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The reliability of observational measurements of column density probability distribution functions

Ossenkopf-Okada, Volker; Csengeri, Timea; Schneider, Nicola; Federrath, Christoph; Klessen, Ralf S.


Context. Probability distribution functions (PDFs) of column densities are an established tool to characterize the evolutionary state of interstellar clouds. Aims. Using simulations, we show to what degree their determination is affected by noise, line-of-sight contamination, field selection, and the incomplete sampling in interferometric measurements. Methods. We solve the integrals that describe the convolution of a cloud PDF with contaminating sources such as noise and line-of-sight...[Show more]

CollectionsANU Research Publications
Date published: 2016-03-11
Type: Journal article
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201628095
Access Rights: Open Access


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