J/ApJS/243/12ivo://CDS.VizieR/J/ApJS/243/12doi:10.26093/cds/vizier.22430012CDSSchwamb M.E.Fraser W.C.Bannister M.T.Marsset M.Pike R.E.,Kavelaars J.J.Benecchi S.D.Lehner M.J.Wang S.-Y.Thirouin A.,Delsanti A.Peixinho N.Volk K.Alexandersen M.Chen Y.-T.Gladman B.,Gwyn S.D.J.Petit J.-M.2020-04-16T13:29:01Z2020-02-06T13:37:42ZCDS support team

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

cds-question@unistra.frasteroidstwo-color-diagramsinfrared-photometryvisible-astronomyWide-band photometryabsolute-magnitudesurveysThe Colours of the Outer Solar System Origins Survey is acquiring near-simultaneous g, r, and J photometry of unprecedented precision with the Gemini North Telescope, targeting nearly 100 trans-Neptunian objects (TNOs) brighter than m_r_=23.6mag discovered in the Outer Solar System Origins Survey. Combining the optical and near-infrared photometry with the well-characterized detection efficiency of the Colours of the Outer Solar System Origins Survey target sample will provide the first flux-limited compositional dynamical map of the outer solar system. In this paper, we describe our observing strategy and detail the data reduction processes we employ, including techniques to mitigate the impact of rotational variability. We present optical and near-infrared colors for 35 TNOs. We find two taxonomic groups for the dynamically excited TNOs, the neutral and red classes, which divide at g-r~0.75. Based on simple albedo and orbital distribution assumptions, we find that the neutral class outnumbers the red class, with a ratio of 4:1 and potentially as high as 11:1. Including in our analysis constraints from the cold classical objects, which are known to exhibit unique albedos and r-z colors, we find that within our measurement uncertainty our observations are consistent with the primordial solar system protoplanetesimal disk being neutral class dominated, with two major compositional divisions in grJ color space.2019ApJS..243...12Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/243/12CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/astorb : Orbits of Minor Planets (Bowell+ 2014)J/AJ/130/873 : Properties of BQS objects in the SDSS DR3 area (Jester+, 2005)J/AJ/135/55 : NIR spectra of Centaurs & Kuiper Belt objects (Barkume+, 2008)J/A+A/505/1283 : (84922) 2003 VS2 differential light curve (Duffard+, 2009)J/A+A/546/A115 : Colors of minor bodies in outer solar system (Hainaut+, 2012)J/A+A/546/A86 : R absolute magnitudes of Kuiper Belt objects (Peixinho+, 2012)J/ApJ/750/99 : The Pan-STARRS1 photometric system (Tonry+, 2012)J/A+A/577/A35 : Visible colors of Centaurs and KBOs (Peixinho+, 2015)J/AJ/152/70 : Outer Solar System Origins Survey (OSSOS) (Bannister+, 2016)J/AJ/152/221 : New extreme trans-Neptunian objects (Sheppard+, 2016)J/AJ/157/94 : Col-OSSOS: outer solar system objects data (Marsset+, 2019)J/AJ/157/120 : TNOs & Centaurs observed within the DES (Banda-Huarca+, 2019)J/AJ/157/228 : Cold Classical TNOs: LCs + rotational data (Thirouin+, 2019)http://archive.gemini.edu/ : Gemini Observatory Archive search pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/243/12https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/243/12http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/243/12https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/243/12https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/243/12http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/243/12GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapAssociated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/ApJS/243/122.85864675833786e-19 3.5010283109654867e-19OpticalInfrareddefaultJ/ApJS/243/12/table1Orbital parameters and optical and near-infrared colors of the o3l and o4h Col-OSSOS trans-Neptunian object (TNO) sampleLCInteractive Plotmeta.ref.urlcharFlagSource flag(s) (2)meta.code.errorcharMPCMPC designation (1)meta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNfNumber of magnitude measurements for this TNO (link to Table 3)meta.numberintnullableOSSOSOSSOS survey designation (3)meta.idchara[23.2/130] Orbital semi-major axisauphys.angSize.smajAxis;src.orbitalfloate[0.01/0.8] Orbital eccentricitysrc.orbital.eccentricityfloati[0.7/29.6] Orbital inclinationdegsrc.orbital.inclinationfloatDelta[15.6/49.7] Geocentric distance, {Delta} (4)aupos.distance;pos.geocentricfloatrh[16.3/50.5] Heliocentric distance (4)aupos.distance;pos.heliocentricfloatrmag[22.3/24.2] Mean SDSS r band magnitude (5)magphot.mag;em.opt.Rfloate_rmag[0/0.3] Uncertainty in rmagmagstat.error;phot.mag;em.opt.RfloatHrMag[5.8/11.4] Absolute magnitude H in Flt (Hr)magphys.magAbs;em.IR.HfloatClassOrbital classification (6)src.classchar(g-r)[0.5/1.1] SDSS g-r color indexmagphot.color;em.opt.B;em.opt.Rfloate_(g-r)[0.01/0.04] Uncertainty in (g-r)magstat.errorfloat(r-J)[0.9/2] SDSS r band - MKO J band color indexmagphot.color;em.opt.R;em.IR.Jfloate_(r-J)[0.04/0.2] Uncertainty in (r-J)magstat.errorfloat(r-z)[0.3/0.8]? SDSS r-z color indexmagphot.color;em.opt.R;em.opt.Ifloatnullablee_(r-z)[0.02/0.09]? Uncertainty in (r-z)magstat.errorfloatnullableM19Display data from Marsset+, 2019, J/AJ/157/94meta.ref.urlintnullableJ/ApJS/243/12/table3o3l and o4h Col-OSSOS TNO observationsMJD[56891.4/57390.4] Modified Julian Date, JD-2400000.5dtime.epochdoublemag1[20.8/25.3] Magnitude in Filtmagphot.magfloatzpt1[23.7/32.8] Zeropointmagstat.fit;arith.zpfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMPCMPC designationmeta.id;meta.maincharOSSOSOSSOS designation (1)meta.idcharIDColOSSOS Header identifier (2)meta.idcharFileReduced FITS filename (3)meta.id;meta.fitscharFiltFilter (J; g.MP9402; r.MP9602; g_G0301; r_G0303 or z_G0304)meta.id;instr.filterchare_mag1[0.01/0.2] Uncertainty in mag1magstat.errorfloate_zpt1[0.001/0.02] Uncertainty in zpt1magstat.errorfloatmag2[22.3/25.4]? SDSS magnitude (see Appendix A3 for the photometric calibration to SDSS photometric system)magphot.magfloatnullablee_mag2[0.01/0.3]? Uncertainty in mag2magstat.errorfloatnullableExp[200/4800] Exposure time (4)stime.duration;obs.exposureintAssocDataAssociated Data web pagemeta.ref.urlchar