J/A+A/685/A99ivo://CDS.VizieR/J/A+A/685/A99doi:10.26093/cds/vizier.36850099CDSCarniani S.Venturi G.Parlanti E.de Graaff A.Maiolino R.,Arribas S.Bonaventura N.Boyett K.Bunker A.J.Cameron A.J.,Charlot S.Chevallard J.Curti M.Curtis-Lake E.Eisenstein D.J.,Giardino G.Hausen R.Kumari N.Maseda M.V.Nelson E.Perna M.,Rix H.-W.Robertson B.Rodriguez Del Pino B.Sandles L.Scholtz J.,Simmonds C.Smit R.Tacchella S.Uebler H.Williams C.C.Willott C.,Witstok J.2025-05-20T20:01:06Z2024-05-14T11:16:31ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-astronomyspectroscopyWe investigate the incidence and properties of ionised gas outflows in a sample of 52 galaxies with stellar masses between 10^7^M_{sun}_ and 10^9^M_{sun}_ observed with ultra-deep JWST/NIRSpec MSA spectroscopy as part of the JWST Advanced Deep Extragalactic Survey (JADES). The high-spectral resolution (R2700) NIRSpec observations allowed us to identify for the first time the potential signature of outflows in the rest-frame optical nebular lines in low-mass galaxies at z>4. The incidence fraction of ionised outflows, traced by broad components, is about 25-40%, depending on the intensity of the emission lines. The low incidence fraction might be due to both the sensitivity limit and the fact that outflows are not isotropic, but have a limited opening angle, which only results in detection when this is directed toward our line of sight. Evidence for outflows increases slightly with stellar mass and star formation rate. The median velocity and mass-loading factor (i.e. the ratio of the mass outflow rate and star formation rate) of the outflowing ionised gas are 350km/s and eta=2.0^+1.6^_-1.5_, respectively. These are 1.5 and 100 times higher than the typical values observed in local dwarf galaxies. Some of these high-redshift outflows can escape the gravitational potential of the galaxy and dark matter halo and enrich the circumgalactic medium and possibly even the intergalactic medium. Our results indicate that outflows can significantly impact the star formation activity in low-mass galaxies within the first 2Gyr of the Universe2024A&A...685A..99Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/685/A99CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/685/A99https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/685/A99http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/685/A99https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/685/A99https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/685/A99http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/685/A99GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/685/A99/table (List of studied galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/685/A99/table?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/685/A99/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/685/A99/table?GETtext/xml+votable180.050000true53.15009889-27.819706110.0055555555555555566/35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/685/A99?format=asciiInfrareddefaultJ/A+A/685/A99/tableList of studied galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIdNIRSpec identification number of the galaxymeta.id;meta.mainintzRedshiftsrc.redshiftfloatRAJ2000Rigth ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainspShow the spectrummeta.ref.urlcharFileNameName of the spectrum file in subdirectory spmeta.id;meta.filecharSimbadSimbad column added by the CDSmeta.ref.urlchar