J/ApJ/791/121ivo://CDS.VizieR/J/ApJ/791/121doi:10.26093/cds/vizier.17910121CDSMasiero J.R.Grav T.Mainzer A.K.Nugent C.R.Bauer J.M.Stevenson R.,Sonnett S.2018-01-02T13:43:07Z2017-04-07T15:50:30ZCDS support team

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

cds-question@unistra.frasteroidsWe present revised near-infrared albedo fits of 2835 main-belt asteroids observed by WISE/NEOWISE over the course of its fully cryogenic survey in 2010. These fits are derived from reflected-light near-infrared images taken simultaneously with thermal emission measurements, allowing for more accurate measurements of the near-infrared albedos than is possible for visible albedo measurements. Because our sample requires reflected light measurements, it undersamples small, low-albedo asteroids, as well as those with blue spectral slopes across the wavelengths investigated. We find that the main belt separates into three distinct groups of 6%, 16%, and 40% reflectance at 3.4 {mu}m. Conversely, the 4.6 {mu}m albedo distribution spans the full range of possible values with no clear grouping. Asteroid families show a narrow distribution of 3.4 {mu}m albedos within each family that map to one of the three observed groupings, with the (221) Eos family being the sole family associated with the 16% reflectance 3.4 {mu}m albedo group. We show that near-infrared albedos derived from simultaneous thermal emission and reflected light measurements are important indicators of asteroid taxonomy and can identify interesting targets for spectroscopic follow-up.2014ApJ...791..121Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/791/121CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/741/68 : Main Belt asteroids with WISE/NEOWISE. I. (Masiero+, 2011)J/ApJ/770/7 : WISE/NEOWISE Main Belt asteroids: family membersJ/A+A/578/A42 : Main Belt asteroids observed by Spitzer (Ryan+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/791/121https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/791/121http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/791/121https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/791/121https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/791/121http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/791/121GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/791/121/table1Revised thermal fits of Main Belt asteroidsONameSimbad column added by the CDSmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameAsteroid number, MPC-packed formatmeta.idcharDiaDiameterkmphys.size.diameterfloate_DiaUncertainty in Diakmstat.errorfloatetaBeaming parameterstat.fit.paramfloate_etaUncertainty in etastat.error;phys.electron.degenfloatpVVisible albedophys.albedofloate_pVUncertainty in pVstat.errorfloatpW1WISE 3.4 micron band albedophys.albedofloate_pW1Uncertainty in pW1stat.errorfloatpW2? WISE 4.5 micron band albedo (1)phys.albedofloatnullablee_pW2? Uncertainty in pW2stat.errorfloatnullableHVMagAbsolute H_V_ magnitudemagphys.magAbsfloatGPhotometric slope parameterarith.grad;stat.paramfloatFamily? Associated family identifier from Masiero et al. (2013, J/ApJ/770/7) (2)meta.idintnullable