J/MNRAS/526/2278ivo://CDS.VizieR/J/MNRAS/526/2278doi:10.26093/cds/vizier.75262278CDSAvison A.Fuller G.A.Asabre Frimpong N.Etoka S.Hoare M.Jones B.M.,Peretto N.Traficante A.van der Tak F.Pineda J.E.Beltran M.,Wyrowski F.Thompson M.Lumsden S.Nagy Z.Hill T.Viti S.,Fontani F.Schilke P.2024-11-06T20:34:58Z2024-05-02T12:34:08ZCDS support team

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

cds-question@unistra.frstellar-associationsmillimeter-astronomysubmillimeter-astronomygalaxy-classification-systemsThe role of massive (>=8M_{sun}_) stars in defining the energy budget and chemical enrichment of the interstellar medium in their host galaxy is significant. In this first paper from the Tracing Evolution in Massive Protostellar Objects (TEMPO) project we introduce a colour-luminosity selected (L*~3x10^3^ to 1x10^5^L_{sun}_) sample of 38 massive star forming regions observed with ALMA at 1.3mm and explore the fragmentation, clustering and flux density properties of the sample. The TEMPO sample fields are each found to contain multiple fragments (between 2-15 per field). The flux density budget is split evenly (53%-47%) between fields where emission is dominated by a single high flux density fragment and those in which the combined flux density of fainter objects dominates. The fragmentation scales observed in most fields are not comparable with the thermal Jeans length, {lambda}_J_, being larger in the majority of cases, suggestive of some non-thermal mechanism. A tentative evolutionary trend is seen between luminosity of the clump and the "spectral line richness" of the TEMPO fields; with 6.7GHz maser associated fields found to be lower luminosity and more line rich. This work also describes a method of line-free continuum channel selection within ALMA data and a generalised approach used to distinguishing sources which are potentially star-forming from those which are not, utilising interferometric visibility properties.2023MNRAS.526.2278Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/526/2278CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/96 : 6-GHz methanol multibeam maser catalogueJ/ApJS/208/11 : The Red MSX Source Survey: massive protostarsJ/MNRAS/451/3089 : Young clumps embedded in IRDC (Traficante+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/526/2278https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/526/2278http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/526/2278https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/526/2278https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/526/2278http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/526/2278GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/526/2278/table1 (Selection criteria properties of fields in the sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/526/2278/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/526/2278/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/526/2278/table1?GETtext/xml+votable180.050000true274.35166667-17.370833330.005555555555555556Cone search capability for table J/MNRAS/526/2278/table4 (Sources detected in the TEMPO sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/526/2278/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/526/2278/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/526/2278/table4?GETtext/xml+votable180.050000true274.35155833-17.370755560.0055555555555555566/29112 29504 29508 29522 29532 29534 30218-30219 30256 30259 30262 30313 30319 30405 30420 30605 30616-30617 30622-30623 30695 41814 41820 42168 42172 42229-42230 42396https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/526/2278?format=asciiOpticalMillimeterdefaultJ/MNRAS/526/2278/table1Selection criteria properties of fields in the sampleSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id;meta.maincharRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainL*Luminosity (1)10000solLumphys.luminosityfloatS70um/S22um? 70um/22um flux ratiophot.flux;arith.ratiofloatnullablen_S70um/S22um[+] + for non-detection at 22ummeta.notecharDDistance (1)kpcpos.distancefloatMaser?[Y/N] CH_3_OH maser ? (2)meta.codecharrmsrms noisemJystat.stdev;instr.det.noisefloat%-ageBWPercentage of the total observed bandwidth (7.5GHz) which was used in imaging once spectral line emission was removed (see Sect. 2.3).stat.fit.paramfloatN[2/15] Number of sources detected in each fieldmeta.numberfloatRclDistance from the arithmetic average source position to the most distant source in the clusterpcpos.distancefloatFOVField of view at the field distancepcpos.distancefloatXmeanMean edge length of the minimum spanning tree of sources in each fieldpcsrc.morph.scLengthfloatlambdaJThermal Jeans length at Tclumppcpos.distance;phys.sizefloatMclumpClump mass (3)solMassphys.massfloatRclumpClump radius (3)pcphys.size.radiusfloatTclumpClump temperature (3)Kphys.temperaturefloatJ/MNRAS/526/2278/table4Sources detected in the TEMPO samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField name as specified in Table 1meta.id.parentcharSNum[0/14] Source number of the TEMPO fragment fieldmeta.id;obs.fieldintRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainaMajFitted Major axisarcsecphys.angSize;srcfloatbMinFitted Minor axisarcsecphys.angSize;srcfloatPA[] Position Angledegpos.posAngfloatSContMeasured source continuum flux densitymJyphot.flux.densitydoubleASC[0/3] Fragment ASC score as defined in Appdix Cmeta.codeintBright[0/1] Brightest fragment in field (1)meta.codeintCentAr[0/1] Most central fragment in field (arithmetic mean) (1)meta.codeintCentWe[0/1] Most central fragment in field (weighted mean) (1)meta.codeint