English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Taking off the edge – simultaneous filament and end core formation

MPS-Authors
/persons/resource/persons287108

Hoemann,  E.
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4602

Burkert,  A.
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Heigl, S., Hoemann, E., & Burkert, A. (2022). Taking off the edge – simultaneous filament and end core formation. Monthly Notices of the Royal Astronomical Society, 517(4), 5272-5280. doi:10.1093/mnras/stac3110.


Cite as: https://hdl.handle.net/21.11116/0000-000C-A26D-3
Abstract
Simulations of idealized star-forming filaments of finite length typically show core growth that is dominated by two cores forming at its respective end. The end cores form due to a strong increasing acceleration at the filament ends that leads to a sweep-up of material during the filament collapse along its axis. As this growth mode is typically faster than any other core formation mode in a filament, the end cores usually dominate in mass and density compared to other cores forming inside a filament. However, observations of star-forming filaments do not show this prevalence of cores at the filament ends. We explore a possible mechanism to slow the growth of the end cores using numerical simulations of simultaneous filament and embedded core formation, in our case a radially accreting filament forming in a finite converging flow. While such a set-up still leads to end cores, they soon begin to move inwards and a density gradient is formed outside of the cores by the continued accumulation of material. As a result, the outermost cores are no longer located at the exact ends of the filament and the density gradient softens the inward gravitational acceleration of the cores. Therefore, the two end cores do not grow as fast as expected and thus do not dominate over other core formation modes in the filament.