Mapping the emission line strengths and kinematics of Supernova Remnant S147 with extensive LAMOST spectroscopic observations

Understand

We present extensive spectroscopic observations of supernova remnant (SNR) S147 collected with the Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST).

• The spectra were carefully sky-subtracted taking into account the complex filamentary structure of S147.
• We have utilized all available LAMOST spectra toward S147, including sky and stellar spectra.
• By measuring the prominent optical emission lines including H{\alpha}, [NII]{\lambda}6584, and [SII]{\lambda}{\lambda}6717,6731, we present maps of radial velocity and line intensity ratio covering the whole nebula of S147 with unprecedented detail.