5 papers
Oxygen in the protostellar clump OMC-2 FIR4
Jorma Harju, Paola Caselli, Rolf Güsten +6
Atomic oxygen (OI), OH, H2O, and CO are the main carriers of oxygen in dense interstellar gas and important coolants of shocks associated with protostellar outflows. We determine t…
SOFIA FEEDBACK Survey: The Eagle Nebula in [C II] and Molecular Lines
Ramsey L. Karim, Marc W. Pound, Alexander G. G. M. Tielens +15
We characterize the physical conditions and energy budget of the M16 H II region using SOFIA FEEDBACK observations of the [C II] 158 m line. The O stars in the $\sim 10^{4}~{\r…
Measuring Interstellar Carbon Abundance via 158 um [CII] Absorption with SOFIA -- A Potential Detection, and Proof-of-Concept for Depletion Studies with Future Far-IR Facilities
Christopher J. R. Clark, Julia. C. Roman-Duval, Suzanne C. Madden Marc Mertens +4
Carbon plays key roles in the InterStellar Medium (ISM) -- as a constituent of dust, as the carrier of the dominant far-infrared cooling line, and as a component of various importa…
SOFIA/upGREAT imaging spectroscopy of the [C II] 158 um fine structure line toward the Sgr A region in the Galactic center
A. I. Harris, R. Güsten, M. A. Requena-Torres +8
We present SOFIA/upGREAT velocity-resolved spectral imaging and analysis of the 158 um [C II] spectral line toward the central 80 by 43\,pc region of the Central Molecular Zone of…
The [OI] fine structure line profiles in Mon R2 and M17 SW: the puzzling nature of cold foreground material identified by [12CII] self-absorption
C. Guevara, J. Stutzki V. Ossenkopf-Okada, U. Graf +8
Context. Recent studies of the optical depth comparing [12CII] and [13CII] line profiles in Galactic star-forming regions revealed strong self-absorption in [12CII] by low excitati…