J/ApJ/756/133ivo://CDS.VizieR/J/ApJ/756/133doi:10.26093/cds/vizier.17560133CDSChen C.H.Pecaut M.Mamajek E.E.Su K.Y.L.Bitner M.2017-05-30T07:01:38Z2013-01-14T11:50:44ZCDS support team

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

cds-question@unistra.frstellar-associationsinfrared-photometryb-starsWe have obtained Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) 24 micron and 70 micron observations of 215 nearby, Hipparcos B- and A-type common proper-motion single and binary systems in the nearest OB association, Scorpius-Centaurus. Combining our MIPS observations with those of other ScoCen stars in the literature, we estimate 24 micron B+A-type disk fractions of 17/67 (25^+6^_-5_%), 36/131 (27^+4^_-5_%), and 23/95 (24^+5^_-4_%) for Upper Scorpius (~11Myr), Upper Centaurus Lupus (~15Myr), and Lower Centaurus Crux (~17Myr), respectively, somewhat smaller disk fractions than previously obtained for F- and G-type members. We confirm previous IRAS excess detections and present new discoveries of 51 protoplanetary and debris disk systems, with fractional infrared luminosities ranging from LIR/L*=10^-6^ to 10^-2^ and grain temperatures ranging from Tgr=40 to 300K. In addition, we confirm that the 24 micron and 70 micron excesses (or fractional infrared luminosities) around B+A-type stars are smaller than those measured toward F+G-type stars and hypothesize that the observed disk property dependence on stellar mass may be the result of a higher stellar companion fraction around B- and A-type stars at 10-200AU. Finally, we note that the majority of the ScoCen 24 micron excess sources also possess 12 micron excess, indicating that Earth-like planets may be forming via collisions in the terrestrial planet zone at ~10-100Myr.2012ApJ...756..133Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/756/133CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)J/ApJ/738/122 : ScoCen debris disks Around F- and G-type stars (Chen+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/756/133https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/756/133http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/756/133https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/756/133https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/756/133http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/756/133GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/756/133/stars (Stars studied, with their Spitzer/MIPS fluxes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/756/133/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/756/133/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/756/133/stars?GETtext/xml+votable180.050000true153.3776367-66.37281190.0055555555555555566/37175 37177 37186 37237 37242 37268 37270 37314 37888 37900 37928 37968 37977 37978 37980 37990 38145 38155 38157 38162 38212 38215 38255 38272 41513 41534 41606 41607 41618 41632 41633 41634 41637 41641 41643 41650 41652 41705 41726 41866 41869 41880 41917 41947 41963 41971 41973 41983 42173 42218 42237 42382 42399 42400 42406 42407 42412 42414 42424 42425 42428 42465 42509 42549 42584 42605 42610 42612 42617 42618 42619 42622 42623 42628 42633 42635 42640 42645 42652 42656 42672 42674 42687 42694 42701 42708 42711 42714 42728 42730 42734 42736 42738 42742 42754 42758 42763 42980 43011 43012 43014 43017 43032 43038 43062 43065 43067 43072 43093 43094 43097 43103 43111 43115 43117 43127 43130 43137 43139 43140 43147 43153 43154 43157 43160 43165 43177 43183 43192 43201 43205 43206 43210 43211 43224 43228 43229 43230 43238 43255 43256 43259 43272 43276 43277 43285 43287 43292 43293 43301 43323 43331 43332 43333 43342 43345 43349 43364 43367 43369 43375 43377 43383 43397 43402 43407 43414 43416 43423 43425 43429 43435 43457 43460 43468 43488 43523 43527 43528 43530 43531 43538 43540 43558 43559 44043 44046 44054 44055 44059 44067 44068 44069 44073 44076 44081 44088 44096 44098 44101 44119 44136 441392.4016587514425055e-21 1.000830682546041e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/756/133?format=asciiInfrareddefaultJ/ApJ/756/133/refsReferencesAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference Codemeta.notecharBibCodeBibCodemeta.bib.bibcodecharJ/ApJ/756/133/starsStars studied, with their Spitzer/MIPS fluxesAOR? Astronomical Observing Requestmeta.idintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDSimbad column added by the CDSmeta.ref.urlcharHIPHipparcos numbermeta.id;meta.mainintprimaryNameStar Namemeta.idcharSpTypeSpectral Typesrc.spTypecharr_SpTypeReference for Spectral Type in refs.dat filemeta.ref;pos.framecharDistHipparcos Distancepcpos.distance;pos.heliocentricfloatE_Dist+1-{sigma} error on Distancepcstat.error;stat.maxfloate_Dist-1-{sigma} error on Distancepcstat.errorfloatA(V)V-band Extinctionmagphys.absorption;em.opt.Vfloate_A(V)1-{sigma} error on A(V)magstat.errorfloatsgrScoCen Subgroup (G1)meta.notecharSep1? Binary Separationarcsecpos.angDistancefloatnullableSep2? Binary Separationarcsecpos.angDistancefloatnullableSep3? Binary Separationarcsecpos.angDistancefloatnullableSep4? Binary Separationarcsecpos.angDistancefloatnullableSep5? Binary Separationarcsecpos.angDistancefloatnullableSep6? Binary Separationarcsecpos.angDistancefloatnullableSep7? Binary Separationarcsecpos.angDistancefloatnullabler_SepReference for Binary Separation in refs.datmeta.ref;pos.framecharNotesNotes about binarity or classification.meta.notecharSimbadSimbad column added by the CDSmeta.refcharf_F24[Y/N] Contamination Flag for MIPS 24um Fluxmeta.codecharF24? Spitzer/MIPS 24{mu}m flux (not color-corrected)mJyphot.flux.density;em.IR.15-30umfloatnullablee_F24? 1-{sigma} error on F24 (1)mJystat.errorfloatnullableP24? Predicted Photospheric MIPS 24 FluxmJyphot.flux.density;em.IR.15-30umfloatnullablechi24? MIPS 24um Excess Significance (2)stat.fit.goodnessfloatnullablel_F70Limit Flag on MIPS 70um Fluxmeta.code.errorcharF70? Spitzer/MIPS 70{mu}m flux (not color-corrected)mJyphot.flux.density;em.IR.30-60umfloatnullablee_F70? 1-{sigma} error on F70 (1)mJystat.errorfloatnullableP70? Predicted Photospheric MIPS 70 FluxmJyphot.flux.density;em.IR.15-30umfloatnullablechi70? MIPS 70um Excess Significance (2)stat.fit.goodnessfloatnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJ/756/133/table3Single Temperature Blackbody model parameters for objects with significant far-IR excess {chi}>=6recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHipparcos numbermeta.id;meta.mainintNameStar Namemeta.idcharTeffStellar Effective Temperaturephys.temperature.effectiveintL*Stellar LuminositysolLumphys.luminosityfloatE_L*1-{sigma} error on L* (upper value)solLumstat.error;stat.maxfloate_L*1-{sigma} error on L* (lower value)solLumstat.errorfloatM*Stellar MasssolMassphys.massfloatAgeStellar AgeMyrtime.ageintl_TgrLimit Flag on Tgrmeta.code.errorcharTgrGrain TemperatureKphys.temperatureintLIR/L*Fractional Infrared Luminosityphys.luminosity;arith.ratiodoubleaminMinimum Grain Sizeumphys.angSizefloatl_DistLimit on Distmeta.code.errorcharDistGrain DistanceAUpos.distanceintMdustDust Mass, in Moon mass7.35e+25gphys.massdoublel_MPBlimit on MPBmeta.code.errorcharMPBParent Body Mass, in Moon massphys.massfloatsgrScoCen Subgroup (G1)meta.notechar