Zobrazeno 1 - 10
of 281
pro vyhledávání: '"Marsden, S C"'
Discovering exoplanets orbiting young Suns can provide insight into the formation and early evolution of our own solar system, but the extreme magnetic activity of young stars obfuscates exoplanet detection. Here we monitor the long-term magnetic fie
Externí odkaz:
http://arxiv.org/abs/2401.12408
Autor:
Tsvetkova, S., Morin, J., Folsom, C. P., Bouquin, J. -B. Le, Alecian, E., Bellotti, S., Hussain, G., Kochukhov, O., Marsden, S. C., Neiner, C., Petit, P., Wade, G. A., collaboration, the BinaMIcS
This work is part of the BinaMIcS project, the aim of which is to understand the interaction between binarity and magnetism in close binary systems. All the studied spectroscopic binaries targeted by the BinaMIcS project encompass hot massive and int
Externí odkaz:
http://arxiv.org/abs/2312.04247
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:
Jeffers, S. V., Cameron, R. H., Marsden, S. C., Saikia, S. Boro, Folsom, C. P., Jardine, M. M., Morin, J., Petit, P., See, V., Vidotto, A. A., Wolter, U., Mittag, M.
Cool main-sequence stars, such as the Sun, have magnetic fields which are generated by an internal dynamo mechanism. In the Sun, the dynamo mechanism produces a balance between the amounts of magnetic flux generated and lost over the Sun's 11-year ac
Externí odkaz:
http://arxiv.org/abs/2201.07530
Autor:
Willamo, T., Lehtinen, J. J., Hackman, T., Käpylä, M. J., Kochukhov, O., Jeffers, S. V., Korhonen, H., Marsden, S. C.
Publikováno v:
A&A 659, A71 (2022)
The magnetic activity of the Sun changes with the solar cycle. Similar cycles are found in other stars as well, but their details are not known to a similar degree. Characterising stellar magnetic cycles is important for the understanding of the stel
Externí odkaz:
http://arxiv.org/abs/2110.06729
Autor:
Saikia, S. Boro, Lueftinger, T., Folsom, C. P., Antonova, A., Alecian, E., Donati, J. -F., Guedel, M., Hall, J. C., Jeffers, S. V., Kochukhov, O., Marsden, S. C., Metodieva, Y. T., Mittag, M., Morin, J., Perdelwitz, V., Petit, P., Schmid, M., Vidotto, A. A.
A detailed investigation of the magnetic properties of young Sun-like stars can provide valuable information on our Sun's magnetic past and its impact on the early Earth. We determine the properties of the moderately rotating young Sun-like star kapp
Externí odkaz:
http://arxiv.org/abs/2110.06000
Autor:
Heitzmann, A., Marsden, S. C., Petit, P., Mengel, M. W., Wright, D., Clerte, M., Millburn, I., Folsom, C. P., Addison, B. C., Wittenmyer, R. A., Waite, I. A.
Short-orbit gas giant planet formation/evolution mechanisms are still not well understood. One promising pathway to discriminate between mechanisms is to constrain the occurrence rate of these peculiar exoplanets at the earliest stage of the system's
Externí odkaz:
http://arxiv.org/abs/2105.13537
Autor:
Petit, P., Folsom, C. P., Donati, J. -F., Yu, L., Nascimento Jr., J. -D. do, Jeffers, S., Marsden, S. C., Morin, J., Vidotto, A. A.
Publikováno v:
A&A 648, A55 (2021)
We report on observations of the active K2 dwarf $\epsilon$ Eridani based on contemporaneous SPIRou, NARVAL, and TESS data obtained over two months in late 2018, when the activity of the star was reported to be in a non-cyclic phase. We first recover
Externí odkaz:
http://arxiv.org/abs/2101.02643
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:
Cang, T. -Q., Petit, P., Donati, J. -F., Folsom, C. P., Jardine, M., D'Angelo, C. Villarreal, Vidotto, A. A., Marsden, S. C., Gallet, F., Zaire, B.
Publikováno v:
A&A 643, A39 (2020)
We investigate signatures of magnetic fields and activity at the surface and in the prominence system of the ultra-rapid rotator V530 Per, a G-type solar-like member of the young open cluster $\alpha$~Persei. This object has a rotation period shorter
Externí odkaz:
http://arxiv.org/abs/2008.12120