J/A+A/590/A131ivo://CDS.VizieR/J/A+A/590/A131doi:10.26093/cds/vizier.35900131CDSAbreu-Vicente J.Ragan S.Kainulainen J.Henning T.Beuther H.,Johnston K.2016-05-31T07:20:41Z2016-05-31T08:14:53ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyastrophysical-masersradio-astronomymolecular-cloudsh-ii-regionsyoung-stellar-objectsFilamentary structures are common morphological features of the cold, molecular interstellar medium (ISM). Recent studies have discovered massive, hundred-parsec-scale filaments that may be connected to the large-scale, Galactic spiral arm structure. Addressing the nature of these giant molecular filaments (GMFs) requires a census of their occurrence and properties. We perform a systematic search of GMFs in the fourth Galactic quadrant and determine their basic physical properties. We perform a systematic search of GMFs in the fourth Galactic quadrant and determine their basic physical properties. Methods. We identify GMFs based on their dust extinction signatures in the near- and mid-infrared and the velocity structure probed by ^13^CO line emission. We use the ^13^CO line emission and ATLASGAL dust emission data to estimate the total and dense gas masses of the GMFs. We combine our sample with an earlier sample from literature and study the Galactic environment of the GMFs.2016A&A...590A.131Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/590/A131CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/416/1764 : H_2_O Southern Galactic Plane Survey (HOPS) (Walsh+, 2011)J/MNRAS/426/1972 : H_2_O Southern Galactic Plane Survey HOPS II (Purcell+ 2012)J/ApJS/197/25 : MALT90 pilot survey (Foster+, 2011)J/ApJS/208/11 : Red MSX Source Survey: massive protostars (Lumsden+, 2013)J/ApJS/212/1 : The WISE catalog of Galactic HII regions (Anderson+, 2014)J/MNRAS/431/1752 : ATLASGAL 6.7GHz methanol masers (Urquhart+, 2013)J/MNRAS/443/1555 : ATLASGAL massive star forming clumps sample (Urquhart+ 2014)J/A+A/570/A65 : ATLASGAL massive clumps CO depletion (Giannetti+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/590/A131https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/590/A131http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/590/A131https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/590/A131https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/590/A131http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/590/A131GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/590/A131/tablea2 (Dense gas tracers and star-forming signs associated to our GMFs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/590/A131/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/590/A131/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/590/A131/tablea2?GETtext/xml+votable180.050000true197.7453-62.57640.0055555555555555566/28812-28813 28824 41652-41653 41655 41660-41661 41670-41671 41673 41675-41678 41697-41698 41765 41767 41773 41776-41778 41802-41804 41806 42163 42169-42174 42207 42210-42212 42214 42217 42378-42379 42381-42383 42512https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/590/A131?format=asciiRadiodefaultJ/A+A/590/A131/tablea2Dense gas tracers and star-forming signs associated to our GMFsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latvLSRVelocity of the source relative to the local standard of restkm/sphys.veloc;pos.lsrfloatGMFFilament to which the source is associatedmeta.id.assoccharObject/lineIf object, kind of source. If line, tracer on which the source is identified (1)src.classSurveySurvey to which the data of the source belongs tometa.notecharr_SurveyReference of the survey (2)meta.ref;pos.frameint_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed