J/ApJ/805/77ivo://CDS.VizieR/J/ApJ/805/77doi:10.26093/cds/vizier.18050077CDSMeng H.Y.A.Su K.Y.L.Rieke G.H.Rujopakarn W.Myers G.Cook M.,Erdelyi E.Maloney C.McMath J.Persha G.Poshyachinda S.,Reichart D.E.2017-06-27T06:38:40Z2015-10-09T14:53:09ZCDS support team

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

cds-question@unistra.frinfrared-photometrymultiple-starsLuminous debris disks of warm dust in the terrestrial planet zones around solar-like stars were recently found to vary, which is indicative of ongoing large-scale collisions of rocky objects. We use Spitzer 3.6 and 4.5um time-series observations in 2012 and 2013 (extended to 2014 in one case) to monitor five more debris disks with unusually high fractional luminosities ("extreme debris disk"), including P1121 in the open cluster M47 (80 Myr), HD15407A in the AB Dor moving group (80Myr), HD 23514 in the Pleiades (120Myr), HD145263 in the Upper Sco Association (10Myr), and the field star BD+20 307 (>~1Gyr). Together with the published results for ID8 in NGC2547 (35Myr), this makes the first systematic time-domain investigation of planetary impacts outside the solar system. Significant variations with timescales shorter than a year are detected in five out of the six extreme debris disks we monitored. However, different systems show diverse sets of characteristics in the time domain, including long-term decay or growth, disk temperature variations, and possible periodicity.2015ApJ...805...77Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/805/77CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/211/25 : Spitzer/IRS debris disk catalog. I. (Chen+, 2014)J/AJ/147/82 : Monitoring of disk-bearing stars in NGC 2264 (Cody+, 2014)J/ApJ/775/55 : Spitzer IR excesses in A-K stars (Ballering+, 2013)J/ApJ/768/25 : Spitzer and Herschel obs. of debris disks (Gaspar+, 2013)J/AJ/145/66 : Spitzer light curves of YSOs in IC 348 (Flaherty+, 2013)J/ApJ/749/7 : RVs and EWs of the binary BD+20 307 (Fekel+, 2012)J/ApJ/746/154 : Kinematic parallaxes for Sco-Cen members (Pecaut+, 2012)J/ApJ/698/1989 : Spitzer survey of NGC 2451 (Balog+, 2009)J/ApJ/688/1345 : Differential phot. of the SB* BD+20 307 (Zuckerman+, 2008)J/ApJ/688/597 : Debris disks in NGC 2232 (Currie+, 2008)J/PASP/120/1128 : Calibrated griz magnitudes of Tycho star (Ofek, 2008)J/ApJS/175/191 : Variables from 2MASS calibration fields (Plavchan+, 2008)J/ApJ/670/516 : NGC 2547 4.5-8um photometry (Gorlova+, 2007)J/ApJ/653/675 : Spitzer 24{mu}m photometry of A dwarfs (Su+, 2006)J/ApJ/636/1098 : Debris disks around solar-type stars (Bryden+, 2006)J/ApJ/620/1010 : Spitzer 24{mu}m photometry of A dwarfs (Rieke+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/805/77https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/805/77http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/805/77https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/805/77https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/805/77http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/805/77GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/805/77/table1 (Summary of Spitzer observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/805/77/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/805/77/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/805/77/table1?GETtext/xml+votable180.050000true113.927875-14.84505560.0055555555555555566/460 691 3249 21528 429413.9193497546148093e-20 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/805/77?format=asciiInfrareddefaultJ/ApJ/805/77/table2Spitzer/IRAC photometry of the systems with extreme debris diskrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSystem identifiermeta.id;pos.framecharm_IDSystem