J/A+A/623/A117ivo://CDS.VizieR/J/A+A/623/A117doi:10.26093/cds/vizier.36230117CDSKervella P.Gallenne A.Evans N.R.Szabados L.Arenou F.Merand A.,Nardetto N.Gieren W.Pietrzynski G.2019-03-25T13:32:53Z2019-03-14T07:57:55ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometryccd-photometryThe multiplicity of Classical Cepheids (CCs) and RR Lyrae stars (RRLs) is still imperfectly known, particularly for RRLs. In order to complement the close-in short orbital period systems presented in Paper I (Kervella et al., 2019, Cat. J/A+A/623/A16), we aim at detecting the wide, spatially resolved companions of the targets of our reference samples of Galactic CCs and RRLs. Angularly resolved common proper motion pairs are detected using a simple progressive selection algorithm to separate the most probable candidate companions from the unrelated field stars. We detect 27 resolved, high probability gravitationally bound systems with CCs out of 456 examined stars, and one unbound star embedded in the circumstellar dusty nebula of the long-period Cepheid RS Pup. We find 7 spatially resolved, probable bound systems with RRL primaries out of 789 investigated stars, and 22 additional candidate pairs. We report in particular new companions of three bright RRLs: OV And (companion of F4V spectral type), RR Leo (M0V) and SS Oct (K2V). In addition, we discovered resolved companions of 14 stars of various variability classes that were misclassified as RRLs. The detection of resolved common proper motion companions around CCs and RRLs facilitates the validation of their GDR2 parallaxes. The possibility to conduct a detailed analysis of the resolved coeval companions of CCs and old population RRLs will also be valuable to progress on our understanding of their evolutionary path.2019A&A...623A.117Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/623/A117CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/A+A/623/A116 : Galactic Cepheids & RR Lyrae multiplicity. I (Kervella+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/623/A117https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/623/A117http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/623/A117https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/623/A117https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/623/A117http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/623/A117GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/623/A117/cepheids (Cepheids with Near or Bound companions (table A1 and A2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/623/A117/cepheids?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/623/A117/cepheids?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/623/A117/cepheids?GETtext/xml+votable180.050000true284.5614461082417.360873709560.005555555555555556Cone search capability for table J/A+A/623/A117/rrlyrae (RR Lyrae stars with Near or Bound companions (table B1 and B2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/623/A117/rrlyrae?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/623/A117/rrlyrae?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/623/A117/rrlyrae?GETtext/xml+votable180.050000true5.1841468358840.827967618420.0055555555555555566/1239 1985 2703 3309 4095 4479 9845 12829 13308 13961 14009 14217 14260 14295 14303 14436 14468 14640 14689 14718 14729 14807 15633 21632 21907 22219 22804 23769 28692 28700 28739 28754 28768 28771 28778 28802 28864 28893 28991 29081 29104 29110 29192 29342 29376 29533 29665 29869 30128 30223 30262 30646 32074 32888 33094 37235 37332 37334 37721 37741 37870 37903 37938 38024 38026 39410 39771 41383 41385 41433 41461 41466 41556 41673 41697 41722 41737 41761 41810 41813 42153 42155 42310 42352 42834 42838 42840 42843-42844 43013 43022 43057 44296 45086 475648.157980699529898e-21 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/623/A117?format=asciidefaultJ/A+A/623/A117/cepheidsCepheids with Near or Bound companions (table A1 and A2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid name or companion Gaia DR2 namemeta.id;meta.maincharn_Name[*] Note on Name (1)meta.notecharcatg[TNBU] Category (2)meta.codecharRA_ICRSBarycentric right ascension (ICRS) at epoch 2015.5 from Gaia DR2degpos.eq.ra;meta.maine_RA_ICRSStandard error of right ascension (e_RA*cosDE)masstat.error;pos.eq.rafloatDE_ICRSBarycentric declination (ICRS) at epoch 2015.5 from Gaia DR2degpos.eq.dec;meta.maine_DE_ICRSStandard error of declinationmasstat.error;pos.eq.decfloatPrimaryCommon name of primary starmeta.id.parentcharPlxAsmAssumed parallax valuemaspos.parallax.trigfloatPlx? Gaia DR2 parallax (corrected for zero point)maspos.parallaxfloatnullablee_Plx? Standard error on Gaia DR2 parallaxmasstat.error;pos.parallaxfloatnullableSep? Projected separation from primaryarcsecpos.angDistance;src.orbitalfloatnullableLinsep? Projected linear separation from primarykaupos.angDistancefloatnullablepmRA? Proper