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Stellar magnetism: empirical trends with age and rotation
Open accessAbstract
We investigate how the observed large-scale surface magnetic fields of low-mass stars (∼0.1–2 M⊙), reconstructed through Zeeman–Doppler imaging, vary with age t, rotation and X-ray emission. Our sample consists of 104 magnetic maps of 73 stars, from accreting pre-main sequence to main-sequence objects (1 Myr ≲ t ≲ 10 Gyr). For non-accreting dwarfs we empirically find that the unsigned average large-scale surface field is related to age as t−0.655 ± 0.045. This relation has a similar dependence to that identified by Skumanich, used as the basis for gyrochronology. Likewise, our relation could be used as an age-dating method (‘magnetochronology’). The trends with rotation we find for the large-scale stellar magnetism are consistent with the trends found from Zeeman broadening measurements (sensitive to large- and small-scale fields). These similarities indicate that the fields recovered from both techniques are coupled to each other, suggesting that small- and large-scale fields could share the same dynamo field generation processes. For the accreting objects, fewer statistically significant relations are found, with one being a correlation between the unsigned magnetic flux and rotation period. We attribute this to a signature of star–disc interaction, rather than being driven by the dynamo.
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Cites
Orbital migration of the planetary companion of 51 Pegasi to its present location
Lin, D. N. C., Bodenheimer, P., & Richardson, D. C. (1996) · Nature · doi:10.1038/380606a0 · Cited by 1,235
Queloz, D., Henry, G. W., Sivan, J. P., Baliunas, S. L., Beuzit, J. L., Donahue, R. A., Mayor, M., Naef, D., Perrier, C., & Udry, S. (2001) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20011308 · Cited by 913
Pizzolato, N., Maggio, A., Micela, G., Sciortino, S., & Ventura, P. (2003) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20021560 · Cited by 853
Soderblom, D. R., Hillenbrand, L. A., Jeffries, R. D., Mamajek, E. E., & Naylor, T. (2014) · Protostars and Planets VI · doi:10.2458/azu_uapress_9780816531240-ch010 · Cited by 78
Cited by
Stellar winds on the main-sequence: II. The evolution of rotation and winds
Johnstone, C. P., Güdel, M., Brott, I., & Lüftinger, T. (2015) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201425301 · Cited by 229
THE EVOLUTION OF STELLAR ROTATION AND THE HYDROGEN ATMOSPHERES OF HABITABLE-ZONE TERRESTRIAL PLANETS
Johnstone, C. P., Güdel, M., Stökl, A., Lammer, H., Tu, L., Kislyakova, K. G., Lüftinger, T., Odert, P., Erkaev, N. V., & Dorfi, E. A. (2015) · The Astrophysical Journal · doi:10.1088/2041-8205/815/1/l12 · Cited by 151
Radio emission and mass loss rate limits of four young solar-type stars
Fichtinger, B., Güdel, M., Mutel, R. L., Hallinan, G., Gaidos, E., Skinner, S. L., Lynch, C., & Gayley, K. G. (2017) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201629886 · Cited by 55
Metadata
- Authors
- Vidotto, A. A., Gregory, S. G., Jardine, M., Donati, J. F., Petit, P., Morin, J., Folsom, C. P., Bouvier, J., Cameron, A. C., Hussain, G., Marsden, S., Waite, I. A., Fares, R., Jeffers, S., & do Nascimento, J. D.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2014-05-19
- Volume
- 441
- Issue
- 3
- Pages
- 2361-2374
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2094450965
- Cited by
- 448
- References
- 4
- FWCI
- 22.37
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Vidotto, A. A., Gregory, S. G., Jardine, M., Donati, J. F., Petit, P., Morin, J., Folsom, C. P., Bouvier, J., Cameron, A. C., Hussain, G., Marsden, S., Waite, I. A., Fares, R., Jeffers, S., & do Nascimento, J. D. (2014). Stellar magnetism: empirical trends with age and rotation. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1093/mnras/stu728
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