2017MNRAS.466.4530C

Using VLBI Exploration of Radio Astrometry, we have conducted multi-epoch observations of the H₂O masers associated with Sharpless 76E. The measured annual parallax is 0.521 ± 0.024 mas corresponding to the distance of 1.92^+0.09_–0.08 kpc. From the parallax measurement, we obtained the peculiar motion of Sh2-76EMM1 (U_MM1, V_MM1, W_MM1) to be (-9 ± 3, 10 ± 4, 6 ± 4) km s^–1and Sh2-76EMM2 (U_MM2, V_MM2, W_MM2) to be (-5 ± 12, 3 ± 14, -21 ± 22) km s^–1, where U, V and W are directed towards the Galactic Centre, in the direction of Galactic rotation and towards the Galactic north pole, respectively. The internal motion of the H₂O masers trace two separate bipolar outflows, one associated with Sh2-76EMM1 and the other with Sh2-76EMM2. The spectral energy distribution (SED) of Sh2-76EMM1 suggests it to be a class I YSO. We have only limited data points for the SED fit of Sh2-76EMM2, therefore can only speculate it to be probably a class II based on its comparative K-band and H-band magnitudes.