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Cited by 359

The DOI matches its Crossref record; 85 of the 85 references it cites were found in a registry or an index.

THE Hα EMISSION OF NEARBY M DWARFS AND ITS RELATION TO STELLAR ROTATION

Open access
Newton, Elisabeth R., Irwin, Jonathan, Charbonneau, David, Berlind, Perry, Calkins, Michael L., Mink, Jessica·2017·The Astrophysical Journal
DOI 10.3847/1538-4357/834/1/85
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Abstract

The high-energy emission from low-mass stars is mediated by the magnetic dynamo. Although the mechanisms by which fully convective stars generate large-scale magnetic fields are not well understood, it is clear that, as for solar-type stars, stellar rotation plays a pivotal role. We present 270 new optical spectra of low-mass stars in the Solar Neighborhood. Combining our observations with those from the literature, our sample comprises 2202 measurements or non-detections of H α emission in nearby M dwarfs. This includes 466 with photometric rotation periods. Stars with masses between 0.1 and 0.6 M ⊙ are well-represented in our sample, with fast and slow rotators of all masses. We observe a threshold in the mass–period plane that separates active and inactive M dwarfs. The threshold coincides with the fast-period edge of the slowly rotating population, at approximately the rotation period at which an era of rapid rotational evolution appears to cease. The well-defined active/inactive boundary indicates that H α activity is a useful diagnostic for stellar rotation period, e.g., for target selection for exoplanet surveys, and we present a mass-period relation for inactive M dwarfs. We also find a significant, moderate correlation between L H α /L bol and variability amplitude: more active stars display higher levels of photometric variability. Consistent with previous work, our data show that rapid rotators maintain a saturated value of L H α /L bol. Our data also show a clear power-law decay in L H α /L bol with Rossby number for slow rotators, with an index of −1.7 ± 0.1.

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Metadata

Authors
Newton, E. R., Irwin, J., Charbonneau, D., Berlind, P., Calkins, M. L., & Mink, J.
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2017-01-01
Volume
834
Issue
1
Pages
85
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.3847/1538-4357/834/1/85
OpenAlex
W2565396336
Cited by
359
References
85
FWCI
18.92
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: THE Hα EMISSION OF NEARBY M DWARFS AND ITS RELATION TO STELLAR ROTATION. https://app.cochat.ai/papers/10.3847/1538-4357/834/1/85
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Newton, E. R., Irwin, J., Charbonneau, D., Berlind, P., Calkins, M. L., & Mink, J. (2017). THE Hα EMISSION OF NEARBY M DWARFS AND ITS RELATION TO STELLAR ROTATION. The Astrophysical Journal. https://doi.org/10.3847/1538-4357/834/1/85

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