J/MNRAS/456/2041ivo://CDS.VizieR/J/MNRAS/456/2041doi:10.26093/cds/vizier.74562041CDSContreras Y.Garay G.Rathborne J.M.Sanhueza P.2024-08-15T20:17:20Z2016-11-16T08:59:54ZCDS support team

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

cds-question@unistra.frinterstellar-mediummolecular-cloudsRecent surveys of dust continuum emission at sub-mm wavelengths have shown that filamentary molecular clouds are ubiquitous along the Galactic plane. These structures are inhomogeneous, with overdensities that are sometimes associated with infrared emission and active of star formation. To investigate the connection between filaments and star formation, requires an understanding of the processes that lead to the fragmentation of filaments and a determination of the physical properties of the overdensities (clumps). In this paper, we present a multiwavelength study of five filamentary molecular clouds, containing several clumps in different evolutionary stages of star formation. We analyse the fragmentation of the filaments and derive the physical properties of their clumps. We find that the clumps in all filaments have a characteristic spacing consistent with the prediction of the 'sausage' instability theory, regardless of the complex morphology of the filaments or their evolutionary stage. We also find that most clumps have sufficient mass and density to form high-mass stars, supporting the idea that high-mass stars and clusters form within filaments.2016MNRAS.456.2041Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/456/2041CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/815/130 : High-mass molecular clumps from MALT90 (Guzman+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/456/2041https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/456/2041http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/456/2041https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/456/2041https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/456/2041http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/456/2041GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/456/2041/table4 (Summary of the properties of the clumps embedded within the filaments)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/456/2041/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/456/2041/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/456/2041/table4?GETtext/xml+votable180.050000true251.3116667-46.23305560.0055555555555555566/42168-42169 42171 42210-42211 42213 42224-42225 42228https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/456/2041?format=asciidefaultJ/MNRAS/456/2041/table4Summary of the properties of the clumps embedded within the filamentsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintmoreindicates detected molecules in table 3meta.ref.urlcharClumpClump designationmeta.id;meta.maincharprimaryATLASGALATLASGAL name (AGALLLL.lll+BB.bbb)meta.idcharIRemSignatures detected in the IR images (1)meta.notecharClassIR-based category assigned to each clump (for more details see section 4.1)meta.code.classcharIRASIRAS sources that are located within 30 arcsec from the clumpmeta.idcharSizeSize of the clumppcphys.size.diameterfloatTdustAssumed dust temperature (2)Kphys.temperatureintMdustMass derived from the dust emissionsolMassphys.massintMvir? Virial mass derived from the N_2_H^+^ line widthsolMassphys.massintnullablealpha? Ratio between the virial and dust massphot.flux;arith.ratiofloatnullablen(H2)Molecular hydrogen volume density10000cm**-3phys.densityfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from ATLASGAL (Urquhart et al., 2014, Cat. J/A+A/568/A41) (right ascension part)degpos.eq.ra;meta.main_DEPositions from ATLASGAL (Urquhart et al., 2014, Cat. J/A+A/568/A41) (declination part)degpos.eq.dec;meta.mainJ/MNRAS/456/2041/table3Velocity, peak temperature and line width for the detected molecules in our samplee_HCNTA*? uncertainty on HCNTA*Kstat.errorfloatnullableN2H+vlsr? Line velocity for N_2_H^+^km/sphys.veloc;pos.lsrfloatnullableN2H+dv? Line width for N_2_H^+^km/sspect.line.widthfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClumpClump designationmeta.id;meta.mainchare_N2H+vlsr? uncertainty on N2H+vlsrkm/sstat.errorfloatnullableN2H+TA*? Antenna