J/ApJS/241/6ivo://CDS.VizieR/J/ApJS/241/6doi:10.26093/cds/vizier.22410006CDSChang C.-K.Lin H.-W.Ip W.-H.Chen W.-P.Yeh T.-S.Chambers K.C.,Magnier E.A.Huber M.E.Flewelling H.A.Waters C.Z.Wainscoat R.J.,Schultz A.S.B.2020-04-24T08:50:57Z2019-08-12T11:58:58ZCDS support team

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

cds-question@unistra.frasteroidsvisible-astronomysloan-photometryabsolute-magnitudeA class of asteroids, called large super-fast rotators (large SFRs), have rotation periods shorter than 2hr and diameters larger than ~0.3km. They pose challenges to the usual interior rubble-pile structure unless a relatively high bulk density is assumed. So far, only six large SFRs have been found. Therefore, we present a survey of asteroid rotation periods using the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS) 1 telescope during 2016 October 26-31 to search for more large SFRs and to study their properties. A total of 876 reliable rotation periods are measured, among which seven are large SFRs, thereby increasing the inventory of known large SFRs. These seven newly discovered large SFRs have diverse colors and locations in the main asteroid belt, suggesting that the taxonomic tendency and the location preference in the inner main belt of the six previously known large SFRs could be a bias due to various observational limits. Interestingly, five out of the seven newly discovered large SFRs are mid main-belt asteroids (MBAs). Considering the rare discovery rates of large SFR in the previously similar surveys and the survey condition in this work, the chance of detecting a large SFR in the inner main belt seems to be relatively low. This probably suggests that the inner main belt harbors fewer large SFRs than the mid main belt. From our survey, we also found a drop in the number appearing at f>5rev/day on the spin-rate distribution for the outer MBAs of D<3km, which was reported for the inner and mid main belt by Chang et al. (2015, J/ApJS/219/27 ; 2016ApJ...816...71C).2019ApJS..241....6Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/241/6CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/742/40 : Jovian Trojans asteroids with WISE/NEOWISE (Grav+, 2011)J/ApJ/743/156 : NEOWISE obs. of NEOs: preliminary results (Mainzer+, 2011)J/ApJ/741/68 : Main Belt asteroids with WISE/NEOWISE. I. (Masiero+, 2011)J/ApJ/750/99 : The Pan-STARRS1 photometric system (Tonry+, 2012)J/ApJS/219/27 : Surveys of asteroid rotation periods using iPTF (Chang+, 2015)J/AJ/150/75 : Asteroid light curves from PTF survey (Waszczak+, 2015)J/ApJS/227/20 : Rotation periods of asteroids using iPTF (Chang+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/241/6https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/241/6http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/241/6https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/241/6https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/241/6http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/241/6GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJS/241/6/table3The 876 reliable rotation periodsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCompact object identifier (asteroid number or MPC packed format)meta.idcharf_ID[ab] Flag on ID (1)meta.codecharPlanet[1489/399139]? Asteroid numbermeta.idintnullableNameName or preliminary designationmeta.id;meta.mainchara[1.8/4] Semi-major axisAUphys.size.smajAxisfloate[0.01/0.5] Eccentricitysrc.orbital.eccentricityfloati[0.3/32] Inclinationdegsrc.orbital.inclinationfloatDelta[4.9/8] Mean heliocentric distanceAUpos.distance;pos.heliocentricfloatr[4.9/8] Mean geodesic distanceAUpos.distance;src.orbitalfloatalpha[4.9/8] Mean phase angledegpos.phaseAng;stat.meanfloatDiam[0.2/28.5] Diameterkmphys.size.diameterfloatHMag[11.7/20.5] Absolute magnitudemagphys.magAbs;em.IR.Hfloate_HMag[0.03/0.5] Uncertainty in HMagmagstat.error;phot.mag;em.IR.Hfloatmag[12/22] Apparent magnitude in PS1 w_P1_ filtermagphot.mag;em.optfloate_mag[0/0.2] Uncertainty in magmagstat.error;phot.magfloatPer[0.5/126.4] Derived rotation periodhtime.periodfloate_Per[0/9.3] Uncertainty in Phstat.errorfloatDeltam[0.09/1.5] Light-curve amplitudemagsrc.var.amplitudefloatU[2/3] Rotation period quality code (3=highly reliable; 2=some ambiguity)meta.code.qualinta*[-5.6/3.1]? SDSS color a^*^ (2)phot.colorfloatnullablee_a*[0/0.6]? Uncertainty in a*stat.errorfloatnullablei-z[-2.4/2]? SDSS (i-z) color indexphot.color;em.opt.I;em.opt.Ifloatnullablee_i-z[0/1.4]? Uncertainty in i-zstat.errorfloatnullableTypeSpectral type ("C"=385 occurrences, "S"=248 occurrences or "V"=128 occurrences)src.spTypechar