6 papers
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…
[C II]-deficit caused by self-absorption in an ionized carbon-filled bubble in RCW79
Eduard Keilmann, Simon Dannhauer, Slawa Kabanovic +12
Recent spectroscopic observations of the [C II] 158 fine-structure line of ionized carbon (C), using the Stratospheric Observatory for Infrared Astronomy (SOFIA…
Molecular cloud matching in CO and dust in M33 II. Physical properties of giant molecular clouds
Eduard Keilmann, Slawa Kabanovic, Nicola Schneider +8
Understanding mass, size, and surface mass density of giant molecular clouds (GMCs) in galaxies is key to insights into star formation processes. We analyze these in M33 using Hers…
Molecular Cloud Matching in CO and Dust in M33 I. High-Resolution Hydrogen Column Density Maps from Herschel
Eduard Keilmann, Christof Buchbender, Volker Ossenkopf-Okada +7
This study is aimed to contribute to a more comprehensive understanding of the molecular hydrogen distribution in the galaxy M33 by introducing novel methods for generating high an…
First detection of the [CII] 158 micron line in the intermediate-velocity cloud Draco
N. Schneider, V. Ossenkopf-Okada, E. Keilmann +7
High-latitude intermediate-velocity clouds (IVCs) are part of the Milky Way's HI halo and originate from either a galactic fountain process or extragalactic gas infall. They are pa…