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Cited by 219

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

Differential Rotation and Turbulence in Extended H i Disks

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Sellwood, J. A., Balbus, Steven A.·1999·The Astrophysical Journal
DOI 10.1086/306728
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Abstract

When present, extended disks of neutral hydrogen around spiral galaxies show a remarkably uniform velocity dispersion of ~6 km s -1 . Since stellar winds and supernovae are largely absent in such regions, neither the magnitude nor the constancy of this number can be accounted for in the classical picture in which interstellar turbulence is driven by stellar energy sources. Here we suggest that magnetic fields with strengths of a few microgauss in these extended disks allow energy to be extracted from galactic differential rotation through MHD-driven turbulence. The magnitude and constancy of the observed velocity dispersion may be understood if its value is Alfvénic. Moreover, by providing a simple explanation for a lower bound to the gaseous velocity fluctuations, MHD processes may account for the sharp outer edge to star formation in galaxy disks.

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Citations

Cites

  • Synthetic properties of starburst galaxies

    Leitherer, C., & Heckman, T. M. (1995) · The Astrophysical Journal Supplement Series · doi:10.1086/192112 · Cited by 672 · cited 1×

    “A high estimate for the SNR for this SFR is 10−12 SN pc−2 yr−1 (e.g. Leitherer & Heckman 1995).”
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  • The galactic fountain of high-velocity clouds

    Bregman, J. N. (1980) · The Astrophysical Journal · doi:10.1086/157776 · Cited by 610 · cited 1×

    “Infall models include the returns from a galactic fountain (Bregman 1980; Schulman et al. 1996), or chimney (Norman & Ikeuchi 1989), or simply the direct accretion of external intergalactic matter (Tóth & Ostriker 1992; Kamphuis & Sancisi 1993).”
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Metadata

Authors
Sellwood, J. A., & Balbus, S. A.
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
1999-02
Volume
511
Issue
2
Pages
660-665
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1086/306728
OpenAlex
W2069271107
Cited by
219
References
2
FWCI
8.00
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Differential Rotation and Turbulence in Extended H i Disks. https://app.cochat.ai/papers/10.1086/306728
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Sellwood, J. A., & Balbus, S. A. (1999). Differential Rotation and Turbulence in Extended H i Disks. The Astrophysical Journal. https://doi.org/10.1086/306728

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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