13 papers · 1 filter
Star-Planet Interactions
Evgenya Shkolnik, Suzanne Aigrain, Steven Cranmer +6
Much effort has been invested in recent years, both observationally and theoretically, to understand the interacting processes taking place in planetary systems consisting of a hot…
BD-22 5866: A Low-mass Quadruple-lined Spectroscopic AND Eclipsing Binary
Evgenya Shkolnik, Michael C. Liu, I. Neill Reid +4
We report our discovery of an extremely rare, low mass, quadruple-lined spectroscopic binary BD-22 5866 (=NLTT 53279, integrated spectral type = M0 V), found during an ongoing sear…
MOST detects variability on tau Bootis possibly induced by its planetary companion
Gordon A. H. Walker, Bryce Croll, Jaymie M. Matthews +8
(abridged) There is considerable interest in the possible interaction between parent stars and giant planetary companions in 51 Peg-type systems. We demonstrate from MOST satellite…
Magnetic cycles of the planet-hosting star tauBootis
J. F. Donati, C. Moutou, R. Fares +7
We have obtained new spectropolarimetric observations of the planet-hosting star tauBootis, using the ESPaDOnS and NARVAL spectropolarimeters at the Canada-France-Hawaii Telescope…
The On/Off Nature of Star-Planet Interactions
Evgenya Shkolnik, David A. Bohlender, Gordon A. H. Walker +1
Evidence suggesting an observable magnetic interaction between a star and its hot Jupiter appears as a cyclic variation of stellar activity synchronized to the planet's orbit. In t…
The magnetic field of the planet-hosting star Bootis
C. Catala, J. -F. Donati, E. Shkolnik +2
We have obtained high resolution spectropolarimetric data for the planet-hosting star Bootis, using the ESPaDOnS spectropolarimeter at CFHT. A weak but clear Stokes signatu…