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Magnetic Field and Rotation in Lower Main-Sequence Stars: An Empirical Time-Dependent Magnetic Bode's Relation?

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Baliunas, Sallie, Sokoloff, Dmitry, Soon, Willie·1996·The Astrophysical Journal
DOI 10.1086/309891
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Abstract

We find a significant correlation between the magnetic and rotational moments for a sample of 112 lower main-sequence stars. The rotational moment is calculated from measurements of the rotation period in most of the stars (not from the projected rotational velocity inferred from Doppler broadening). The magnetic moment is computed from a database of homogeneous measurements of the mean level of Ca II H and K emission fluxes sampled for most of the stars over an interval of 25 yr. The slope connecting the logarithm of the magnetic moment and the logarithm of the rotational moment is about +0.5-0.6, with a Pearson correlation coefficient of about +0.9. The scatter of points from the mean relation has a component that is natural and caused by decade-long surface variability.

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Metadata

Authors
Baliunas, S., Sokoloff, D., & Soon, W.
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
1996-02-01
Volume
457
Issue
2
Pages
L99-L102
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1086/309891
OpenAlex
W2088219186
Cited by
182
References
0
FWCI
5.44
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Magnetic Field and Rotation in Lower Main-Sequence Stars: An Empirical Time-Dependent Magnetic Bode's Relation? https://app.cochat.ai/papers/10.1086/309891
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Baliunas, S., Sokoloff, D., & Soon, W. (1996). Magnetic Field and Rotation in Lower Main-Sequence Stars: An Empirical Time-Dependent Magnetic Bode's Relation? The Astrophysical Journal. https://doi.org/10.1086/309891

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

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.