SANNA, ALBERTOALBERTOSANNAMOSCADELLI, LucaLucaMOSCADELLICESARONI, RiccardoRiccardoCESARONIGODDI, CIRIACOCIRIACOGODDI2022-12-202022-12-20201297811070328421743-9213http://hdl.handle.net/20.500.12386/32790Very Long Baseline Interferometry studies of different maser species observed at multiple epochs allow complementary measurements of the 3-dimensional velocity field of gas close (<~ 10<SUP>3</SUP> AU) to massive young stellar objects. Here, we review our recent results toward the high-mass star-forming region G23.01-0.41, where all the strongest molecular maser transitions known to date cluster within 2000 AU from the center of an hot molecular core and are associated with a so called extended green object. The overall maser kinematics reveals a common outflowing motion from a central object; the details of the spatial distribution and velocity field of each maser species hint at the presence of different dynamical structures: a collimated jet, a wide-angle wind, and a flattened rotating core. We further compare the simultaneous presence of maser emission from different molecular species with a recent evolutionary sequence for masers associated with massive young stellar objects.ELETTRONICOenConference paper10.1017/S17439213120073632-s2.0-84864460075https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/vlbi-maser-kinematics-in-highmass-sfrs-g2301041/55D9A88222BAF4F1313851D214AF55C0https://api.elsevier.com/content/abstract/scopus_id/848644600752012IAUS..287..396SFIS/05 - ASTRONOMIA E ASTROFISICA