temperature for N_2_H^+^Kphot.antennaTempfloatnullablee_N2H+TA*? uncertainty on N2H+TA*Kstat.errorfloatnullablee_N2H+dv? uncertainty on N2H+dvkm/sstat.errorfloatnullableHNCvlsr? Line velocity for HNCkm/sphys.veloc;pos.lsrfloatnullablee_HNCvlsr? uncertainty on HNCvlsrkm/sstat.errorfloatnullableHNCTA*? Antenna temperature for HNCKphot.antennaTempfloatnullablee_HNCTA*? uncertainty on HNCTA*Kstat.errorfloatnullableHNCdv? Line width for HNCkm/sspect.line.widthfloatnullablee_HNCdv? uncertainty on HNCdvkm/sstat.errorfloatnullableHCNvlsr? Line velocity for HCNkm/sphys.veloc;pos.lsrfloatnullablee_HCNvlsr? uncertainty on HCNvlsrkm/sstat.errorfloatnullableHCNTA*? Antenna temperature for HCNKphot.antennaTempfloatnullableHCNdv? Line width for HCNkm/sspect.line.widthfloatnullablee_HCNdv? uncertainty on HCNdvkm/sstat.errorfloatnullableHCO+vlsr? Line velocity for HCO^+^km/sphys.veloc;pos.lsrfloatnullablee_HCO+vlsr? uncertainty on HCO+vlsrkm/sstat.errorfloatnullableHCO+TA*? Antenna temperature for HCO^+^Kphot.antennaTempfloatnullablee_HCO+TA*? uncertainty on HCO+TA*Kstat.errorfloatnullableHCO+dv? Line width for HCO^+^km/sspect.line.widthfloatnullablee_HCO+dv? uncertainty on HCO+dvkm/sstat.errorfloatnullableHC3Nvlsr? Line velocity for HC_3_Nkm/sphys.veloc;pos.lsrfloatnullablee_HC3Nvlsr? uncertainty on HC3Nvlsrkm/sstat.errorfloatnullableHC3NTA*? Antenna temperature for HC_3_NKphot.antennaTempfloatnullablee_HC3NTA*? uncertainty on HC3NTA*Kstat.errorfloatnullableHC3Ndv? Line width for HC_3_Nkm/sspect.line.widthfloatnullablee_HC3Ndv? uncertainty on HC3Ndvkm/sstat.errorfloatnullableC2Hvlsr? Line velocity for C_2_Hkm/sphys.veloc;pos.lsrfloatnullablee_C2Hvlsr? uncertainty on C2Hvlsrkm/sstat.errorfloatnullableC2HTA*? Antenna temperature for C_2_HKphot.antennaTempfloatnullablee_C2HTA*? uncertainty on C2HTA*Kstat.errorfloatnullableC2Hdv? Line width for C_2_Hkm/sspect.line.widthfloatnullablee_C2Hdv? uncertainty on C2Hdvkm/sstat.errorfloatnullableH13CO+vlsr? Line velocity for H^13^CO^+^km/sphys.veloc;pos.lsrfloatnullablee_H13CO+vlsr? uncertainty on H13CO+vlsrkm/sstat.errorfloatnullableH13CO+TA*? Antenna temperature for H^13^CO^+^Kphot.antennaTempfloatnullablee_H13CO+TA*? uncertainty on H13CO+TA*Kstat.errorfloatnullableH13CO+dv? Line width for H^13^CO^+^km/sspect.line.widthfloatnullablee_H13CO+dv? uncertainty on H13CO+dvkm/sstat.errorfloatnullable13CSvlsr? Line velocity for ^13^CSkm/sphys.veloc;pos.lsrfloatnullablee_13CSvlsr? uncertainty on 13CSvlsrkm/sstat.errorfloatnullable13CSTA*? Antenna temperature for ^13^CSKphot.antennaTempfloatnullablee_13CSTA*? uncertainty on 13CSTA*Kstat.errorfloatnullable13CSdv? Line width for ^13^CSkm/sspect.line.widthfloatnullablee_13CSdv? uncertainty on 13CSdvkm/sstat.errorfloatnullableHN13Cvlsr? Line velocity for HN^13^Ckm/sphys.veloc;pos.lsrfloatnullablee_HN13Cvlsr? uncertainty on HN13Cvlsrkm/sstat.errorfloatnullableHN13CTA*? Antenna temperature for HN^13^CKphot.antennaTempfloatnullablee_HN13CTA*? uncertainty on HN13CTA*Kstat.errorfloatnullableHN13Cdv? Line width for HN^13^Ckm/sspect.line.widthfloatnullablee_HN13Cdv? uncertainty on HN13Cdvkm/sstat.errorfloatnullableSiOvlsr? Line velocity for SiOkm/sphys.veloc;pos.lsrfloatnullablee_SiOvlsr? uncertainty on SiOvlsrkm/sstat.errorfloatnullableSiOTA*? Antenna temperature for SiOKphot.antennaTempfloatnullablee_SiOTA*? uncertainty on SiOTA*Kstat.errorfloatnullableSiOdv? Line width for SiOkm/sspect.line.widthfloatnullablee_SiOdv? uncertainty on SiOdvkm/sstat.errorfloatnullableHNCOvlsr? Line velocity for HNCOkm/sphys.veloc;pos.lsrfloatnullablee_HNCOvlsr? uncertainty on HNCOvlsrkm/sstat.errorfloatnullableHNCOTA*? Antenna temperature for HNCOKphot.antennaTempfloatnullablee_HNCOTA*? uncertainty on HNCOTA*Kstat.errorfloatnullableHNCOdv? Line width for HNCOkm/sspect.line.widthfloatnullablee_HNCOdv? uncertainty on HNCOdvkm/sstat.errorfloatnullableCH3CNvlsr? Line velocity for CH_3_CNkm/sphys.veloc;pos.lsrfloatnullablee_CH3CNvlsr? uncertainty on CH3CNvlsrkm/sstat.errorfloatnullableCH3CNTA*? Antenna temperature for CH_3_CNKphot.antennaTempfloatnullablee_CH3CNTA*? uncertainty on CH3CNTA*Kstat.errorfloatnullableCH3CNdv? Line width for CH_3_CNkm/sspect.line.widthfloatnullablee_CH3CNdv? uncertainty on CH3CNdvkm/sstat.errorfloatnullable