J/A+A/653/A108ivo://CDS.VizieR/J/A+A/653/A108doi:10.26093/cds/vizier.36530108CDSSchneider N.Roellig M.Polehampton E.,Comeron F.Djupvik A.A.,Makai Z.Buchbender C.Simon R.Bontemps S.Guesten R.White G.,Okada Y.Parikka A.Rothbart N.2022-01-19T09:07:30Z2021-09-16T08:19:44ZCDS support team

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

cds-question@unistra.frinterstellar-cloudsh-ii-regionsinterstellar-mediumspectroscopyradio-spectroscopyIRAS 20319+3958 in Cygnus X South is a rare example of a free-floating globule (mass ~240M_{sun}_, length ~1.5pc) with an internal HII region created by the stellar feedback of embedded intermediate-mass stars, in particular, one Herbig Be star. In Schneider et al. (2012A&A...542L..18S) and Djupvik et al. (2017A&A...599A..37D, Cat. J/A+A/599/A37), we proposed that the emission of the far-infrared (FIR) lines of [CII] at 158um and [OI] at 145um in the globule head are mostly due to an internal photodissociation region (PDR). Here, we present a Herschel/HIFI [CII] 158um map of the whole globule and a large set of other FIR lines (mid-to high-J CO lines observed with Herschel/PACS and SPIRE, the [OI] 63um line and the ^12^CO 16->15 line observed with upGREAT on SOFIA), covering the globule head and partly a position in the tail. The [CII] map revealed that the whole globule is probably rotating. Highly collimated, high-velocity [CII] emission is detected close to the Herbig Be star. We performed a PDR analysis using the KOSMA-{tau}PDR code for one position in the head and one in the tail. The observed FIR lines in the head can be reproduced with a two-component model: an extended, non-clumpy outer PDR shell and a clumpy, dense, and thin inner PDR layer, representing the interface between the HII region cavity and the external PDR. The modelled internal UV field of ~2500Go is similar to what we obtained from the Herschel FIR fluxes, but lower than what we estimated from the census of the embedded stars. External illumination from the ~30pc distant Cyg OB2 cluster, producing an UV field of ~150-600Go as an upper limit, is responsible for most of the [CII] emission. For the tail, we modelled the emission with a non-clumpy component, exposed to a UV-field of around 140Go.2021A&A...653A.108Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/653/A108CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/653/A108https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/653/A108http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/653/A108https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/653/A108https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/653/A108http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/653/A108GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/653/A108/list (List of fits files)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/653/A108/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/653/A108/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/653/A108/list?GETtext/xml+votable180.050000true308.4583140.124550.0055555555555555566/14670https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/653/A108?format=asciiMillimeterdefaultJ/A+A/653/A108/listList of fits filesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintNz? Number of slices for the datacubemeta.numberintnullablebVRADVRAD or lower value of VRAD intervalm/sphys.velocdoubleBVRAD? Upper value of VRAD intervalm/sphys.velocfloatnullabledVRAD? VRAD resolutionm/sspect.resolutionfloatnullablesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar