High resolution spectroscopic study of the Halo PNe: the case of H 4 1

We present the latest observational results on the halo PN, H 4-1 (PN G049.3+88.1). The H$₂$ 1-0 S(1) 2.122 $μ$m emission image of H 4-1 showed the existence of an equatorial disk with two outer arcs in this object. In order to reveal the internal kinematics making this complex structure, we performed spatial and spectral high-resolution spectroscopy with the HDS (High Dispersion Spectrograph) of the Subaru 8.2m telescope. The HDS observational results showed the presence of a high-velocity ($\ge$ 40 km s$^{-1}$) collimated outflow.