J/ApJ/787/47ivo://CDS.VizieR/J/ApJ/787/47doi:10.26093/cds/vizier.17870047CDSSanchis-Ojeda R.Rappaport S.Winn J.N.Kotson M.C.Levine A.,El Mellah I.2017-12-01T12:54:55Z2017-07-04T12:10:42ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetseffective-temperaturestellar-radiiWe present the results of a survey aimed at discovering and studying transiting planets with orbital periods shorter than one day (ultra-short-period, or USP, planets), using data from the Kepler spacecraft. We computed Fourier transforms of the photometric time series for all 200000 target stars, and detected transit signals based on the presence of regularly spaced sharp peaks in the Fourier spectrum. We present a list of 106 USP candidates, of which 18 have not previously been described in the literature. This list of candidates increases the number of planet candidates with orbital periods shorter than about six hours from two to seven. In addition, among the objects we studied, there are 26 USP candidates that had been previously reported in the literature which do not pass our various tests. All 106 of our candidates have passed several standard tests to rule out false positives due to eclipsing stellar systems. A low false positive rate is also implied by the relatively high fraction of candidates for which more than one transiting planet signal was detected. By assuming these multi-transit candidates represent coplanar multi-planet systems, we are able to infer that the USP planets are typically accompanied by other planets with periods in the range 1-50 days, in contrast with hot Jupiters which very rarely have companions in that same period range. Another clear pattern is that almost all USP planets are smaller than 2 R_{earth}_, possibly because gas giants in very tight orbits would lose their atmospheres by photoevaporation when subject to extremely strong stellar irradiation. Based on our survey statistics, USP planets exist around approximately (0.51+/-0.07)% of G-dwarf stars, and (0.83+/-0.18)% of K-dwarf stars.2014ApJ...787...47Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/787/47CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/A+A/555/A58 : New Kepler planetary candidates (Ofir+, 2013)J/MNRAS/429/2001 : New transiting planet candidates from Kepler (Huang+, 2013)J/ApJS/211/2 : Revised stellar properties of Q1-16 Kepler targetshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/787/47https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/787/47http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/787/47https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/787/47https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/787/47http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/787/47GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/787/47/table1 (Characteristics of the 106 USP Planet Candidates Discovered in the Kepler Data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/787/47/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/787/47/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/787/47/table1?GETtext/xml+votable180.050000true291.1245437.986511110.0055555555555555565/3646 3690 3695 6/14573 14579 14589 14733 14734 14744 14746 14753 14754 14755 14756 14759 14766 14767 14768 14770 14772 14779 14824 14919 14921 14929 14930 14933 14934 14939 14945 14946 14947 14948 14953 14955 14956 14960 14963 14966 14974 14975 15040 15041 15045 15060 15104 15106 15107 15108 15109 15110 15113 15115 15118 15119 15120 15122 15124 15126 15128 15129 15131 15132 15134 15136 15137 15141 15145 15149 15150 15154 15157 15168 15171 15173 15174https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/787/47?format=asciidefaultJ/ApJ/787/47/table1Characteristics of the 106 USP Planet Candidates Discovered in the Kepler DatarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[ABC] Planet candidate group (1)meta.codecharKICKIC number (KIC NNNNNNNN in Simbad)meta.id;meta.maincharKOIKOI number (KOI -NNNN.NN in Simbad) (2)meta.idfloatKpmagKepler magnitudemagphot.mag;em.optfloatTeffEffective temperatureKphys.temperature.effectiveintE_TeffUpper limit uncertainty in TeffKstat.error;stat.maxinte_TeffLower limit uncertainty in TeffKstat.error;phys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatE_loggUpper limit uncertainty in logglog(cm.s**-2)stat.error;stat.maxfloate_loggLower limit uncertainty in logglog(cm.s**-2)stat.errorfloatR*Stellar radiussolRadphys.size.radiusfloatE_R*Upper limit uncertainty in R*solRadstat.error;stat.maxfloate_R*Lower limit uncertainty in R*solRadstat.errorfloatPorbOrbital perioddtime.perioddoublet0The midtransit time (BJD-2454900)dtime.epochdoubleDepthTransit depth(10-6)src.var.amplitudeintE_DepthUpper limit uncertainty in Depth(10-6)stat.error;stat.maxinte_DepthLower limit uncertainty in Depth(10-6)stat.error;phys.absorption.opticalDepthintDurTransit durationhtime.durationfloatE_DurUpper limit uncertainty in Durhstat.error;stat.maxfloate_DurLower limit uncertainty in Durhstat.errorfloata/R*The inverse transit probabilitystat.fit.goodnessfloatE_a/R*Upper limit uncertainty in a/R*stat.error;stat.maxfloate_a/R*Lower limit uncertainty in a/R*stat.errorfloatRpPlanet radius(6.3781x10+6m)phys.size.radiusfloatE_RpUpper limit uncertainty in Rp(6.3781x10+6m)stat.error;stat.maxfloate_RpLower limit uncertainty in Rp(6.3781x10+6m)stat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition (as computed from Kepler Input Catalog, 2009, Cat. V/133) (right ascension part)degpos.eq.ra;meta.main_DEPosition (as computed from Kepler Input Catalog, 2009, Cat. V/133) (declination part)degpos.eq.dec;meta.main