Journal article
Formation of structure in molecular clouds: a case study
- Abstract:
- Molecular clouds (MCs) are highly structured and turbulent. Colliding gas streams of atomic hydrogen have been suggested as a possible source of MCs, imprinting the filamentary structure as a consequence of dynamical and thermal instabilities. We present a 2D numerical analysis of MC formation via converging HI flows. Even with modest flow speeds and completely uniform inflows, non-linear density perturbations as possible precursors of MCs arise. Thus, we suggest that MCs are inevitably formed with substantial structure, e.g., strong density and velocity fluctuations, which provide the initial conditions for subsequent gravitational collapse and star formation in a variety of galactic and extragalactic environments.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, pdf, 253.0KB, Terms of use)
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- Publisher copy:
- 10.1086/498413
Authors
- Publisher:
- American Astronomical Society
- Journal:
- Astrophysical Journal Letters More from this journal
- Volume:
- 633
- Issue:
- 2
- Pages:
- L113–L116
- Publication date:
- 2005-10-26
- Acceptance date:
- 2005-09-29
- DOI:
- EISSN:
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2041-8213
- ISSN:
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2041-8205
- Keywords:
- Pubs id:
-
pubs:205767
- UUID:
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uuid:cbf429fe-05e4-48cb-a574-001ce23a380a
- Local pid:
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pubs:205767
- Source identifiers:
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205767
- Deposit date:
-
2012-12-19
Terms of use
- Copyright holder:
- American Astronomical Society
- Copyright date:
- 2005
- Notes:
-
This is the author accepted manuscript following peer review version of the article. The final version is
available online from American Astronomical Society at: https://doi.org/10.1086/498413
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