%0 Journal Article %1 citeulike:14014767 %A Mengel, M. W. %A Fares, R. %A Marsden, S. C. %A Carter, B. D. %A Jeffers, S. V. %A Petit, P. %A Donati, J. F. %A Folsom, C. P. %A Collaboration, BCool %D 2016 %K imported %R 10.1093/mnras/stw828 %T The Evolving Magnetic Topology of \$\tau\$ Boötis %U http://dx.doi.org/10.1093/mnras/stw828 %X We present six epochs of spectropolarimetric observations of the hot-Jupiter-hosting star \$\tau\$ Boötis that extend the exceptional previous multi-year data set of its large-scale magnetic field. Our results confirm that the large-scale magnetic field of \$\tau\$ Boötis varies cyclicly, with the observation of two further magnetic reversals; between December 2013 and May 2014 and between January and March 2015. We also show that the field evolves in a broadly solar-type manner in contrast to other F-type stars. We further present new results which indicate that the chromospheric activity cycle and the magnetic activity cycles are related, which would indicate a very rapid magnetic cycle. As an exemplar of long-term magnetic field evolution, \$\tau\$ Boötis and this longterm monitoring campaign presents a unique opportunity for studying stellar magnetic cycles.

@article{citeulike:14014767, abstract = {{We present six epochs of spectropolarimetric observations of the hot-Jupiter-hosting star \$\tau\$ Bo\"otis that extend the exceptional previous multi-year data set of its large-scale magnetic field. Our results confirm that the large-scale magnetic field of \$\tau\$ Bo\"otis varies cyclicly, with the observation of two further magnetic reversals; between December 2013 and May 2014 and between January and March 2015. We also show that the field evolves in a broadly solar-type manner in contrast to other F-type stars. We further present new results which indicate that the chromospheric activity cycle and the magnetic activity cycles are related, which would indicate a very rapid magnetic cycle. As an exemplar of long-term magnetic field evolution, \$\tau\$ Bo\"otis and this longterm monitoring campaign presents a unique opportunity for studying stellar magnetic cycles.}}, added-at = {2019-03-25T08:20:55.000+0100}, archiveprefix = {arXiv}, author = {Mengel, M. W. and Fares, R. and Marsden, S. C. and Carter, B. D. and Jeffers, S. V. and Petit, P. and Donati, J. F. and Folsom, C. P. and Collaboration, BCool}, biburl = {https://www.bibsonomy.org/bibtex/20eaa00f00e8c454f7f2cf5b51541e08d/ericblackman}, citeulike-article-id = {14014767}, citeulike-linkout-0 = {http://arxiv.org/abs/1604.02501}, citeulike-linkout-1 = {http://arxiv.org/pdf/1604.02501}, citeulike-linkout-2 = {http://dx.doi.org/10.1093/mnras/stw828}, day = 8, doi = {10.1093/mnras/stw828}, eprint = {1604.02501}, interhash = {ec36941ebfc837f7370153b69e6b42c8}, intrahash = {0eaa00f00e8c454f7f2cf5b51541e08d}, keywords = {imported}, month = apr, posted-at = {2016-04-18 08:23:51}, priority = {2}, timestamp = {2019-03-25T08:20:55.000+0100}, title = {{The Evolving Magnetic Topology of \$\tau\$ Bo\"otis}}, url = {http://dx.doi.org/10.1093/mnras/stw828}, year = 2016 }