J/A+A/596/A26ivo://CDS.VizieR/J/A+A/596/A26doi:10.26093/cds/vizier.35960026CDSGonzalez-Garcia B.Manoj P.Watson D.M.Vavrek R.Megeath S.T.,Stutz A.M.Osorio M.Wyrowski F.Fischer W.Tobin J.J.,Sanchez-Portal M.Diaz Rodriguez A.K.Wilson. T.L.2016-11-24T05:49:39Z2016-11-24T06:45:40ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsinfrared-sourcesspectroscopyWe present the first detection of a jet in the far-IR [OI] lines from an intermediate mass protostar. We have carried out a Herschel/PACS spectral mapping study in the [OI] lines of OMC-2 FIR 3 and FIR 4, two of the most luminous protostars in Orion outside of the Orion Nebula. The spatial morphology of the fine structure line emission reveals the presence of an extended photodissociation region (PDR) and a narrow, but intense jet emission connecting the two protostars. The jet seen in [OI] emission is spatially aligned with the Spitzer/IRAC 4.5um jet and the CO (6-5) molecular outflow centered on FIR 3. The mass loss rate derived from the total [OI] 63um line luminosity of the jet is 7.7*10^-6^M_{sun}_/yr, which is more than an order of magnitude higher than that measured for typical low mass class 0 protostars. The implied accretion luminosity is significantly higher than the observed bolometric luminosity of FIR 4, indicating that the [OI] jet is unlikely to be associated with FIR 4. We argue that the peak line emission seen toward FIR 4 originates in the terminal shock produced by the jet driven by FIR 3. The higher mass loss rate that we find for FIR 3 is consistent with the idea that intermediate mass protostars drive more powerful jets than their low-mass counterparts. Our results also call into question the nature of FIR 4.2016A&A...596A..26Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/596/A26CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/556/A57 : Transitions in OMC-2 FIR 4 in the far-IR (Kama+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/596/A26https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/596/A26http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/596/A26https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/596/A26https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/596/A26http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/596/A26GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/596/A26/list (List of fits maps)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/596/A26/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/596/A26/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/596/A26/list?GETtext/xml+votable180.050000true83.8839-5.162750.0055555555555555566/22805https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/596/A26?format=asciiInfraredOpticaldefaultJ/A+A/596/A26/listList of fits mapsrecnoRecord 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.numberintObs.dateObservation datetime.epoch;obscharNExtNumber of extensions in the fits filemeta.numberintsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar