J/MNRAS/481/5307ivo://CDS.VizieR/J/MNRAS/481/5307doi:10.26093/cds/vizier.74815307CDSGuerrero C.A.Souza T.B.Campos R.P.Borges Fernandes M.,Campagnolo J.C.N.2024-08-19T20:14:25Z2022-07-08T07:26:45ZCDS support team

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

cds-question@unistra.frinterferometrymultiple-starsIn this paper we present the first speckle interferometric measurements of binary stars performed at the Observatorio do Pico dos Dias of the Laboratorio Nacional de Astrofisica in Brazil, using the 1.60m Perkin-Elmer telescope. In order to carry out these observations, we had to perform an opto-mechanical modification to Camera 1 of the 1.6 m to meet the specifications of the observational programme. We focused our efforts on objects from the Washington Double Star Catalogue that were obtained during four observing runs allocated in 2017 and 2018. Among these objects, we have been interested in performing a follow-up observation of double stars discovered by the Hipparcos mission. We report here 464 astrometric measurements of 139 pairs, with angular separations ranging from 0.09 to 6.36arcsec, including 361 systems with separations smaller than 1arcsec. We estimated a mean error in separation of 15mas and 1.2deg in position angle. We confirmed 15 double stars discovered by Hipparcos, as well as four new pairs observed in previously known binaries turning them into triple systems, three of which have separations smaller than 0.16arcsec. With these observations we introduce a new instrument to the astronomical community available at the Observatorio do Pico dos Dias, capable of identifying relatively bright binaries, with angular separation very close to the resolution power of the telescope.2018MNRAS.481.5307Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/481/5307CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/481/5307https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/481/5307http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/481/5307https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/481/5307https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/481/5307http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/481/5307GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/481/5307/table3 (Multi-band astrometry of known pairs observed with the 1.60m telescope)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/481/5307/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/481/5307/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/481/5307/table3?GETtext/xml+votable180.050000true1.5548333-1.88716670.0055555555555555566/4184 4942 16506 17251 17399 17422 17875 17955 18135 24790 24797 24805 24813 24828 24855 24879 24882 24886 24893 24896 24902 24904-24905 24910 24967 24969 24971 24975 24986 25024 25109-25110 25153 25156-25157 25166 25184-25185 25217 25219 25250 27822 29313 33436 34947 35257 35442 35600 35690 35791 35808 35856 35971 36056 36066 36151 36738 37886 38558 38855 38889 38893 38895-38896 38908 40221 40235 40255 40271 40276 40322 40337 40339 40344-40345 42988 43996 43998 44009 44011-44013 44018 44245 44265 44352 44361 44378 44388 44436 44565 44568 44570 44573 44585-44586 44588 44590 44596-44597 44600-44601 44607 44611-44612 44614 44631 44650 44683 44688-44689 44698 44704https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/481/5307?format=asciidefaultJ/MNRAS/481/5307/table3Multi-band astrometry of known pairs observed with the 1.60m telescopeSimbadNameSimbad column added by the CDSmeta.idcharnullablee_PAError on PAdegstat.errorfloatf_NameFlag on Name (1)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameEpoch J2000 coordinates in the format used by the WDS (HHMMm+DDMM)meta.id;meta.maincharONameDiscoverer designationmeta.idcharEpochEpoch of the observation in fractional Besselian years Ep-2000yrtime.epochfloatPAPosition angledegpos.posAngfloatSepAngular separationarcsecpos.angDistancefloate_SepError on Separcsecstat.errorfloatDPA? Difference between our observed position angle and the ephemeris calculated for the date of observationdegpos.posAng;arith.difffloatnullableDSep? Difference between our observed angular separation and the ephemeris calculated for the date of observationarcsecpos.angDistance;arith.difffloatnullableRef? Reference for the publications in which the orbital elements can be found (2)meta.ref;pos.framecharLambdaCentral wavelength for each particular detectionnmem.wl.centralint_RAPositions from Simbad or WDS (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad or WDS (declination part)degpos.eq.dec;meta.main