motion in right ascension direction (pmRA*cosDE)mas/yrpos.pm;pos.eq.rafloatnullablee_pmRA? Standard error of proper motion in right ascension directionmas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE? Proper motion in declination directionmas/yrpos.pm;pos.eq.decfloatnullablee_pmDE? Standard error of proper motion in declination directionmas/yrstat.error;pos.pm;pos.eq.decfloatnullabler_pmRASource of proper motion (3)meta.ref;pos.pm;pos.eq.rachardvtan? Differential tangential velocity with respect to primary starkm/sphys.veloc.transversefloatnullablee_dvtan? Standard error on differential tangential velocity with respect to primary starkm/sstat.errorfloatnullablevesc? Escape velocity from primary at projected separationkm/sphys.veloc.escapefloatnullableBPmag? Integrated Gaia DR2 BP mean magnitudemagphot.mag;em.opt.BfloatnullableGmag? Integrated Gaia DR2 G mean magnitudemagphot.mag;em.optfloatnullableRPmag? Integrated Gaia DR2 RP mean magnitudemagphot.mag;em.opt.RfloatnullableJmag? 2MASS J band magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H band magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS K band magnitudemagphot.mag;em.IR.KfloatnullableW1mag? WISE W1 band magnitudemagphot.mag;em.IR.3-4umfloatnullableW2mag? WISE W2 band magnitudemagphot.mag;em.IR.4-8umfloatnullableW3mag? WISE W3 band magnitudemagphot.flux.density;em.IR.8-15umfloatnullableW4mag? WISE W4 band magnitudemagphot.flux.density;em.IR.15-30umfloatnullableE(B-V)? E(B-V) color excessmagphot.color.excessfloatnullableGMAG? Absolute G band magnitudemagphys.magAbs;em.opt.BfloatnullablelogTeff? Log10 of effective temperature (K)log(K)phys.temperature.effectivefloatnullableRRtypeRR lyrae variable subtype, for rrlyrae.datmeta.notecharFileName1Finding chart, in pdf, in subdirectory figuresmeta.notecharFileName2Zoomed finding chart, in pdf, in subdirectory figuresmeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedJ/A+A/623/A117/rrlyraeRR Lyrae stars with Near or Bound companions (table B1 and B2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid name or companion Gaia DR2 namemeta.id;meta.maincharn_Name[*] Note on Name (1)meta.notecharcatg[TNBU] Category (2)meta.codecharRA_ICRSBarycentric right ascension (ICRS) at epoch 2015.5 from Gaia DR2degpos.eq.ra;meta.maine_RA_ICRSStandard error of right ascension (e_RA*cosDE)masstat.error;pos.eq.rafloatDE_ICRSBarycentric declination (ICRS) at epoch 2015.5 from Gaia DR2degpos.eq.dec;meta.maine_DE_ICRSStandard error of declinationmasstat.error;pos.eq.decfloatPrimaryCommon name of primary starmeta.id.parentcharPlxAsmAssumed parallax valuemaspos.parallax.trigfloatPlx? Gaia DR2 parallax (corrected for zero point)maspos.parallaxfloatnullablee_Plx? Standard error on Gaia DR2 parallaxmasstat.error;pos.parallaxfloatnullableSep? Projected separation from primaryarcsecpos.angDistance;src.orbitalfloatnullableLinsep? Projected linear separation from primarykaupos.angDistancefloatnullablepmRA? Proper motion in right ascension direction (pmRA*cosDE)mas/yrpos.pm;pos.eq.rafloatnullablee_pmRA? Standard error of proper motion in right ascension directionmas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE? Proper motion in declination directionmas/yrpos.pm;pos.eq.decfloatnullablee_pmDE? Standard error of proper motion in declination directionmas/yrstat.error;pos.pm;pos.eq.decfloatnullabler_pmRASource of proper motion (3)meta.ref;pos.pm;pos.eq.rachardvtan? Differential tangential velocity with respect to primary starkm/sphys.veloc.transversefloatnullablee_dvtan? Standard error on differential tangential velocity with respect to primary starkm/sstat.errorfloatnullablevesc? Escape velocity from primary at projected separationkm/sphys.veloc.escapefloatnullableBPmag? Integrated Gaia DR2 BP mean magnitudemagphot.mag;em.opt.BfloatnullableGmag? Integrated Gaia DR2 G mean magnitudemagphot.mag;em.optfloatnullableRPmag? Integrated Gaia DR2 RP mean magnitudemagphot.mag;em.opt.RfloatnullableJmag? 2MASS J band magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H band magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS K band magnitudemagphot.mag;em.IR.KfloatnullableW1mag? WISE W1 band magnitudemagphot.mag;em.IR.3-4umfloatnullableW2mag? WISE W2 band magnitudemagphot.mag;em.IR.4-8umfloatnullableW3mag? WISE W3 band magnitudemagphot.flux.density;em.IR.8-15umfloatnullableW4mag? WISE W4 band magnitudemagphot.flux.density;em.IR.15-30umfloatnullableE(B-V)? E(B-V) color excessmagphot.color.excessfloatnullableGMAG? Absolute G band magnitudemagphys.magAbs;em.opt.BfloatnullablelogTeff? Log10 of effective temperature (K)log(K)phys.temperature.effectivefloatnullableRRtypeRR lyrae variable subtype, for rrlyrae.datmeta.notecharFileName1Finding chart, in pdf, in subdirectory figuresmeta.notecharFileName2Zoomed finding chart, in pdf, in subdirectory figuresmeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexed