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Imaging the circumstellar environment of the young T Tauri star SU Aurigae
S. V. Jeffers, M. Min, H. Canovas +2
The circumstellar environments of classical T Tauri stars are challenging to directly image because of their high star-to-disk contrast ratio. One method to overcome this is by usi…
Is it possible to detect planets around young active G and K dwarfs?
S. V. Jeffers, J. R. Barnes, H. R. A. Jones +3
Theoretical predictions suggest that the distribution of planets in very young stars could be very different to that typically observed in Gyr old systems that are the current focu…
High-resolution spectropolarimetric of k Cet: A proxy for the young Sun
J. D. do Nascimento, P. Petit, S. Marsden +6
Among the solar proxies studied in the Sun in Time k Cet (HD 20630) stands out as potentially having a mass very close to solar and a young age. On this study, we monitored the mag…
A Bcool spectropolarimetric survey of over 150 solar-type stars
Stephen Marsden, Pascal Petit, Sandra Jeffers +3
As part of the Bcool project, over 150 solar-type stars chosen mainly from planet search databases have been observed between 2006 and 2013 using the NARVAL and ESPaDOnS spectropol…
Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712 I. Spectropolarimetric observations in all four Stokes parameters
N. Rusomarov, O. Kochukhov, N. Piskunov +8
High-resolution spectropolarimetric observations provide simultaneous information about stellar magnetic field topologies and three-dimensional distributions of chemical elements.…
Are there tangled magnetic fields on HgMn stars?
O. Kochukhov, V. Makaganiuk, N. Piskunov +7
Several recent spectrophotometric studies failed to detect significant global magnetic fields in late-B HgMn chemically peculiar stars, but some investigations have suggested the p…