J/A+A/597/A74ivo://CDS.VizieR/J/A+A/597/A74doi:10.26093/cds/vizier.35970074CDSJuarez C.Girart J.M.Frau P.Palau A.Estalella R.Morata O.,Alves F.O.Beltran M.T.PadovaniM.2017-01-09T09:08:02Z2017-01-09T10:06:52ZCDS support team

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

cds-question@unistra.frmolecular-cloudsradio-astronomyPre-stellar cores within molecular clouds provide the very initial conditions in which stars are formed. FeSt 1-457 is a prototypical starless core and the most chemically evolved among those isolated, embedded in the most pristine part of the Pipe nebula, the bowl. We use the IRAM 30m telescope and the PdBI to study the chemical and physical properties of the starless core FeSt 1-457 (Core 109) in the Pipe nebula. We fit the hyperfine structure of the N_2_H^+^ (1-0) IRAM 30m data. This allowed us to measure with high precision the velocity field, line widths and opacity and derive the excitation temperature and column density in the core. We used a modified Bonnor-Ebert sphere model adding a temperature gradient towards the center to fit the 1.2mm continuum emission and visual extinction maps. Using this model, we have estimated the abundances of the N_2_H^+^ and the rest of molecular lines detected in the 30GHz wide line survey performed at 3mm with IRAM 30m using ARTIST software.2017A&A...597A..74Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/597/A74CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/597/A74https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/597/A74http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/597/A74https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/597/A74https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/597/A74http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/597/A74GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/597/A74/list (List of fits files)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/597/A74/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/597/A74/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/597/A74/list?GETtext/xml+votable180.050000true263.94736-25.546640.0055555555555555566/28862https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/597/A74?format=asciiRadiodefaultJ/A+A/597/A74/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.numberintnullablesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fits