componentmeta.code.multipcharBMJDBarycentric, modified Julian Date (1)dtime.epochdoubleBand[3.6/4.5] Band used in the observationuminstr.setup;obsfloatFlux[7.5/1601] Observed flux in BandmJyphot.flux.densitydoublee_Flux[0.01/14.7] The 1{sigma} uncertainty in FluxmJystat.error;phot.fluxfloatJ/ApJ/805/77/table6Optical monitoring of P1121recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBMJDBarycentric, modified Julian Date (1)dtime.epochdoubleFiltFilter used in the observationinstr.setup;obscharAirM[1/1.3] Airmass during observationobs.airMassfloatm1mag[0.5/0.7] Relative magnitude with respect to comparison star P1225magphot.mag;arith.difffloate_m1mag[0.002/0.004] The 1{sigma} uncertainty in m1magmagstat.error;phot.magfloatm2mag[-0.07/0.6]? Relative magnitude with respect to check star TYC 5409-601-1magphot.mag;arith.difffloatnullablee_m2mag[0.002/0.006]? The 1{sigma} uncertainty in m2magmagstat.error;phot.magfloatnullableJ/ApJ/805/77/table9Optical monitoring of BD+20 307recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBMJDBarycentric, modified Julian Date (1)dtime.epochdoubleFiltFilter used in the observation (B, V or "visual" (1 observation in table 7))instr.setup;obscharAirM[1/2.8]? Airmass during observationobs.airMassfloatnullablemag[6.8/10.3] Apparent magnitude in Filtmagphot.magfloate_mag[0.001/0.1] The 1{sigma} uncertainty in magmagstat.error;phot.magfloatComp1Comparison star identifier (2)magmeta.idcharComp2Check star identifier (2)magmeta.idcharJ/ApJ/805/77/table7Optical monitoring of HD 15407ArecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBMJDBarycentric, modified Julian Date (1)dtime.epochdoubleFiltFilter used in the observation (B, V or "visual" (1 observation in table 7))instr.setup;obscharAirM[1/2.8]? Airmass during observationobs.airMassfloatnullablemag[6.8/10.3] Apparent magnitude in Filtmagphot.magfloate_mag[0.001/0.1] The 1{sigma} uncertainty in magmagstat.error;phot.magfloatComp1Comparison star identifier (2)magmeta.idcharComp2Check star identifier (2)magmeta.idcharJ/ApJ/805/77/table8Optical monitoring of HD 23514recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBMJDBarycentric, modified Julian Date (1)dtime.epochdoubleFiltFilter used in the observation (B, V or "visual" (1 observation in table 7))instr.setup;obscharAirM[1/2.8]? Airmass during observationobs.airMassfloatnullablemag[6.8/10.3] Apparent magnitude in Filtmagphot.magfloate_mag[0.001/0.1] The 1{sigma} uncertainty in magmagstat.error;phot.magfloatComp1Comparison star identifier (2)magmeta.idcharComp2Check star identifier (2)magmeta.idcharJ/ApJ/805/77/table1Summary of Spitzer observationsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoInumber of Spitzer observation periodsmeta.numberintnullableIDSystem identifiermeta.id;pos.framecharm_IDSystem componentmeta.code.multipcharf_ID[ab] Flag on ID (1)meta.codecharSpTMK spectral typesrc.spTypecharF3.6[0.3/1259]? Spitzer/IRAC 3.6um stellar fluxmJyphot.mag;em.IR.3-4umdoublenullableF4.5[0.2/806]? Spitzer/IRAC 4.5um stellar fluxmJyphot.mag;em.IR.4-8umfloatnullablel_Age[>~ ] Limit flag on Agemeta.code.error;time.agecharAge[10/1000]? Star ageMyrtime.ageintnullableDist[55/490]? Distancepcpos.distance;pos.heliocentricintnullableE_Dist[2/26]? Positive error on Distpcstat.error;stat.maxintnullablee_Dist[2/20]? Negative error on Distpcstat.errorintnullableBMJD1? Coverage (BMJD) - lower rangedtime.epochfloatnullableBMJD2? Coverage (BMJD) - upper rangedtime.epochfloatnullableCadCadence (2)dtime.intervalcharDDNumber of flux measurements for this system with extreme debris diskmeta.numberintnullableLCIR light curves of the systemsmeta.ref.urlchar_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.main