Publication of Astronomical Observatory of Belgrade, Vol. 105, 2024, Page 22, https://doi.org/10.69646/14sbac19a
BOOK OF ABSTRACTS: XIV Serbian-Bulgarian Astronomical Conference, 23 - 27 September, 2024, Vrnjačka Banja, Serbia. Editors: Milan S. Dimitrijević, Evgeni Semkov, Zoran Simić, Goran Damljanović, Momchil Dechev

Probability distribution functions of mass- (ρ-PDF) and column density (N-PDF) in star-forming regions often display one or multiple power-law tails (PLT) in the high-density range. The correct PLT extraction is of key significance for understanding morphological and dynamical structure of star-forming regions since the PDF properties can be directly linked to the role of different factors in the star formation process: gravity, turbulence, magnetic fields, etc. Many observations indicate that the PLT regime in the N-PDF corresponds to highly fragmented, filamentary regions in a star-forming cloud – thus, it is interesting to compare N- PDFs of small-scale structures extracted in those areas with the N-PDF of the whole cloud. We present analyses of the N-PDFs in Galactic regions of various star-forming activity obtained from Herschel data, by use of a novel method (Guang-Xing Li 2022) for decomposion of a map into multiple components containing structures of different size range (scale) and applying the PLT extraction technique by Veltchev et al. (2019, 2024).