J/MNRAS/420/2884ivo://CDS.VizieR/J/MNRAS/420/2884doi:10.26093/cds/vizier.74202884CDSSmith R.Jeffries R.D.2024-07-16T20:12:37Z2012-12-03T09:52:55ZCDS support team

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

cds-question@unistra.fropen-star-clustersmillimeter-astronomyphotometrysubmillimeter-astronomylate-type-starsWe present an analysis of Spitzer IRAC (3.6-8um) and MIPS (24um) imaging of members of the 16^+10^_-5_ Myr old open cluster NGC 1960 (M36). Models of terrestrial planet formation indicate that rocky planets are likely to achieve their final masses at around 10-30Myr, and thus this cluster is at an interesting epoch for planet formation. We find 21 B-F5 type stars and 14 F6-K9 type stars which have 24um excess emission, and thus determine that >30 per cent of B-F5 type stars and >23 per cent of F6-K9 type stars in this cluster have 24um excess emission. These excess frequencies are similar to those observed in other clusters of similar age. Three early-type stars have excesses at near-infrared wavelengths. Analysis of their spectral energy distributions confirms that these are true debris discs and not remnant primordial or transitional discs. None of the 61 Sun-like stars has confirmed near-infrared excess, and we can place a limit on the frequency of 8um excess emission around Sun-like stars of <7 per cent. All of the detected excesses are consistent with emission from debris discs and are not primordial.2012MNRAS.420.2884Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/420/2884CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/357/471 : BV and proper motions in NGC 1960 + NGC 2194 (Sanner+, 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/420/2884https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/420/2884http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/420/2884https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/420/2884https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/420/2884http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/420/2884GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/420/2884/table13 (Bright members of NGC 1960)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/420/2884/table13?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/420/2884/table13?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/420/2884/table13?GETtext/xml+votable180.050000true84.0658534.14360.005555555555555556Cone search capability for table J/MNRAS/420/2884/table24 (Lower mass members of NGC 1960)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/420/2884/table24?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/420/2884/table24?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/420/2884/table24?GETtext/xml+votable180.050000true84.0667134.0180.0055555555555555566/24508 245106.772611666688002e-21 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/420/2884?format=asciiRadiodefaultJ/MNRAS/420/2884/table13Bright members of NGC 1960recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSABNumber from Sanner et al. 2000 (J/A+A/357/471) <Cl* NGC 1960 SAB NNNN> in Simbadmeta.id;meta.mainintRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainV0magDereddened V magnitude (G1)magphot.mag.reddFree;em.opt.Vfloat(B-V)0Dereddened B-V colour index (G1)magphot.color;em.opt.B;em.opt.Vfloat(V-Ks)0Dereddened V-Ks colour index (G1)magphot.color;em.opt.V;em.IR.KfloatTeffEffective temperatureKphys.temperature.effectiveint[3.6]Spitzer/IRAC 3.6um magnitudemagphot.mag;em.IR.3-4umfloate_[3.6]rms uncertainty on [3.6] (G2)magstat.errorfloat[4.5]Spitzer/IRAC 4.5um magnitudemagphot.mag;em.IR.4-8umfloate_[4.5]rms uncertainty on [4.5] (G2)magstat.errorfloat[5.8]Spitzer/IRAC 5.8um magnitudemagphot.flux.density;em.IR.4-8umfloate_[5.8]rms uncertainty on [5.8] (G2)magstat.errorfloat[8.0]Spitzer/IRAC 8.0um magnitudemagphot.flux.density;em.IR.8-15umfloate_[8.0]rms uncertainty on [8.0] (G2)magstat.errorfloatl_[24]Limit flag on [24]meta.code.errorchar[24]Spitzer/MIPS 24um magnitudemagphot.flux.density;em.IR.15-30umfloate_[24]? Spitzer/IRAC 24um magnitudemagstat.errorfloatnullablel_Ks-[24]Limit flag on Ks-[24]meta.code.errorcharKs-[24]Ks-[24] colour indexmagphot.color;em.IR;em.IRfloatl_F24/FphLimit flag on F24/Fphmeta.code.errorcharF24/FphRatio of 24{mu}m to photospheric flux from Plavchan et al. (2009ApJ...698.1068P) relationphot.flux;arith.ratiofloatComComments (G3)meta.notecharSimbadSimbad column added by the CDSmeta.refcharJ/MNRAS/420/2884/table24Lower mass members of NGC 1960l_[24]Limit flag on [24]meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSource designation, N_NNNNmeta.id;meta.maincharRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainV0magDereddened V magnitude (G1)magphot.mag.reddFree;em.opt.Vfloat(B-V)0Dereddened B-V colour index (G1)magphot.color;em.opt.B;em.opt.Vfloat(V-Ks)0Dereddened V-Ks colour index (G1)magphot.color;em.opt.V;em.IR.KfloatTeffEffective temperatureKphys.temperature.effectiveint[3.6]? Spitzer/IRAC 3.6um magnitudemagphot.mag;em.IR.3-4umfloatnullablee_[3.6]? rms uncertainty on [3.6] (G2)magstat.errorfloatnullable[4.5]Spitzer/IRAC 4.5um magnitudemagphot.mag;em.IR.4-8umfloatnullablee_[4.5]rms uncertainty on [4.5] (G2)magstat.errorfloatnullablel_[5.8]Limit flag on [5.8]meta.code.errorchar[5.8]? Spitzer/IRAC 5.8um magnitudemagphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? rms uncertainty on [5.8] (G2)magstat.errorfloatnullablel_[8.0]Limit flag on [8.0]meta.code.errorchar[8.0]Spitzer/IRAC 8.0um magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? rms uncertainty on [8.0] (G2)magstat.errorfloatnullable[24]Spitzer/MIPS 24um magnitudemagphot.flux.density;em.IR.15-30umfloatnullablee_[24]? Spitzer/IRAC 24um magnitudemagstat.errorfloatnullablel_Ks-[24]Limit flag on Ks-[24]meta.code.errorcharKs-[24]Ks-[24] colour indexmagphot.color;em.IR;em.IRfloatnullablel_F24/FphLimit flag on F24/Fphmeta.code.errorcharF24/FphRatio of 24{mu}m to photospheric flux from Plavchan et al. (2009ApJ...698.1068P) relationphot.flux;arith.ratiofloatnullableComComments (G3)meta.notecharnullable