J/AJ/144/7ivo://CDS.VizieR/J/AJ/144/7doi:10.26093/cds/vizier.51440007CDSTokovinin A.Hartung M.Hayward T.L.Makarov V.V.2017-11-06T12:24:10Z2013-08-28T11:32:10ZCDS support team

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

cds-question@unistra.frinfrared-photometryinterferometryspectroscopic-binary-starsproper-motionsstellar-massesradial-velocityA subset of 51 Hipparcos astrometric binaries among FG dwarfs within 67pc has been surveyed with the Near-Infrared Coronagraphic Imager adaptive optics system at Gemini-S, directly resolving for the first time 17 subarcsecond companions and 7 wider ones. Using these data together with published speckle interferometry of 57 stars, we compare the statistics of resolved astrometric companions with those of a simulated binary population. The fraction of resolved companions is slightly lower than expected from binary statistics. About 10% of astrometric companions could be "dark" (white dwarfs and close pairs of late M-dwarfs). To our surprise, several binaries are found with companions too wide to explain the acceleration. Re-analysis of selected intermediate astrometric data shows that some acceleration solutions in the original Hipparcos catalog are spurious.2012AJ....144....7Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/144/7CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2013)V/130 : Geneva-Copenhagen Survey of Solar neighbourhood III (Holmberg+, 2009)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/259 : The Tycho-2 Catalogue (Hog+ 2000)I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)J/AJ/143/42 : Speckle interferometry with SOAR in 2010-11 (Hartkopf+, 2012)J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)J/AJ/139/743 : Speckle interferometry in 2008-09 (Tokovinin+, 2010)J/ApJS/162/207 : Radial velocities of solar-type stars (Abt+, 2006)J/AJ/129/2420 : Proper motion derivatives of binaries (Makarov+, 2005)J/A+A/337/403 : Low-mass stars evolutionary models (Baraffe+ 1998)J/AJ/106/773 : Mass-luminosity relation (Henry+, 1993)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/144/7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/144/7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/144/7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/144/7https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/144/7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/144/7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/144/7/table2 (Summary data on observed astrometric binaries)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/144/7/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/144/7/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/144/7/table2?GETtext/xml+votable180.050000true1.478118618.23500670.005555555555555556Cone search capability for table J/AJ/144/7/table4 (Selected distant Hipparcos stars with large accelerations and significant differences between Tycho-2 and Hipparcos proper motions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/144/7/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/144/7/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/144/7/table4?GETtext/xml+votable180.050000true8.862871424.51770190.0055555555555555566/1024 3279 12295 13196 15656 16394 16723 16971 17006 17223 17273 17308 17513 17523 17637 17991 18133 18480 18744 19230 19310 19385 19874 19942 20107 20489 20517 20729 20997 21061 21142 21198 21531 21661 22074 22887 22990 23094 23396 23438 23515 23539 23575 24003 24736 24902 25229 26749 27431 28184 28455 28696 29327 29609 30083 31264 33214 33308 33378 33629 33738 33755 34040 34142 34152 34338 34541 34583 34599 34671 34810 35088 35189 35191 35201 36001 36074 36098 36350 36379 36446 36986 38565 38598 38790 38918 39709 39893 40000 40146 40739 40802 40893 41935 43556 43655 43989 45182 45397 45535 45605 46024 46117 46255 46511 46717 47483 48176 48581 48599https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/144/7?format=asciiOpticalInfrareddefaultJ/AJ/144/7/table1Measures of companions resolved with Near-Infrared Coronagraphic Imager (NICI)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHIP identifiermeta.id;meta.mainintDateObservation dateyrtime.epoch;obsdoublePA(2.2)Relative position angle (1)degpos.posAngfloatSep(2.2)Relative separation (1)arcsecpos.angDistancefloatDmag(2.2)Relative photometry {Delta}m (1)magphot.mag;arith.difffloatPA(1.6)Relative position angle (2)degpos.posAngfloatSep(1.6)Relative separation (2)arcsecpos.angDistancefloatDmag(1.6)Relative photometry {Delta}m (2)magphot.mag;arith.difffloatRemRemarks (? = uncertain measure)meta.notecharCompComponent (AB or AC)meta.code.multipcharJ/AJ/144/7/table2Summary data on observed astrometric binariesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHIP identifiermeta.id;meta.mainintprimaryMNumber of measures from the Near-Infrared Coronagraphic Imager (NICI) for this star (table1)meta.ref.urlintnullableplxRounded value of Hipparcos (Cat. I/239) parallaxmaspos.parallax.trigintdpmDifference in proper motionmas/yrpos.pm;arith.diffintddpmAcceleration (1)mas.yr**-2phys.accelerationintDRV? Radial velocity amplitude (if the RV variability is found in Nordstroem et al., 2004, Cat. V/117, superseded by Cat. V/130)km/sspect.dopplerVelocfloatnullablen_DRVVariability (-, C or SB) (2)meta.notecharMassStellar mass (see Section 3 for more details)solMassphys.massfloatq? The mass ratio M2/M1 of resolved pairs (see Section 3 for more details)phys.massfloatnullableSep? Separationarcsecpos.angDistancefloatnullablePer? Order-of-magnitude estimates of orbital periods from the third Kepler law (3)yrtime.periodfloatnullableObs1Results of observation with the Near-Infrared Coronagraphic Imager (NICI) (n=unresolved, N=resolved, or -=not observed)meta.codecharObs2Results of speckle observation (s=unresolved, S=resolved, or -=not observed)meta.codecharObs3W=listed as resolved binary in the WDS (B/wds)meta.codecharRemRemarks (4)meta.notecharNote[*] Notes (in notes.dat file)meta.notecharT10Cross-match with Tokovinin et al. (2010, Cat. J/AJ/139/743) within 1.5"meta.ref.urlintnullableWDSCross-match with the WDS catalog (Cat. B/wds) within 1.5"meta.ref.urlintnullableH12Display the results of speckle interferometry from Hartkopf et al. (2012, Cat. J/AJ/143/42)meta.numberintnullableSimbadSimbad column added by the CDSmeta.refchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/AJ/144/7/table4Selected distant Hipparcos stars with large accelerations and significant differences between Tycho-2 and Hipparcos proper motionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHIP identifiermeta.id;meta.mainintplxHipparcos (Cat. I/239) parallaxmaspos.parallax.trigfloatpmRA1Proper motion in right ascension from HIP (Cat. I/239)mas/yrpos.pm;pos.eq.rafloatpmDE1Proper motion in declination from HIP (Cat. I/239)mas/yrpos.pm;pos.eq.decfloatpmRAt2Proper motion in right ascension from Tycho-2 (Cat. I/259)mas/yrpos.pm;pos.eq.rafloatpmDEt2Proper motion in declination from Tycho-2 (Cat. I/259)mas/yrpos.pm;pos.eq.decfloatpmRA2Proper motion in right ascension from HIP2 (Cat. I/311)mas/yrpos.pm;pos.eq.rafloatpmDE2Proper motion in declination from HIP2 (Cat. I/311)mas/yrpos.pm;pos.eq.decfloatddpmAccelerationmas.yr**-2phys.accelerationfloatSigFormal significance of the acceleration (see Section 5 for more details)stat.fit.goodnessfloatTycho-2Display the Tycho-2 Catalogue data (Hog et al., 2000, Cat. I/259meta.ref.urlcharSimbadSimbad column added by the CDSmeta.refchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/AJ/144/7/notesNotesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHIP identifiermeta.id;meta.mainintNoteNotesmeta.note