Zobrazeno 1 - 10
of 21
pro vyhledávání: '"collaboration, the BCool"'
Autor:
Brown, E. L., Jeffers, S. V., Marsden, S. C., Morin, J., Saikia, S. Boro, Petit, P., Jardine, M. M., See, V., Vidotto, A. A., Mengel, M. W., Dahlkemper, M. N., Collaboration, the BCool
Spectropolarimetric data allow for simultaneous monitoring of stellar chromospheric $\log{R^{\prime}_{\rm{HK}}}$ activity and the surface-averaged longitudinal magnetic field, $B_l$, giving the opportunity to probe the relationship between large-scal
Externí odkaz:
http://arxiv.org/abs/2205.03108
Autor:
Brown, E. L., Marsden, S. C., Mengel, M. W., Jeffers, S. V., Millburn, I., Mittag, M., Petit, P., Vidotto, A. A., Morin, J., See, V., Jardine, M., González-Pérez, J. N., Collaboration, the BCool
Studying cool star magnetic activity gives an important insight into the stellar dynamo and its relationship with stellar properties, as well as allowing us to place the Sun's magnetism in the context of other stars. Only 61 Cyg A (K5V) and $\tau$ Bo
Externí odkaz:
http://arxiv.org/abs/2012.05407
Autor:
See, Victor, Matt, Sean P., Finley, Adam J., Folsom, Colin P., Saikia, Sudeshna Boro, Donati, Jean-Francois, Fares, Rim, Hébrard, Élodie M., Jardine, Moira M., Jeffers, Sandra V., Marsden, Stephen C., Mengel, Matthew W., Morin, Julien, Petit, Pascal, Vidotto, Aline A., Waite, Ian A., Collaboration, The BCool
Main sequence low-mass stars are known to spin-down as a consequence of their magnetised stellar winds. However, estimating the precise rate of this spin-down is an open problem. The mass-loss rate, angular momentum-loss rate and the magnetic field p
Externí odkaz:
http://arxiv.org/abs/1910.02129
Autor:
See, Victor, Matt, Sean P., Folsom, Colin P., Saikia, Sudeshna Boro, Donati, Jean-Francois, Fares, Rim, Finley, Adam J., Hebrard, Elodie M., Jardine, Moira M., Jeffers, Sandra V., Lehmann, Lisa T., Marsden, Stephen C., Mengel, Matthew W., Morin, Julien, Petit, Pascal, Vidotto, Aline A., Waite, Ian A., collaboration, The BCool
Low-mass stars are known to have magnetic fields that are believed to be of dynamo origin. Two complementary techniques are principally used to characterise them. Zeeman-Doppler imaging (ZDI) can determine the geometry of the large-scale magnetic fie
Externí odkaz:
http://arxiv.org/abs/1903.05595
Autor:
Saikia, S. Boro, Lueftinger, T., Jeffers, S. V, Folsom, C. P., See, V., Petit, P., Marsden, S. C., Vidotto, A. A., Morin, J., Reiners, A., Guedel, M., collaboration, the BCool
The behaviour of the large-scale dipolar field, during a star's magnetic cycle, can provide valuable insight into the stellar dynamo and associated magnetic field manifestations such as stellar winds. We investigate the temporal evolution of the dipo
Externí odkaz:
http://arxiv.org/abs/1811.11671
Autor:
See, V., Jardine, M., Vidotto, A. A., Donati, J. -F., Saikia, S. Boro, Fares, R., Folsom, C. P., Jeffers, S. V., Marsden, S. C., Morin, J., Petit, P., Collaboration, the BCool
Magnetic activity is known to be correlated to the rotation period for moderately active main sequence solar-like stars. In turn, the stellar rotation period evolves as a result of magnetised stellar winds that carry away angular momentum. Understand
Externí odkaz:
http://arxiv.org/abs/1711.03904
Autor:
Waite, Ian, Marsden, Stephen, Carter, Brad, Petit, Pascal, Jeffers, Sandra, Morin, Julien, Vidotto, Aline, Donati, Jean-Francois, Collaboration, the BCool
The magnetic fields, activity and dynamos of young solar-type stars can be empirically studied using time-series of spectropolarimetric observations and tomographic imaging techniques such as Doppler imaging and Zeeman Doppler imaging. In this paper
Externí odkaz:
http://arxiv.org/abs/1611.07751
Autor:
Mengel, M. W., Marsden, S. C., Carter, B. D., Horner, J., King, R., Fares, R., Jeffers, S. V., Petit, P., Vidotto, A. A., Morin, J., Collaboration, the BCool
We present a spectropolarimetric snapshot survey of solar-type planet hosting stars. In addition to 14 planet-hosting stars observed as part of the BCool magnetic snapshot survey, we obtained magnetic observations of a further 19 planet-hosting solar
Externí odkaz:
http://arxiv.org/abs/1611.07604
Autor:
Mengel, M. W., Fares, R., Marsden, S. C., Carter, B. D., Jeffers, S. V., Petit, P., Donati, J. -F., Folsom, C. P., Collaboration, the BCool
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 fi
Externí odkaz:
http://arxiv.org/abs/1604.02501
Autor:
Nicholson, B. A., Vidotto, A. A., Mengel, M., Brookshaw, L., Carter, B., Petit, P., Marsden, S. C., Jeffers, S. V., Fares, R., Collaboration, the BCool
We present new wind models for {\tau} Bo\"otis ({\tau} Boo), a hot-Jupiter-host-star whose observable magnetic cycles makes it a uniquely useful target for our goal of monitoring the temporal variability of stellar winds and their exoplanetary impact
Externí odkaz:
http://arxiv.org/abs/1603.09242