62 citations · 278 across the 13 of their papers we have counts for
13 papers
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…
Absorption and Self-Absorption of [C II] and [O I] Far Infrared Lines Towards a Bright Bubble in the Nessie Infrared Dark Cloud
J. M. Jackson, J. S. Whitaker, E. T. Chambers +15
Using the upGREAT instrument on SOFIA, we have imaged [C II] 157.74 and [O I] 63.18 micron line emission from a bright photodissociation region (PDR) associated with an ionized ``b…
Identifying physical structures in our Galaxy with Gaussian Mixture Models: An unsupervised machine learning technique
M. Tiwari, R. Kievit, S. Kabanovic +14
We explore the potential of the Gaussian Mixture Model (GMM), an unsupervised machine learning method, to identify coherent physical structures in the ISM. The implementation we pr…
SOFIA FEEDBACK survey: PDR diagnostics of stellar feedback in different regions of RCW 49
M. Tiwari, M. Wolfire, M. W. Pound +13
We quantified the effects of stellar feedback in RCW 49 by determining the physical conditions in different regions using the [CII] 158 m and [OI] 63 m observations from SOFI…
The SOFIA FEEDBACK Legacy Survey: Dynamics and mass ejection in the bipolar HII region RCW 36
L. Bonne, N. Schneider, P. García +20
We present [CII] 158 m and [OI] 63 m observations of the bipolar HII region RCW 36 in the Vela C molecular cloud, obtained within the SOFIA legacy project FEEDBACK, which is…
FEEDBACK from the NGC7538 HII region
H. Beuther, N. Schneider, R. Simon +10
Context: How do expanding HII regions interact with their environmental cloud? This is one of the central questions driving the SOFIA legacy program FEEDBACK. Here, we present a ca…
Self-absorption in [CII], CO, and HI in RCW120. Building up a geometrical and physical model of the region
S. Kabanovic, N. Schneider, V. Ossenkopf-Okada +19
Revealing the 3D dynamics of HII regions and their associated molecular clouds is important for understanding the longstanding problem as to how stellar feedback affects the densit…
Stellar feedback and triggered star formation in the prototypical bubble RCW 120
Matteo Luisi, Loren D. Anderson, Nicola Schneider +17
Radiative and mechanical feedback of massive stars regulates star formation and galaxy evolution. Positive feedback triggers the creation of new stars by collecting dense shells of…
SOFIA FEEDBACK survey: exploring the dynamics of the stellar wind driven shell of RCW 49
M. Tiwari, R. Karim, M. W. Pound +13
We unveil the stellar wind driven shell of the luminous massive star-forming region of RCW 49 using SOFIA FEEDBACK observations of the [CII] 158 m line. The complementary datase…
FEEDBACK: a SOFIA Legacy Program to Study Stellar Feedback in Regions of Massive Star Formation
N. Schneider, R. Simon, C. Guevara +37
FEEDBACK is a SOFIA legacy program dedicated to study the interaction of massive stars with their environment. It performs a survey of 11 galactic high mass star forming regions in…
[CII] 158 μm self-absorption and optical depth effects
C. Guevara, J. Stutzki, V. Ossenkopf-Okada +7
Context. The [CII] 158 μm far-infrared (FIR) fine-structure line is one of the most important cooling lines of the star-forming interstellar medium (ISM). High spectral resolution…
First detection of [13CII] in the Large Magellanic Cloud
Yoko Okada, Ronan Higgins, Volker Ossenkopf-Okada +3
[13CII] observations in several Galactic sources show that the fine-structure [12CII] emission is often optically thick (the optical depths around 1 to a few). The aim of our study…
Disentangling the excitation conditions of the dense gas in M17 SW
J. P. Pérez-Beaupuits, R. Güsten, M. Spaans +7
We probe the chemical and energetic conditions in dense gas created by radiative feedback through observations of multiple CO, HCN and HCO transitions toward the dense core of…