7 papers
Molecular cloud dispersal traced by the ionized carbon 158 micron line
L. Bonne, N. Schneider, S. Dannhauer +14
Feedback from massive stars in the form of radiation and winds impacts the associated host molecular cloud. Feedback can disperse cloud material and lead to the destruction of the…
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…
Cool dark gas in Cygnus X: The first large-scale mapping of low-frequency carbon recombination lines
Kimberly L. Emig, Pedro Salas, Loren D. Anderson +14
Understanding the transition from atomic gas to molecular gas is critical to explain the formation and evolution of molecular clouds. However, the gas phases involved, cold HI and…
The Diamond Ring in Cygnus X: Advanced stage of an expanding bubble of ionised carbon
Simon M. Dannhauer, Sebastian Vider, Nicola Schneider +18
The "Diamond Ring" in Cygnus X, southwest of the DR21 ridge, is a nearly circular structure of 6 pc in diameter, prominent in FIR emission and enclosed by clumpy molecular cl…
The HI-to-H2 transition in the Draco cloud
Nicola Schneider, Volker Ossenkopf-Okada, Markus Roellig +7
In recent decades, significant attention has been dedicated to analytical and observational studies of the atomic hydrogen (HI) to molecular hydrogen (H2) transition in the interst…
Expansion Signatures in 35 HII Regions traced by SOFIA [CII] Emission
Timothy Faerber, Loren D. Anderson, Matteo Luisi +6
We analyze the expansion signatures of 35 HII regions mapped in [CII] 158 micron emission by the Stratospheric Observatory for Infrared Astronomy (SOFIA). The [CII] emission primar…