Rodríguez-Kamenetzky, Adriana R.Adriana R.Rodríguez-KamenetzkyCarrasco-González, CarlosCarlosCarrasco-GonzálezRodríguez, Luis F.Luis F.RodríguezRay, Tom P.Tom P.RaySANNA, ALBERTOALBERTOSANNAMOSCADELLI, LucaLucaMOSCADELLIHoare, MelvinMelvinHoareGalván-Madrid, RobertoRobertoGalván-MadridShang, HsienHsienShangLizano, SusanaSusanaLizanoEislöffel, JochenJochenEislöffelLim, JeremyJeremyLimTorrelles, José M.José M.TorrellesHo, PaulPaulHoFeeney-Johansson, AntonAntonFeeney-Johansson2022-12-152022-12-1520222041-8205http://hdl.handle.net/20.500.12386/32750We report new VLA and e-MERLIN high-resolution and -sensitivity images of the triple radio continuum source in the Serpens star-forming region. These observations allowed us to perform a deep multifrequency, multiepoch study by exploring the innermost regions (≲100 au) of an intermediate-mass young stellar object for the first time, with a physical resolution of ~15 au. The kinematic analysis of knots recently ejected by the protostar indicates that the jet is undergoing episodic variations in velocity. In addition, our multifrequency images reveal striking characteristics, e.g., a highly collimated ionized stream that would be launched at a radial distance of ~0.4 au from the protostar and a narrow (~28 au wide) ionized cavity that would be excited by the interaction of a wide-angle component with the surrounding toroid of infalling material. In light of these results, we propose the scenario in which both a highly collimated jet and a wide-angle wind coexist as the most plausible to explain our observations, either launched by the X-wind or X-plus-disk-wind mechanism.STAMPAenArticle10.3847/2041-8213/ac6fd12-s2.0-85131420225https://iopscience.iop.org/article/10.3847/2041-8213/ac6fd1https://api.elsevier.com/content/abstract/scopus_id/851314202252022ApJ...931L..26RFIS/05 - ASTRONOMIA E ASTROFISICA