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Emergence of high-mass stars in complex fiber networks (EMERGE) III. Fiber networks in Orion by Socci, A.; Hacar, A.; Bonanomi, F.; Tafalla, M.; Suri, S. is a scholarly article available to read on EtoBox.

What is Emergence of high-mass stars in complex fiber networks (EMERGE) III. Fiber networks in Orion about?

The Herschel observations unveiled the complex organisation of the interstellar medium in networks of parsec-scale filaments over the past decade. At the same time, networks of fibers have been recognised describing the gas structures in star-forming regions at sub-parsec scales. We aim to investigate the dense gas organisation prior to the formation of stars in sample of 7 star-forming regions within Orion. This EMERGE Early ALMA Survey includes OMC-1/-2/-3/-4 South, LDN 1641N, NGC 2023, and the Flame Nebula, all surveyed at high spatial resolution (4.5'' or $\sim2000$ au) in N$_2$H$^+$ (1$-$0) using ALMA+IRAM-30m observations. We systematically investigated the star-forming gas spatial distribution, its column density variations, its thermal structure, and its internal motions in a wide range of environments. From the analysis of the gas kinematics, we identified and characterised a total of 152 velocity-coherent fibers in our survey, which appear to be the preferred organisational unit for the dense gas in low-, intermediate- and high-mass star-forming regions alike. Despite the uneven density of fibers within these sub-parsec networks, the masses and lengths of these objects sh

Author

Socci, A.; Hacar, A.; Bonanomi, F.; Tafalla, M.; Suri, S.

Published

2024

Language

EN