertainty (neg) (1)solMassstat.errordoubleK1Radial Velocity of primary (3)km/sspect.dopplerVelocfloatE_K1Radial Velocity uncertainty (pos) (1)km/sstat.error;stat.maxfloate_K1Radial Velocity uncertainty (neg) (1)km/sstat.errorfloat_RAPositions from KIC (V/133) (right ascension part)degpos.eq.ra;meta.main_DEPositions from KIC (V/133) (declination part)degpos.eq.dec;meta.mainJ/MNRAS/474/4322/orbits2Orbits for double-pulsator binaries (table 3)a1Projected semi-major axis of primarysphys.angSize;srcfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClassClassmeta.ref.urlcharKICKepler Input Catalogue (KIC) numbermeta.id;meta.mainintPOrbital perioddtime.perioddoubleE_POrbital period uncertainty (pos) (1)dstat.error;stat.maxdoublee_POrbital period uncertainty (neg) (1)dstat.errordoubleE_a1Projected semi-major axis uncertainty (pos) (1)sstat.error;stat.maxfloate_a1Projected semi-major axis uncertainty (neg) (1)sstat.errorfloateEccentricitysrc.orbital.eccentricityfloatE_eEccentricity uncertainty (pos) (1)stat.error;stat.maxfloate_eEccentricity uncertainty (neg) (1)stat.errorfloatwLongitude of periastronradsrc.orbital.periastronfloatE_wLongitude of periastron uncertainty (pos) (1)radstat.error;stat.maxfloate_wLongitude of periastron uncertainty (neg) (1)radstat.errorfloattpTime of periastron passage (BJD) (2)dtime.epochdoubleE_tpTime of periastron passage uncertainty (pos) (1)dstat.error;stat.maxfloate_tpTime of periastron passage uncertainty (neg) (1)dstat.errorfloatfMBinary mass functionsolMassphys.massdoubleE_fMBinary mass function uncertainty (pos) (1)solMassstat.error;stat.maxdoublee_fMBinary mass function uncertainty (neg) (1)solMassstat.errordoubleK1Radial Velocity of primary (3)km/sspect.dopplerVelocfloatE_K1Radial Velocity uncertainty (pos) (1)km/sstat.error;stat.maxfloate_K1Radial Velocity uncertainty (neg) (1)km/sstat.errorfloata2Projected semi-major axis of secondarysphys.angSize;srcfloatE_a2Projected semi-major axis uncertainty (pos) (1)sstat.error;stat.maxfloate_a2Projected semi-major axis uncertainty (neg) (1)sstat.errorfloatqBinary mass ratiophys.massfloatE_qBinary mass ratio uncertainty (pos) (1)stat.error;stat.maxfloate_qBinary mass ratio uncertainty (neg) (1)stat.errorfloat_RAPositions from KIC (V/133) (right ascension part)degpos.eq.ra;meta.main_DEPositions from KIC (V/133) (declination part)degpos.eq.dec;meta.main