J/ApJS/234/37ivo://CDS.VizieR/J/ApJS/234/37doi:10.26093/cds/vizier.22340037CDSMolnar L.Pal A.Sarneczky K.Szabo R.Vinko J.Szabo G.M.Kiss C.,Hanyecz O.Marton G.Kiss L.L.2018-10-22T12:19:34Z2018-08-31T09:13:56ZCDS support team

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

cds-question@unistra.frasteroidsphotometryvisible-astronomyWe present the K2 light curves of a large sample of untargeted main-belt asteroids (MBAs) detected with the Kepler Space Telescope. The asteroids were observed within the Uranus superstamp, a relatively large, continuous field with a low stellar background designed to cover the planet Uranus and its moons during Campaign 8 of the K2 mission. The superstamp offered the possibility of obtaining precise, uninterrupted light curves of a large number of MBAs and thus determining unambiguous rotation rates for them. We obtained photometry for 608 MBAs, and were able to determine or estimate rotation rates for 90 targets, of which 86 had no known values before. In an additional 16 targets we detected incomplete cycles and/or eclipse-like events. We found the median rotation rate to be significantly longer than that of the ground-based observations, indicating that the latter are biased toward shorter rotation rates. Our study highlights the need and benefits of further continuous photometry of asteroids.2018ApJS..234...37Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/234/37CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/284 : The USNO-B1.0 Catalog (Monet+ 2003)J/A+A/498/313 : Photometry of 3 main belt asteroids (Marciniak+, 2009)J/A+A/508/1503 : Photometry of 3 main belt asteroids (Marciniak+, 2009)J/A+A/529/A107 : Photometry of 4 main belt asteroids (Marciniak+, 2011)J/ApJ/741/68 : Main Belt asteroids with WISE/NEOWISE. I. (Masiero+, 2011)J/ApJ/759/L8 : WISE/NEOWISE obs. of main belt asteroids (Masiero+, 2012)J/A+A/545/A131 : Photometry of 8 main belt asteroids (Marciniak+, 2012)J/PASP/124/1279 : Q3 Kepler's combined photometry (Christiansen+, 2012)J/ApJ/770/7 : WISE/NEOWISE Main Belt asteroids (Masiero+, 2013)J/ApJ/791/121 : NIR albedos of main-belt asteroids (Masiero+, 2014)J/ApJS/210/1 : Asteroseismic study of solar-type stars (Chaplin+, 2014)J/ApJS/219/27 : Surveys of asteroid rotation periods with iPTF (Chang+, 2015)J/MNRAS/452/2127 : Fundamental param. of Kepler stars (Silva Aguirre+, 2015)J/AJ/150/75 : Asteroid light curves from PTF survey (Waszczak+, 2015)J/A+A/578/A42 : Main Belt asteroids observed by Spitzer (Ryan+, 2015)J/AJ/152/70 : Outer Solar System Origins Survey. I. (Bannister+, 2016)J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)J/AJ/151/117 : R photometry of (225088) 2007 OR_10_ (Pal+, 2016)J/AJ/152/54 : Main-belt Ch/Cgh-type asteroids spectrosc. (Vernazza+, 2016)J/A+A/596/A40 : Main-belt asteroids optical light curves (Szabo+, 2016)J/A+A/607/A103 : Main-belt asteroids polarimetry. VI. (Gil-Hutton+, 2017)J/AJ/153/149 : Broadband photometry of Neptune from K2 (Rowe+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/234/37https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/234/37http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/234/37https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/234/37https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/234/37http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/234/37GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJS/234/37/asteroidsList of asteroids analysed in this work; table added by CDSLCInteractive plotmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDNumber or provisional designation of the objectmeta.id;meta.maincharprimaryNpNumber of photometry measurements for this asteroid (link to table 1)meta.numberintnullableJ/ApJS/234/37/table1Photometry of main-belt asteroids observed in the Uranus superstamp during Campaign 8 of the K2 missionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDNumber or provisional designation of the objectmeta.id;meta.maincharBJD[2457392/2457470] Barycentric Julian Datedtime.epochdoubleRmag[16/24] Apparent USNO R band magnitudemagphot.mag;em.opt.Rfloate_Rmag[0.002/1] Uncertainty in Rmagmagstat.error;phot.mag;em.opt.Rfloat