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Understanding star formation in molecular clouds: III. Probability distribution functions of molecular lines in Cygnus X

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The probability distribution function of column density (N-PDF) serves as a powerful tool to characterise the various physical processes that influence the structure of molecular clouds. Studies that use extinction maps or H2 column-density maps (N) that are derived from dust show that star-forming...

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Main Authors: Schneider, Nicola (Author) , Bontemps, S. (Author) , Motte, F. (Author) , Ossenkopf, V. (Author) , Klessen, Ralf S. (Author) , Simon, R. (Author) , Fechtenbaum, S. (Author) , Herpin, F. (Author) , Tremblin, P. (Author) , Csengeri, T. (Author) , Myers, P. C. (Author) , Hill, T. (Author) , Cunningham, M. (Author) , Federrath, C. (Author)
Format: Article (Journal)
Language:English
Published: 19 February 2016
In: Astronomy and astrophysics
Year: 2016, Volume: 587
ISSN:1432-0746
DOI:10.1051/0004-6361/201527144
Online Access:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/201527144
Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2016/03/aa27144-15/aa27144-15.html
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Author Notes:N. Schneider, S. Bontemps, F. Motte, V. Ossenkopf, R.S. Klessen, R. Simon, S. Fechtenbaum, F. Herpin, P. Tremblin, T. Csengeri, P.C. Myers, T. Hill, M. Cunningham, and C. Federrath
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Summary:The probability distribution function of column density (N-PDF) serves as a powerful tool to characterise the various physical processes that influence the structure of molecular clouds. Studies that use extinction maps or H2 column-density maps (N) that are derived from dust show that star-forming clouds can best be characterised by lognormal PDFs for the lower N range and a power-law tail for higher N, which is commonly attributed to turbulence and self-gravity and/or pressure, respectively.
Item Description:Gesehen am 20.05.2020
Physical Description:Online Resource
ISSN:1432-0746
DOI:10.1051/0004-6361/201527144

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