J/MNRAS/460/4150ivo://CDS.VizieR/J/MNRAS/460/4150doi:10.26093/cds/vizier.74604150CDSRumble D.Hatchell J.Pattle K.Kirk H.Wilson T.Buckle J.,Berry D.S.Broekhoven-Fiene H.Currie M.J.Fich M.Jenness T.,Johnstone D.Mottram J.C.Nutter D.Pineda J.E.Quinn C.Salji C.,Tisi S.Walker-Smith S.Di Francesco J.Hogerheijde M.R.,Ward-Thompson D.Bastien P.Bresnahan D.Butner H.Chen M.,Chrysostomou A.Coude S.Davis C.J.Drabek-Maunder E.Duarte-Cabral A.,Fiege J.Friberg P.Friesen R.Fuller G.A.Graves S.Greaves J.,Gregson J.Holland W.Joncas G.Kirk J.M.Knee L.B.G.Mairs S.,Marsh K.Matthews B.C.Moriarty-Schieven G.Mowat C.Rawlings J.,Richer J.Robertson D.Rosolowsky E.Sadavoy S.Thomas H.Tothill N.,Viti S.White G.J.Wouterloot J.Yates J.Zhu M.2024-08-16T20:17:32Z2017-12-19T15:49:37ZCDS support team

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

cds-question@unistra.frh-ii-regionsyoung-stellar-objectsmillimeter-astronomyphotometrysubmillimeter-astronomystellar-massesWe present SCUBA-2 450{mu}m and 850{mu}m observations of the W40 complex in the Serpens-Aquila region as part of the James Clerk Maxwell Telescope (JCMT) Gould Belt Survey (GBS) of nearby star-forming regions. We investigate radiative heating by constructing temperature maps from the ratio of SCUBA-2 fluxes using a fixed dust opacity spectral index, {beta}=1.8, and a beam convolution kernel to achieve a common 14.8-arcsec resolution. We identify 82 clumps ranging between 10 and 36K with a mean temperature of 20+/-3K. Clump temperature is strongly correlated with proximity to the external OB association and there is no evidence that the embedded protostars significantly heat the dust. We identify 31 clumps that have cores with densities greater than 10^5^cm^-3^. 13 of these cores contain embedded Class 0/I protostars. Many cores are associated with bright-rimmed clouds seen in Herschel 70{mu}m images. From JCMT HARP observations of the ^12^CO 3-2 line, we find contamination of the 850{mu}m band of up to 20 per cent. We investigate the free-free contribution to SCUBA-2 bands from large-scale and ultracompact HII regions using archival VLA data and find the contribution is limited to individual stars, accounting for 9 per cent of flux per beam at 450{mu}m or 12 per cent at 850{mu}m in these cases. We conclude that radiative heating has potentially influenced the formation of stars in the Dust Arc sub-region, favouring Jeans stable clouds in the warm east and fragmentation in the cool west.2016MNRAS.460.4150Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/460/4150CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/725/2485 : X-rays from the star-forming complex W40 (Kuhn+, 2010)J/AJ/140/968 : A cluster of compact radio sources in W40 (Rodriguez+, 2010)J/ApJ/779/113 : IR photometry of YSOs in the W40 region (Mallick+, 2013)J/ApJS/220/11 : SEDs of Spitzer YSOs in the Gould Belt (Dunham+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/460/4150https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/460/4150http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/460/4150https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/460/4150https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/460/4150http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/460/4150GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/460/4150/table2 (*Our composite YSO catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/460/4150/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/460/4150/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/460/4150/table2?GETtext/xml+votable180.050000true277.6380215-2.11823620.005555555555555556Cone search capability for table J/MNRAS/460/4150/table5 (Submillimetre clumps and their respective SCUBA-2 and Herschel fluxes and properties in the W40 complex)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/460/4150/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/460/4150/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/460/4150/table5?GETtext/xml+votable180.050000true277.8375-2.10560.005555555555555556Cone search capability for table J/MNRAS/460/4150/table7 (Dense cores in the W40 complex)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/460/4150/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/460/4150/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/460/4150/table7?GETtext/xml+votable180.050000true277.8375-2.10560.0055555555555555566/30341 30352 303549.459244390355668e-25 2.837779945223663e-21https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/460/4150?format=asciiMillimeterdefaultJ/MNRAS/460/4150/table2*Our composite YSO catalogueSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintName2MASS or CXO name (2MASSHHMMSSss+DDMMSSss, CXOHHMMSS.ss+BBMMSS.s) or position (HH:MM:SS-DD:MM:SS.s)meta.id;meta.maincharClass[0/4] YSO classsrc.classintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainalphaE? Spectroscopic index (1)spect.indexfloatnullableTbolE? Bolometric temperature (1)Kphys.temperatureintnullableJ/MNRAS/460/4150/table5Submillimetre clumps and their respective SCUBA-2 and Herschel fluxes and properties in the W40 complexAreaClump areapixphys.angSizeintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDcoresindicates dense cores data in table 7meta.ref.urlcharSeq[1/82] Sequential numbermeta.recordintprimaryRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainF450Integrated SCUBA-2 flux at 450um over the clump properties (1)Jyphot.flux.density;em.mm.400-750GHzfloatF850Integrated SCUBA-2 flux at 850um over the clump properties (2)Jyphot.flux.density;em.mm.200-400GHzfloatFH70Mean Herschel 70um intensity.MJy/srphot.flux.density;em.IR.30-60umdoubleF21cmMean VLA 21cm intensity at 15 arcsec pixelsJyphot.flux.density;em.IR.8-15umdoubleMassMass (3)solMassphys.massdoublee_Massrms uncertainty on MasssolMassstat.error;phys.massdoubleTempMean temperature as calculated from the temperature mapsKphys.temperature;stat.meandoublee_Temprms uncertainty on Temp (4)Kstat.errordoubleCDPeak column density of the clump (in 10^21^H_2_/cm^2^)1e+21cm**-2phys.columnDensity;stat.maxdoublee_CDrms uncertainty on CD (in 10^21^H_2_/cm^2^) (5)1e+21cm**-2stat.errordoubleDiamFlux weighted effective diameterpcpos.distancedoubleDensAverage volume density of a dense core along the line of sightcm**-3phys.densitydoubleYSODYSO density (YSO per pc^2^) (6)pc**-2phys.densitydoublee_YSODrms uncertainty on YSOpc**-2stat.errordoublesumPROTONumber of protostars per clump (6)meta.numberintMJJean mass (7)solMassphys.massdoublee_MJrms uncertainty on MJsolMassstat.errordoubleM/MJMass ratiophys.mass;arith.ratiodoublee_M/MJrms uncertainty on M/MJstat.errordoubleDistProjected distance between clump and OS1a, the primary ionizing star in the W40 complex OB associationpcpos.distancedoubleJ/MNRAS/460/4150/table7Dense cores in the W40 complexrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/62] Sequential number (Clump ID, W40-SMM), as in table 5meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainMassMasssolMassphys.massdoublee_Massrms uncertainty on MasssolMassstat.error;phys.massdoubleDiamFlux weighted effective diameter (1)pcpos.distancedoubleDensAverage volume density of a dense core along the line of sight (2)cm**-3phys.densitydoublesumPROTO? Number of protostars per clump (3)meta.numberintnullableM/MJMass ratiophys.mass;arith.ratiodoublee_M/MJMass ratiostat.errordoubleSimbadSimbad column added by the CDSmeta.ref.urlchar