J/AJ/154/129ivo://CDS.VizieR/J/AJ/154/129doi:10.26093/cds/vizier.51540129CDSNaud M.-E.Artigau E.Doyon R.Malo L.Gagne J.Lafreniere D.,Wolf C.Magnier E.A.2018-08-22T07:58:34Z2018-07-09T11:15:47ZCDS support team

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

cds-question@unistra.frstellar-associationsmultiple-starsstellar-agesproper-motionsinfrared-photometrystellar-distanceradial-velocityvisible-astronomybroad-band-photometrystellar-massessurveysWe present the results of a direct imaging survey for very large separation (>100 AU), low-mass companions around 95 nearby young K5-L5 stars and brown dwarfs. They are high-likelihood candidates or confirmed members of the young (~<150 Myr) {beta} Pictoris and AB Doradus moving groups (ABDMG) and the TW Hya, Tucana-Horologium, Columba, Carina, and Argus associations. Images in i' and z' filters were obtained with the Gemini Multi-Object Spectrograph (GMOS) on Gemini South to search for companions down to an apparent magnitude of z'~22-24 at separations >~20" from the targets and in the remainder of the wide 5.5'x5.5' GMOS field of view. This allowed us to probe the most distant region where planetary-mass companions could be gravitationally bound to the targets. This region was left largely unstudied by past high-contrast imaging surveys, which probed much closer-in separations. This survey led to the discovery of a planetary-mass (9-13 M_Jup_) companion at 2000 AU from the M3V star GU Psc, a highly probable member of ABDMG. No other substellar companions were identified. These results allowed us to constrain the frequency of distant planetary-mass companions (5-13 M_Jup_) to 0.84_-0.66_^+6.73^% (95% confidence) at semimajor axes between 500 and 5000 AU around young K5-L5 stars and brown dwarfs. This is consistent with other studies suggesting that gravitationally bound planetary-mass companions at wide separations from low-mass stars are relatively rare.2017AJ....154..129Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/129CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/297 : NOMAD Catalog (Zacharias+ 2005)III/252 : Pulkovo radial velocities for 35493 HIP stars (Gontcharov, 2006)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/317 : The PPMXL Catalog (Roeser+ 2010)I/322 : UCAC4 Catalogue (Zacharias+, 2012)II/311 : WISE All-Sky Data Release (Cutri+ 2012)V/137 : Extended Hipparcos Compilation (XHIP) (Anderson+, 2012)J/AJ/126/2421 : 2MASS-Selected sample of ultracool dwarfs (Cruz+, 2003)J/A+A/460/695 : Search for Associations Containing Young starsJ/AJ/132/866 : New M dwarfs in solar neighborhood (Riaz+, 2006)J/AJ/133/439 : Luminosity function of M7-L8 ultracool dwarfs (Cruz+, 2007)J/AJ/133/2258 : Activity and kinematics of ultracool dwarfs (Schmidt+, 2007)J/AJ/140/119 : {beta}Pic and AB Dor moving groups membersJ/ApJS/190/100 : NIR proper motion survey using 2MASS (Kirkpatrick+, 2010)J/MNRAS/403/1949 : UBV(RcIc)JHK photometry of HIP nearby stars (Koen+, 2010)J/AJ/143/80 : R Low-mass stars of beta Pic and AB Dor groupsJ/ApJ/752/56 : BDKP. III. Parallaxes for 70 ultracool dwarfsJ/ApJ/754/44 : The AstraLux Large M-dwarf Survey (Janson+ 2012)J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012)J/ApJ/762/88 : Young stellar kinematic group candidate membersJ/AJ/147/85 : Solar neighborhood. XXXIII. 45 M dwarfs (Riedel+, 2014)J/ApJ/783/121 : BANYAN II. Nearby young assoc. candidate membersJ/ApJ/788/81 : BANYAN III. RVel and rotation of low-mass starsJ/ApJS/216/7 : Planets Around Low-Mass Stars (PALMS). IV. (Bowler+, 2015)J/ApJS/219/33 : BANYAN. VII. Candidate YMG members from BASS (Gagne+, 2015)J/ApJS/225/10 : Kinematic analysis of M7-L8 dwarfs (Faherty+, 2016)J/AJ/154/69 : ACRONYM II. The {beta} Pictoris Moving Grouphttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/129https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/129http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/129https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/154/129https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/154/129http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/154/129GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/154/129/catalog (Target properties (table 1) , ages and distances (table 2) and 5{sigma} detection limits (table 5))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/154/129/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/129/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/129/catalog?GETtext/xml+votable180.050000true1.012-64.17660.0055555555555555566/483 16719 16993 17588 17606 18740 19163 19782 20507 20591 20602 20624 21031 21090 21199 21202 21296 21377 21420 22535 22647 22739 22857 22950 22964 24644 24843 27392 29357 32847 32868 33065 33129 33167 33374 33449 33493 33520 33545 33667 33702 33706 33937 33956 33996 34058 34127 34196 34417 34824 34866 35112 35131 35147 35202 35387 35640 35847 35887 36778 36909 37418 37560 37690 38193 38213 38289 38487 41117 41184 41601 41854 42176 42729 43665 45108 45238 45366 45378 45389 45770 46082 46207 46236 46456 46629 46692 47249 47941 47943 47979 48318 48553 48648 491353.830199579824256e-20 2.3459268010196993e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/154/129?format=asciiInfraredOpticaldefaultJ/AJ/154/129/table4Summary of individual target observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identifier (JHHMMSSss+DDMMSSs)meta.id;meta.maincharFilt[iz] Filtermeta.id;instr.filtercharDate1First UT date of observationtime.epoch;obsnullableDate2Second UT date of observationtime.epoch;obsnullableNexp[2/7] Number of exposuresmeta.numberintCond[phot lc] Observing condition (1)meta.notecharFWHM[0.5/1.6] Full width at half maximumarcsecspect.line.widthfloatZpt[25.2/27.07] Photometric zeropointmagphot.magfloate_Zpt[0.01/0.25] Uncertainty in Zptmagstat.errorfloatZpt-srcSource of the zeropoint (2)meta.codecharJ/AJ/154/129/catalogTarget properties (table 1) , ages and distances (table 2) and 5{sigma} detection limits (table 5)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identifier (JHHMMSSss+DDMMSSs)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainpmRA[-603.8/320.4] Proper motion along RA ({mu}_{alpha}_*cos{delta})mas/yrpos.pm;pos.eq.rafloate_pmRA[0.3/17.9] Uncertainty in pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDE[-728.9/340.9] Proper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDE[0.3/26.7] Uncertainty in pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatr_pmReference for proper motion vectors (1)meta.ref;pos.framecharSpTypeSpectral type (2)src.spTyper_SpTypeReference for SpType (3)meta.ref;pos.framecharImag[7.39/14.13]? I band magnitudemagphot.mag;em.opt.Ifloatnullabler_ImagReference for Imag (3)meta.ref;pos.framecharJmag[6.18/15.79] 2MASS J band magnitudemagphot.mag;em.IR.JfloatHmag[5.61/14.83] 2MASS H band magnitudemagphot.mag;em.IR.HfloatKsmag[5.31/14.01] 2MASS K_s_ band magnitudemagphot.mag;em.IR.KfloatW1mag[5.18/13.41] WISE W1 band magnitudemagphot.mag;em.IR.3-4umfloatW2mag[4.87/12.96] WISE W2 band magnitudemagphot.mag;em.IR.4-8umfloatDist[7.07/48.3]? Trigonometric distancepcpos.distance;pos.heliocentricfloatnullablee_Dist[0.03/15.4]? Uncertainty in Distpcstat.errorfloatnullabler_DistReference for Dist (3)meta.ref;pos.framecharRV[-15.1/41.3]? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RV[0/4.1]? Uncertainty in RVkm/sstat.errorfloatnullabler_RVReference for RV (3)meta.ref;pos.framecharStatusStatus (1)meta.codecharb_Age[3/200] Adopted age range, lower valueMyrtime.age;stat.minintB_Age[12/10000] Adopted age range, upper valueMyrtime.age;stat.maxintAge-consAge constraint(s) (2)meta.codecharb_Dist[7/88] Adopted distance, lower valuepcpos.distance;stat.minintB_Dist[7/107] Adopted distance, upper valuepcpos.distance;stat.maxintDist-srcDistance source(s) (2)meta.bibcharb_Sep[2/71] Projected separation, lower valuearcsecpos.angDistance;stat.minintB_Sep[98/177] Projected separation, upper valuearcsecpos.angDistance;stat.maxintb_SepAU[103/2472] Projected separation in AU, lower value (1)AUpos.angDistance;stat.minintB_SepAU[1041/15464] Projected separation in AU, upper value (1)AUpos.angDistance;stat.maxintzmag[21.5/23.9] z band apparent magnitude limitmagphot.mag;em.opt.Ifloatb_zMag[17.9/23.9] Absolute z band magnitude, lower value (2)magphys.magAbs;stat.minfloatB_zMag[18.1/23.9] Absolute z band magnitude, upper value (2)magphys.magAbs;stat.maxfloatb_Mass[2.1/10.6]? Mass interval, lower value (3)(1.898187x10+27kg)phys.mass;stat.minfloatnullableB_Mass[2.5/28.9]? Mass interval, upper value (3)(1.898187x10+27kg)phys.mass;stat.maxfloatnullablel_Massmax[<] Limit flag on Massmaxmeta.code.errorcharMassmax[2.3/3.2]? Upper limit value of mass (3)(1.898187x10+27kg)phys.massfloatnullable2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar