J/ApJ/701/1922ivo://CDS.VizieR/J/ApJ/701/1922doi:10.26093/cds/vizier.17011922CDSBower G.C.Bolatto A.Ford E.B.Kalas P.2017-07-10T06:22:05Z2011-10-11T10:11:46ZCDS support team

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

cds-question@unistra.frm-starsradio-continuum-emissionproper-motionsvisible-astronomytrigonometric-parallaxRadio astrometry of nearby, low-mass stars has the potential to be a powerful tool for the discovery and characterization of planetary companions. We present a Very Large Array survey of 172 active M dwarfs at distances of less than 10pc. Twenty-nine stars were detected with flux densities greater than 100uJy. We observed seven of these stars with the Very Long Baseline Array at milliarcsecond resolution in three separate epochs. With a detection threshold of 500uJy in images of sensitivity 1{sigma}~100uJy, we detected three stars three times (GJ 65B, GJ 896A, GJ 4247), one star twice (GJ 285), and one star once (GJ 803). Two stars were undetected (GJ 412B and GJ 1224). For the four stars detected in multiple epochs, residuals from the optically determined apparent motions have an root-mean-square deviation of ~0.2 milliarcseconds, consistent with statistical noise limits. Combined with previous optical astrometry, these residuals provide acceleration upper limits that allow us to exclude planetary companions more massive than 3-6M_Jup_ at a distance of ~1AU with a 99% confidence level.2009ApJ...701.1922Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/701/1922CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/35 : CATALOGUE OF NEARBY STARS AND NEARBY STAR DATA PUBLISHED 1969-78V/70 : Nearby Stars, Preliminary 3rd Version (Gliese+ 1991)J/PASP/122/885 : Gliese catalog star/2MASS cross identifications (Stauffer+,J/A+A/417/651 : NEXXUS ROSAT survey of coronal X-ray (Schmitt+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/701/1922https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/701/1922http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/701/1922https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/701/1922https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/701/1922http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/701/1922GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/701/1922/table1 (Stellar data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/701/1922/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/701/1922/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/701/1922/table1?GETtext/xml+votable180.050000true3.8654167-16.13222220.0055555555555555566/137 527 546 725 811 1122 2737 2923 3345 3791 3969 4158 4444 4693 5000 5420 5534 6672 6726 7264 7512 8023 8123 8440 8790 9125 9339 9585 9696 10149 10303 11636 12454 12679 13451 13688 13743 14266 14515 14772 14993 15311 15602 15960 16041 16502 16758 16827 17058 17186 18440 18450 18496 18666 19466 19777 20071 20100 20459 20896 21136 21149 21953 22040 22148 22289 22309 22645 22709 22807 23564 23735 24227 26327 26521 26538 26560 26583 26699 27201 27392 27462 27731 27762 28343 28548 28646 28664 28955 29458 29684 30505 30771 30833 31019 31087 31781 32229 32335 32645 36511 36526 36614 36697 40505 40941 44226 44284 44696 44921 48274 489853.313034785154005e-24 3.313034785154005e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/701/1922?format=asciiOpticalRadiodefaultJ/ApJ/701/1922/table1Stellar dataGJGliese catalog identificationmeta.id;meta.maincharSpTypeMK spectral typesrc.spTypecharpi? Annual parallaxmaspos.parallaxfloatnullablee_pi? Annual parallax uncertaintymasstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_GJSimbad column added by the CDSmeta.notecharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainePos1? Positional error ellipse (major axis)masstat.errordoublenullableePos2? Positional error ellipse (minor axis)masstat.errordoublenullableePosPA? Positional error ellipse (position angle)degstat.errorintnullablepmRA? Proper motion along RAmas/yrpos.pm;pos.eq.radoublenullablepmDE? Proper motion along DEmas/yrpos.pm;pos.eq.decdoublenullableepm1? Proper motion error ellipse (major axis)mas/yrstat.errorfloatnullableepm2? Proper motion error ellipse (minor axis)mas/yrstat.errorfloatnullableepmPA? Proper motion error ellipse (position angle)degstat.errorintnullableBmag? Apparent B-band magnitudemagphot.mag;em.opt.BfloatnullableVmag? Apparent V-band magnitudemagphot.mag;em.opt.VfloatnullablelogLX? Log of X-ray luminosity in erg/slog(1e-07W)phys.luminosity;em.X-rayfloatnullableSimbadSimbad column added by the CDScharJ/ApJ/701/1922/resultsResults of VLA observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_GJSimbad column added by the CDSmeta.notecharGJGliese catalog identificationmeta.id;meta.maincharEpochEpoch of observationtime.epochnullablel_FluxLimit flag on Fluxmeta.code.error;phot.fluxcharFluxFlux density at 5GHzuJyphot.flux.density;em.radio.3-6GHzinte_Flux? Flux density uncertaintyuJystat.error;phot.fluxintnullable