2016/06/29 by Orlin Stanchev, Stanchev, O. I., Todor V. Veltchev +3 · 1 citation
Chemical Engineering · Earth and Planetary Sciences · Physics and Astronomy · #Advanced Combustion Engine Technologies #Astrophysics and Star Formation Studies #Astrophysics of Galaxies (astro-ph.GA) #Atmospheric Ozone and Climate #FOS: Physical sciences #Solar and Stellar Astrophysics (astro-ph.SR)
paper · pdf · doi:10.48550/arxiv.1606.09227
openalex publication_date 2016/06/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recently Stanchev et al. (2015) proposed a technique to derive density scaling relations in a star-forming region from analysis of the probability distribution function of column density. We address the possible dependence of the outcome on the selection of probe zones, applying the method to Planck dust-opacity data on Orion A. The derived steep scaling relation of mean density with index -1.6 in the molecular cloud (so called `Central filament') points to its self-gravitating nature. The result is reproduced also for large parts of the clouds' vicinity which indicates major role of gravity in the energy balance of the entire star-forming region.