Constraining the geometry of the reflection nebula NGC 2023 with [O I]: Emission & Absorption

Bhaswati Mookerjea, Goeran Sandell, Rolf Guesten +3

We have mapped the NGC 2023 reflection nebula in the 63 and 145 micron transitions of [O I] and the 158 micron [C II] spectral lines using the heterodyne receiver upGREAT on SOFIA.…