J/AJ/117/548ivo://CDS.VizieR/J/AJ/117/548doi:10.26093/cds/vizier.51170548CDSHorch E.Ninkov Z.Van Altena W.F.Meyer R.D.Girard T.M.,Timothy J.G.2023-04-06T16:50:34Z2000-12-16T21:49:04ZCDS support team

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

cds-question@unistra.frmultiple-starsTwo hundred seventy-seven position angle and separation measures of 154 double stars are presented. Three of the systems were previously unknown to be double, and 16 other systems were discovered earlier this decade by the Hipparcos satellite. Measures are derived from speckle observations taken with the Wisconsin-Indiana-Yale-NOAO (WIYN) 3.5 m telescope located at Kitt Peak, Arizona. Speckle images were obtained using two different imaging detectors, namely, a multianode microchannel array (MAMA) detector and a fast-readout CCD. A measurement precision study was performed on a sample of binaries with extremely well known orbits by comparing the measures obtained here to the ephemeris predictions. For the CCD, the root mean square (rms) deviation of residuals was found to be 3.5 milliarcseconds (mas) in separation and 12 in position angle, while the residuals of the MAMA data varied depending on the magnification used and seeing conditions but can be comparable or superior to the CCD values. In addition, the two cameras were compared in terms of the detection limit in total magnitude and magnitude difference of the systems under study. The MAMA system has the ability to detect some systems with magnitude differences larger than 3.5, although reliable astrometry could not be obtained on these objects. Reliable astrometry was obtained on a system of magnitude difference of 5.3 with the CCD system.1999AJ....117..548Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/117/548CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/237 : The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)VI/46 : Second catalog of interferometric measurements of binary starsI/236 : The Hipparcos and Tycho Catalogues (ESA 1997)V/39 : 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/117/548https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/117/548http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/117/548https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/117/548https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/117/548http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/117/548GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/117/548/table2Double star speckle measures, CCDNameStar namemeta.id;meta.maincharDiscDiscover designationobs.observercharHD? HD numbermeta.idintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintm_HDMultiple HD number (-N)meta.code.multipcharHIP? HIP numbermeta.idintnullableWDSWDS designation (based on 2000 positions)meta.idcharDate-1900Observation date (minus 1900)yrtime.epochfloatPAPosition angle (positive north to east)degpos.posAngfloatSepSeparationarcsecpos.angDistance;src.orbitalfloatlambdaCenter wavelength of the filter used to make the observationnminstr.filter;em.wl.centralintFWHMFilter passband Full Width at Half-maximumnmspect.line.widthintNote[abcd] Notes related to quadrant (1)meta.notecharn_Name[*] Individual note in notes.dat filemeta.notecharJ/AJ/117/548/table3Double star speckle measures, MAMA (low magnification)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharDiscDiscover designationobs.observercharHD? HD numbermeta.idintnullablem_HDMultiple HD number (-N)meta.code.multipcharHIP? HIP numbermeta.idintnullableWDSWDS designation (based on 2000 positions)meta.idcharDate-1900Observation date (minus 1900)yrtime.epochfloatPAPosition angle (positive north to east)degpos.posAngfloatSepSeparationarcsecpos.angDistance;src.orbitalfloatlambdaCenter wavelength of the filter used to make the observationnminstr.filter;em.wl.centralintFWHMFilter passband Full Width at Half-maximumnmspect.line.widthintNote[abcd] Notes related to quadrant (1)meta.notecharn_Name[*] Individual note in notes.dat filemeta.notecharJ/AJ/117/548/table4Double star speckle measures, MAMA (2.5 x magnification)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharDiscDiscover designationobs.observercharHD? HD numbermeta.idintnullablem_HDMultiple HD number (-N)meta.code.multipcharHIP? HIP numbermeta.idintnullableWDSWDS designation (based on 2000 positions)meta.idcharDate-1900Observation date (minus 1900)yrtime.epochfloatPAPosition angle (positive north to east)degpos.posAngfloatSepSeparationarcsecpos.angDistance;src.orbitalfloatlambdaCenter wavelength of the filter used to make the observationnminstr.filter;em.wl.centralintFWHMFilter passband Full Width at Half-maximumnmspect.line.widthintNote[abcd] Notes related to quadrant (1)meta.notecharn_Name[*] Individual note in notes.dat filemeta.notecharJ/AJ/117/548/notesIndividual notes (tables 2, 3 and 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS designation (based on 2000 positions)meta.idcharNoteText of the notemeta.notecharJ/AJ/117/548/table6Position angle and separation changes since the Hipparcos observation epoch for Hipparcos discovery objectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS designation (based on 2000 positions)meta.idcharDiscDiscover designationobs.observercharHIPHipparcos numbermeta.idintVmagTotal V magnitudemagphot.mag;em.opt.VfloatplxParallaxmaspos.parallax.trigfloatPAHIP position angledegpos.posAngintSepHIP separationarcsecpos.angDistancefloatNmeasMeasure in tablemeta.numberintDPADifference in position angledegpos.posAngintDSepDifference in separationarcsecpos.angDistancefloat