Relationship between molecular cloud structure and density PDFs

Autor:	Stanchev, Orlin, Donkov, Sava, Veltchev, Todor V., Shetty, Rahul
Rok vydání:	2013
Předmět:	Astrophysics - Solar and Stellar Astrophysics Astrophysics - Galaxy Astrophysics
Druh dokumentu:	Working Paper
Popis:	Volume and column density PDFs in molecular clouds are important diagnostics for understanding their general structure. We developed a novel approach to trace the cloud structure by varying the lower PDF cut-off and exploring a suggested mass-density relationship with a power-law index $x^\prime$. The correspondence of x' as a function of spatial scale to the slope of the high-density PDF tail is studied. To validate the proposed model, we use results from hydrodynamical simulations of a turbulent self-gravitating cloud and recent data on dust continuum emission from the Planck mission. Comment: A poster report, presented at the 2013 MPIA summer conference "Phases of the ISM", Heidelberg, July 29 -August 1, 2013
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1308.0261 Zobrazit plný text záznamu View this record from Arxiv