The Distance and the near-IR extinction of the Monoceros Supernova
  Remnant
  Supernova remnants (SNRs) embody the information of the influence on dust
properties by the supernova explosion. Based on the color indexes from the
2MASS photometric survey and the stellar parameters from the
SDSS$-$DR12$/$APOGEE and LAMOST$-$DR2$/$LEGUE spectroscopic surveys, the
near-infrared extinction law and the distance of the Monoceros SNR are derived
together with its nearby two nebulas -- the Rosette Nebula and NGC 2264. The
distance is found at the position of the sharp increase of interstellar
extinction with distance and the nebular extinction is calculated by
subtracting the foreground interstellar extinction. The distance of the
Monoceros SNR is determined to be $1.98\,$kpc, larger than previous values.
Meanwhile, the distance of the Rosette Nebula is $1.55\,$kpc, generally
consistent with previous work. The distance between these two nebulas suggests
no interaction between them. The distance of NGC 2264, $1.20\,$kpc, exceeds
previous values. The color excess ratio, $E_{\rm JH}/E_{\rm JK_S}$, is 0.657
for the Monoceros SNR, consistent with the average value 0.652 for the Milky
Way (Xue et al. 2016). The consistency is resulted from that the SNR material
is dominated by interstellar dust rather than the supernova ejecta. $E_{\rm
JH}/E_{\rm JK_S}$ equals to 0.658 for the Rosette Nebula, further proving the
universality of the near-infrared extinction law.
