126 citations · 353 across the 6 of their papers we have counts for
6 papers
The KOSMA- PDR Model -- I. Recent updates to the numerical model of photo-dissociated regions
M. Röllig, V. Ossenkopf-Okada
Numerical models of Photodissociation Regions (PDRs) are an essential tool to quantitatively understand observations of massive star forming regions through simulations. Few mature…
Herschel/HIFI observations of [CII] and [13CII] in PDRs
V. Ossenkopf, M. Röllig, D. A. Neufeld +5
Recently, we introduced detailed isotopic chemistry into the KOSMA-tau model for photon-dominated regions (PDRs) to give theoretical predictions for the abundance of the carbon iso…
Detection of HF emission from the Orion Bar
F. F. S. van der Tak, V. Ossenkopf, Z. Nagy +3
The clumpy density structure of photon-dominated regions is well established, but the physical properties of the clumps and of the surrounding interclump medium are only approximat…
Strong CH+ J=1-0 emission and absorption in DR21
E. Falgarone, V. Ossenkopf, M. Gerin +30
We report the first detection of the ground-state rotational transition of the methylidyne cation CH+ towards the massive star-forming region DR21 with the HIFI instrument onboard…
Detection of interstellar oxidaniumyl: abundant H2O+ towards the star-forming regions DR21, Sgr B2, and NGC6334
V. Ossenkopf, H. S. P. Müller, D. C. Lis +99
We identify a prominent absorption feature at 1115 GHz, detected in first HIFI spectra towards high-mass star-forming regions, and interpret its astrophysical origin. The character…
HIFI observations of warm gas in DR21: Shock versus radiative heating
V. Ossenkopf, M. Röllig, R. Simon +35
The molecular gas in the DR21 massive star formation region is known to be affected by the strong UV field from the central star cluster and by a fast outflow creating a bright sho…