What can we learn about stellar activity cycles from ZDI?

Victor See; M. Jardine; A. Vidotto; J.-F. Donati; S. Boro Saikia; J. Bouvier; R. Fares; C. Folsom; S. Gregory; G. Hussain; S. Jeffers; S. Marsden; J. Morin; C. Moutou; J. D. do Nascimento; P. Petit; I. Waite; +BCool Collaboration

doi:10.5281/zenodo.156542

What can we learn about stellar activity cycles from ZDI?

Victor See, M. Jardine, A. Vidotto, J.-F. Donati, S. Boro Saikia, J. Bouvier, R. Fares, C. Folsom, S. Gregory, G. Hussain, S. Jeffers, S. Marsden, J. Morin, C. Moutou, J. D. do Nascimento, P. Petit, I. Waite, +BCool Collaboration

School of Physics and Astronomy

Research output: Contribution to conference › Paper › peer-review

Abstract

It is known that activity cycles, similar to the 11 year cycle of the Sun, can exist on other stars. Previous work suggests that stars may lie on two branches in a cycle period vs rotation period diagram though there is no definitive explanation for why this should be the case.Fundamentally, activity cycles occur as a result of the underlying dynamo. Indeed, a great deal has been learnt about the Sun's activity cycle by studying how its magnetic field evolves over each activity cycle. In the same way, we should be able to learn about the activity cycles of other stars by studying their magnetic field properties. In this talk, I will present new insights into stellar activity cycles by analysing the magnetic maps of stars that are known to present activity cycles. I will show that stars along each of the branches appear to have different magnetic field topologies.

Original language	English
DOIs	https://doi.org/10.5281/zenodo.156542
Publication status	Published - 1 Aug 2016
Event	19th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun (CS19) - Uppsala, Sweden Duration: 6 Jun 2016 → 10 Jun 2016 Conference number: 19 http://coolstars19.com/

Workshop

Workshop	19th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun (CS19)
Abbreviated title	CS19
Country/Territory	Sweden
City	Uppsala
Period	6/06/16 → 10/06/16
Internet address	http://coolstars19.com/

Access to Document

10.5281/zenodo.156542Licence: CC BY

Speaker15_See_CS19
Copyright the Author(s) 2016. Made available under a Creative Commons Attribution 4.0 license https://creativecommons.org/licenses/by/4.0/
Final published version, 2.79 MBLicence: CC BY

http://adsabs.harvard.edu/abs/2016csss.confE..25S

Astronomy at St Andrews 2015-2018: Astronomy at St Andrews 2015-2018
Jardine, M. M. (PI), Cameron, A. C. (CoI), Cyganowski, C. J. (CoI), Horne, K. D. (CoI) & Wood, K. (CoI)
Science & Technology Facilities Council
1/04/15 → 31/03/18
Project: Standard

Cite this

See, V., Jardine, M., Vidotto, A., Donati, J.-F., Boro Saikia, S., Bouvier, J., Fares, R., Folsom, C., Gregory, S., Hussain, G., Jeffers, S., Marsden, S., Morin, J., Moutou, C., do Nascimento, J. D., Petit, P., Waite, I., & +BCool Collaboration (2016). What can we learn about stellar activity cycles from ZDI?. Paper presented at 19th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun (CS19), Uppsala, Sweden. https://doi.org/10.5281/zenodo.156542

@conference{cd428981441e4272acf9a8a44ef8b0a5,

title = "What can we learn about stellar activity cycles from ZDI?",

abstract = "It is known that activity cycles, similar to the 11 year cycle of the Sun, can exist on other stars. Previous work suggests that stars may lie on two branches in a cycle period vs rotation period diagram though there is no definitive explanation for why this should be the case.Fundamentally, activity cycles occur as a result of the underlying dynamo. Indeed, a great deal has been learnt about the Sun's activity cycle by studying how its magnetic field evolves over each activity cycle. In the same way, we should be able to learn about the activity cycles of other stars by studying their magnetic field properties. In this talk, I will present new insights into stellar activity cycles by analysing the magnetic maps of stars that are known to present activity cycles. I will show that stars along each of the branches appear to have different magnetic field topologies.",

author = "Victor See and M. Jardine and A. Vidotto and J.-F. Donati and {Boro Saikia}, S. and J. Bouvier and R. Fares and C. Folsom and S. Gregory and G. Hussain and S. Jeffers and S. Marsden and J. Morin and C. Moutou and {do Nascimento}, {J. D.} and P. Petit and I. Waite and {+BCool Collaboration}",

year = "2016",

month = aug,

day = "1",

doi = "10.5281/zenodo.156542",

language = "English",

note = "19th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun (CS19), CS19 ; Conference date: 06-06-2016 Through 10-06-2016",

url = "http://coolstars19.com/",

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See, V, Jardine, M, Vidotto, A, Donati, J-F, Boro Saikia, S, Bouvier, J, Fares, R, Folsom, C, Gregory, S, Hussain, G, Jeffers, S, Marsden, S, Morin, J, Moutou, C, do Nascimento, JD, Petit, P, Waite, I & +BCool Collaboration 2016, 'What can we learn about stellar activity cycles from ZDI?', Paper presented at 19th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun (CS19), Uppsala, Sweden, 6/06/16 - 10/06/16. https://doi.org/10.5281/zenodo.156542