J/AJ/161/253ivo://CDS.VizieR/J/AJ/161/253doi:10.26093/cds/vizier.51610253CDSGuerrero C.A.Zepeda C.E.Souza T.B.Najera M.R.Fernandes M.B.,Hernandez-Aguila J.B.Carvajal J.C.Castro-Chacon J.H.,Hernandez-Valencia B.Reyes-Ruiz M.Sanchez E.Silva J.S.2022-03-08T08:56:38Z2021-09-07T13:14:20ZCDS support team

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

cds-question@unistra.frmultiple-starsinterferometryastrometryinfrared-photometryvisible-astronomyphotometryIn this paper we present multiband speckle interferometric measurements of double stars performed at the 2.1m telescope of the Observatorio Astronomico Nacional, San Pedro Martir, Mexico. We focused our efforts on objects from the Washington Double Star Catalog that were observed during five runs allocated in 2018 and 2019. We report here 2101 astrometric and 2027 photometric measurements of 631 pairs, with angular separations ranging from 0.05" to 6.09", including 1622 measurements with separations smaller than 1", and a magnitude difference up to 5.99mag through the V filter, 5.46mag for the R filter, and 5.85mag for the I filter. We estimated a mean error in separation of 12mas, 1.1{deg} in position angle, and 0.14mag for the magnitude difference. We confirmed 58 double stars discovered by Hipparcos. For the first time we are presenting astrometric measurements for 7 systems listed at the Washington Double Star Catalog as being suspected binaries, which did not have a secondary confirmation, and 15 stars with only one published measurement. We identified a new close companion with a mean angular separation of 0.10", detected in a previously known pair. Finally, we present a correction to two previously published orbital solutions of two visual binaries.2021AJ....161..253Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/253CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/209 : Catalogue of 2700 double stars (Couteau, 1995)B/wds : The Washington Visual Double Star Catalog (Mason+, 2001-2020)J/AJ/139/205 : 2007-2008 WIYN speckle observations of binaries (Horch+, 2010)J/AJ/141/157 : Speckle interferometry at USNO. XVI. (Mason+, 2011)J/AJ/142/46 : Speckle interferometry at USNO. XVII. (Mason+, 2011)J/AJ/142/56 : Speckle interferometry at the USNO station (Hartkopf+, 2011)J/other/RMxAA/47.211 : Speckle interferometry at OAN. III. (Orlov+, 2011)J/AJ/143/10 : 2008-2009 WIYN speckle observations binaries VII (Horch+, 2012)J/AJ/143/42 : Speckle interferometry with SOAR in 2010&2011 (Hartkopf+, 2012)J/AJ/143/124 : Speckle interferometry at the USNO. XVIII. (Mason+, 2012)J/AJ/144/56 : Speckle interferometry at SOAR in 2012 (Tokovinin+, 2012)J/other/AstBu/67.44 : Speckle interferometry of Ap stars (Balega+, 2012)J/other/RMxAA/48.177 : Speckle interferometry of binaries (Orlov+, 2012)J/AJ/146/56 : Speckle interferometry at the USNO. XIX. (Mason+, 2013)J/AJ/147/123 : Speckle interferometry with SOAR in 2012-2013 (Tokovinin+, 2014)J/other/AstBu/69.296 : Speckle interferometry Ap stars. II. (Rastegaev+, 2014)J/AJ/150/16 : Speckle-interferometry in Melotte 111 (Guerrero+, 2015)J/AJ/150/50 : Speckle interferometry at SOAR in 2014 (Tokovinin+, 2015)J/AJ/150/136 : Speckle interferometry at USNO. XX. (Hartkopf+, 2015)J/AJ/151/153 : Speckle interferometry at SOAR in 2015 (Tokovinin+, 2016)J/AJ/153/20 : Speckle interferometry at USNO. XXI. (Mason+, 2017)J/AJ/154/183 : Speckle interferometry at the USNO. XXII. (Mason+, 2017)J/AJ/155/215 : Speckle interferometry of red dwarf stars (Mason+, 2018)J/AJ/155/235 : Speckle interferometry at SOAR in 2016&2017 (Tokovinin+, 2018)J/MNRAS/475/1725 : Astrometry double stars measured in 2011 (Guerrero+, 2018)J/AJ/156/240 : Speckle interferometry at the USNO. XXIII. (Mason+, 2018)J/AJ/157/211 : Unresolved binaries in TESS with speckle imaging (Matson+, 2019)J/AJ/158/48 : Speckle interferometry at SOAR in 2018 (Tokovinin+, 2019)J/AJ/159/266 : 12 years positional measurements 8 binaries (Mitrofanova+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/161/253https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/161/253http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/161/253https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/161/253https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/161/253http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/161/253GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/161/253/table3Multi-band astrometry of pairs observed with the 2.1m telescopeSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS Designation in the Washington Double Star catalogmeta.id;meta.maincharFlagFlag (1)meta.code.errorDesignDiscoverer Designationmeta.idcharEpoch[18/20] Fractional Julian year of observational epoch, Epoch+2000yrtime.epoch;arith.ratiofloatPA[0/360] Position angle, {theta}degpos.posAngfloate_PA[0/3] Uncertainty in PAdegstat.errorfloatSep[0.05/6.1] Angular separation, {rho}arcsecpos.angDistancefloate_Sep[0/0.5] Uncertainty in Separcsecstat.errorfloatdmag[0/6]? Associated differential magnitudemagphot.mag;arith.difffloatnullableO-Ct[-33/326]? The (O-C) residual in PAdegstat.fit.residualfloatnullableO-Cr[-0.07/0.3]? The (O-C) residual in Separcsecstat.fit.residualfloatnullableRefReference (2)meta.ref;pos.framecharlambda[538/894] Central wavelength of measurementnmem.wl.centralint