J/A+A/619/A166ivo://CDS.VizieR/J/A+A/619/A166doi:10.26093/cds/vizier.36190166CDSMattern M.Kauffmann J.Csengeri T.Urquhart J.S.Leurini S.,Wyrowski F.Giannetti A.Barnes P.J.,Beuther H.Bronfman L.,Duarte-Cabral A.Henning T.Kainulainen J.Menten K.M.Schisano E.,Schuller F.2018-11-28T08:04:50Z2018-11-21T08:15:54ZCDS support team

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

cds-question@unistra.frinterstellar-mediummolecular-cloudsco-line-emissionAnalyzing the kinematics of filamentary molecular clouds is a crucial step toward understanding their role in the star formation process. Therefore, we study the kinematics of 283 filament candidates in the inner Galaxy, that were previously identified in the ATLASGAL dust continuum data. The ^13^CO(2-1) and C^18^O(2-1) data of the SEDIGISM survey (Structure, Excitation, and Dynamics of the Inner Galactic Inter Stellar Medium) allows us to analyze the kinematics of these targets and to determine their physical properties at a resolution of 30-arcsec and 0.25km/s. To do so, we developed an automated algorithm to identify all velocity components along the line-of-sight correlated with the ATLASGAL dust emission, and derive size, mass, and kinematic properties for all velocity components. We find two-third of the filament candidates are coherent structures in position-position-velocity space. The remaining candidates appear to be the result of a superposition of two or three filamentary structures along the line-of-sight. At the resolution of the data, on average the filaments are in agreement with Plummer-like radial density profiles with a power-law exponent of p~=1.5+/-0.5, indicating that they are typically embedded in a molecular cloud and do not have a well-defined outer radius. Also, we find a correlation between the observed mass per unit length and the velocity dispersion of the filament of m{prop.to}{sigma}_v_^2^. We show that this relation can be explained by a virial balance between self-gravity and pressure. Another possible explanation could be radial collapse of the filament, where we can exclude infall motions close to the free-fall velocity.2018A&A...619A.166Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/619/A166CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/591/A5 : ATLASGAL dense filamentary structures (Li+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/619/A166https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/619/A166http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/619/A166https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/619/A166https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/619/A166http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/619/A166GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/619/A166/table56 (Measured and derived parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/619/A166/table56?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/619/A166/table56?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/619/A166/table56?GETtext/xml+votable180.050000true267.2048-28.64760.0055555555555555565/7206-7207 7228 7278 10453 10543 10556 6/28803 28808-28809 28812-28813 28815 28853 28874-28875 28879 28896-28897 28900-28901 28918-28919 29090-29091 29097 29100-29101 29103 29118 29461 29504 41599 41655 41676 41759 41767 41770 41780 41803-41804 41811 42158-42159 42169-42171 42207 42210-42211 42213-42217 42228-42229 42378-42379 42381-42383 42392-42393 42396-42397 42400 42434-42435 42440-42441 42445 42450-42451 42454-42457 42460-42461 42496 42501 43024https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/619/A166?format=asciiRadiodefaultJ/A+A/619/A166/table56Measured and derived parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDFilament ID, GLLL.lll+BB.bbb_N (fil_id)meta.id;meta.maincharGLONGalactic longitude of the center of the filament (gal_long)degpos.galactic.lonGLATGalactic latitude of the center of the filament (gal_lat)degpos.galactic.latStatusCorrelation with the ATLASGAL emission (status)meta.notecharNcompNumber of detected velocity components in the original filament candidate (n_comp)meta.numberintv13COPeak velocity derived from the ^13^CO average spectrum (velocity_13CO)km/sphys.veloc;stat.maxfloatvC18O? Peak velocity from the C^18^O average spectrum (velocity_C18O)km/sphys.veloc;stat.maxfloatnullables_v13CODispersion of the ^13^CO peak velocities along the skeleton (sig_peak_13CO)km/sphys.veloc;stat.stdevfloats_vC18ODispersion of the C^18^O peak velocities along the skeleton (sig_peak_C18O)km/sphys.veloc;stat.stdevfloatsigmaAverage total velocity dispersion along the skeleton (derived from ^13^CO and C^18^O) (sigma)km/sphys.veloc.dispersion;stat.meanfloatsigma13COAverage ^13^CO velocity dispersion along the skeleton (sigma_13CO)km/sphys.veloc.dispersion;stat.meanfloatsigmaC18O? Average C^18^O velocity dispersion along the skeleton (sigma_C18O)km/sphys.veloc.dispersion;stat.meanfloatnullable<sigma13CO>^13^CO velocity dispersion derived from the average spectrum (sig_aver_13CO)km/sphys.veloc.dispersion;stat.meanfloat<sigmaC18O>? C^18^O velocity dispersion derived from the average spectrum (sig_aver_C18O)km/sphys.veloc.dispersion;stat.meanfloatnullableDist? Distance from the Sun (distance)kpcpos.distance;pos.heliocentricfloatnullableLength? Physical length of the detected skeleton (length)pcphys.angSize;srcfloatnullableLengthAngAngular length of the detected skeleton (angular_length)degphys.angSize;srcfloatMdustatg? Filament mass derived from ATLASGAL emission (M_dust_atg)solMassphys.massfloatnullableMdustatp? Filament mass derived from ATLASGAL+PLANCK emission (M_dust_atp)solMassphys.massdoublenullableMdustatpc? Filament mass derived from corrected ATLASGAL+PLANCK emission (M_dust_atpc)solMassphys.massdoublenullableMgas? Filament mass derived from integrated ^13^CO emission (M_gas)solMassphys.massdoublenullablemobs? Observed line-mass (m_obs)solMass/pcstat.fit.omcfloatnullablemvirCritical, non-thermal line-mass (m_vir)solMass/pcstat.fit.omcintd13COFraction of the skeleton detected in ^13^CO (detection_13CO)stat.fit.paramfloatdC18OFraction of the skeleton detected in C^18^O (detection_C18O)stat.fit.paramfloatFlagEdge[0/1] Skeleton truncated because of the edge of SEDIGISM (edge_flag)meta.code.errorintf_Dist[0/2] indicating the method for the distance estimate (dist_flag) (1)meta.codeint_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexed