J/ApJ/868/124ivo://CDS.VizieR/J/ApJ/868/124doi:10.26093/cds/vizier.18680124CDSFeng X.Yao S.Li D.Li G.Yan X.2020-04-16T12:25:08Z2019-12-13T17:17:18ZCDS support team

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

cds-question@unistra.frthe-sunWe present a statistical study of 219 ICMEs measured by both ACE and WIND from 1998 to 2011. ICME plasmas are defined as possessing cold materials if the carbon average charge states are lower than those of the preceding solar wind by three standard deviations and the carbon ionic temperature is lower than 106.05K. A total of 69 ICMEs were identified as containing cold materials. These ICMEs tend to have speeds in the range of 300-600km/s, with durations between 2 and 6hr. Cold materials tend to be present once or twice per ICME. We further identify two special types of cold materials: the ionic-cold type (IC) shows simultaneous lower average charge states of O, Mg, Si, and Fe ions than those of the preceding solar wind, while the carbon-only cold type (COC) shows a totally opposite trend in that these ions show higher average charge than in the preceding solar wind. We found that the IC has a higher proton temperature than the ICME mean value, whereas the COC has a lower proton temperature than the ICME mean value, and the COC is most often measured in magnetic cloud. A detailed examination of the IC and the COC material suggests that they are related to solar filaments. Their special mean charge indicates that the filaments are a mixture of coronal and choromospheric materials. Heating and collision processes beyond the carbon freeze-in height are crucial in generating the two distinct types.2018ApJ...868..124Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/868/124CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/422/337 : Solar EUV Post-Eruptive Arcades (Tripathi+, 2004)J/A+A/440/373 : Earthbound interplanetary shocks (Howard+, 2005)J/ApJ/709/1238 : Solar Coronal Mass Ejection (Yeates+, 2010)J/ApJ/721/901 : Solar quiescent filament channels (Su+, 2010)J/ApJ/759/69 : Solar electron events, 1995-2005, with WIND/3DP (Wang+, 2012)J/ApJ/831/105 : Global energetics of solar flares. IV. CME (Aschwanden, 2016)J/MNRAS/456/1542 : Predicting CMEs transit times (Sudar+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/868/124https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/868/124http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/868/124https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/868/124https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/868/124http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/868/124GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/868/124/table6The 219 interplanetary coronal mass ejections (ICMEs) measured by both ACE and WIND between 1998 and 2011recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/219] Running sequence number of ICMEsmeta.numberintprimaryCCDisplay the carbon cold data (link to Tables 7 and 8)meta.ref.urlcharShockUT date of the shockstime.epochnullableStartUT ACE observation ICME start datestime.start;obsnullableEndUT ACE observation ICME end datestime.end;obsnullableVmin[272/706] Minimum velocity of ICMEkm/sphys.veloc;stat.minintVmax[340/1037] Maximum velocity of ICMEkm/sphys.veloc;stat.maxintMC?Magnetic Cloud? Yes/Nometa.codecharJ/ApJ/868/124/table7Carbon ionization temperature of carbon cold segmentsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[2/219] Running sequence number of ICMEsmeta.numberintStartUT Carbon Cold start datestime.startnullableEndUT Carbon Cold end datestime.endnullableDurCarbon Cold durationtime.durationnullableVmean[324/839] Mean velocity of Carbon Cold Segmentkm/sphys.veloc;stat.meanintlogTCSW[6/6.2] CHIANTI log temperature of carbon ions in 24h preceding solar windlog(K)phys.temperaturefloatlogTCCC[5.8/6.1] CHIANTI log temperature of carbon ions in Carbon Cold segmentlog(K)phys.temperaturefloatJ/ApJ/868/124/table8Plasma moments of the carbon cold materials in the ICMEs and the related CME observationsTypeType (1)meta.code.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[2/219] Running sequence number of ICMEsmeta.numberintStartUT date of Carbon Cold start datestime.startnullableEndUT date of Carbon Cold end datestime.endnullableTpProton temperature (Low/High)meta.notecharNaAlpha particle number density (Low/High)meta.notecharNpProton number density (Low/High)meta.notecharRapAlpha to proton density ratio (Low/High)meta.notecharHaloHalo CME? (Yes/No report/No data)meta.codecharCoreBright core? (Yes/No report/No data)meta.codecharTpICME[10727/174755] Proton temperature in ICMEKphys.temperaturedoubleTpCC[8243/386546] Proton temperature in Carbon ColdKphys.temperaturedoubleNaICME[0.01/1.4] Alpha particle number density in ICMEcm**-3meta.number;phys.densityfloatNaCC[0.008/2.5] Alpha particle number density in Carbon Coldcm**-3meta.number;phys.densityfloatNpICME[0.9/18.3] Proton number density in ICMEcm**-3meta.id;meta.mainfloatNpCC[0.5/24.4] Proton number density in Carbon Coldcm**-3meta.idfloatRapICME[0.01/0.2] Alpha to proton density ratio in ICMEphys.density;arith.ratiodoubleRapCC[0.008/0.2] Alpha to proton density ratio in Carbon Coldphys.density;arith.ratiodouble