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IRAS19410+2336 is a young massive star forming region with an intense outflowactivity. We present here spatially resolved NIR spectroscopy which allows usto verify whether the H2 emission detected in this object originates fromthermal emission in shock fronts or from fluorescence excitation bynon-ionizing UV photons. Moreover, NIR spectroscopy also offers the possibilityof studying the characteristics of the putative driving source(s) of the H2emission by the detection of photospheric and circumstellar spectral features,and of the environmental conditions (e.g. extinction). We obtained long-slit,intermediate-resolution, NIR spectra of IRAS19410+2336 using LIRIS. As acomplement, we also obtained J, H and K_s images with the Las Campanas 2.5m DuPont Telescope, and archival mid-infrared (MIR) Spitzer images at 3.6, 4.5, 5.8and 8.0 um. We confirm the shocked nature of the H2 emission, with anexcitation temperature of about 2000 K. We have also identified objects withvery different properties and evolutionary stages in IRAS19410+2336. The mostmassive source at millimeter wavelengths, mm1, with a mass of a few tens ofsolar masses, has a bright NIR (and MIR) counterpart. This suggests thatemission is leaking at these wavelengths. The second most massive millimetersource, mm2, is only detected at lambda > 6 um, suggesting that it could be ahigh-mass protostar still in its main accretion phase. The NIR spectra of someneighboring sources show CO first-overtone bandhead emission which isassociated with neutral material located in the inner regions of thecircumstellar environment of YSOs.

Spatially resolved near-infrared spectroscopy of the massive star-forming region IRAS 19410+2336