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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.…
Physics and Chemistry of Radiation Driven Cloud Evolution. [C II] Kinematics of IC 59 and IC 63
Miranda Caputo, Archana Soam, B-G Andersson +5
We used high-resolution [C II] 158 m mapping of two nebulae IC 59 and IC 63 from SOFIA/upGREAT in conjunction with ancillary data on the gas, dust, and polarization to probe the…
Atomic oxygen abundance toward Sagittarius B2
Dariusz C. Lis, Paul F. Goldsmith, Rolf Güsten +4
A substantial fraction of oxygen in diffuse clouds is unaccounted for by observations and is postulated to be in an unknown refractory form, referred to as unidentified depleted ox…
An APEX study of molecular outflows in FUor-type stars
Fernando Cruz-Sáenz de Miera, Ágnes Kóspál, Péter Ábrahám +4
FU Orionis-type objects (FUors) are low-mass pre-main-sequence objects which go through a short-lived phase (~100 years) of increased mass accretion rate (from 10^-8 to 10^-4 M_sun…