[PDF] Top 20 Stellar magnetic activity – Star-Planet Interactions

... ionized stellar wind, which couples to the stellar magnetic field on its journey away from the star and thus carries away angular ...The star therefore spins down over ...how ... See full document

... observable magnetic cycles makes it a uniquely useful target for our goal of monitoring the temporal vari- ability of stellar winds and their exoplanetary ...the stellar magnetic field, we ... See full document

... its Star (MOVES) program, we present a 2-year monitoring of the large-scale magnetic field of ...The magnetic maps are reconstructed for five epochs of observations, namely June-July 2013, August ... See full document

... the planet engulfment confirms what was suggested by many au- thors in the past (see ...the planet engulfment process can indeed produce lithium-rich red ...of planet engulfment re- mains di ffi cult ... See full document

... lar activity are their relatively large ...of stellar activity and not only due to observational ...in magnetic field intensity and X-ray emis- sion along its cycle (see left-most and bottom ... See full document

... To perform the simulations, we use the Block Adaptive Tree Solar-wind Roe Upwind Scheme (BATS-R-US), a 3D ideal MHD numerical code developed at the Cen- ter for Space Environment Modeling at University of Michigan ... See full document

... a magnetic activity indicator in low- mass stars and can be used to place coarse constraints on a star ’ s age ( West et ...age planet host with similar spectral type, K2-9 ( Montet et ... See full document

... Figure 2. (a) Toroidal energy fraction against Rossby number for the sam- ple of stars used by See et al. (2015) (open square symbols). Stars observed at multiple epochs are joined by solid lines. (b) The ratio of X-ray ... See full document

... Figure 2. (a) Toroidal energy fraction against Rossby number for the sample of stars used by See et al. (2015) (open square symbols). Stars observed at multiple epochs are joined by solid lines. (b) The ratio of X-ray to ... See full document

... each star on stellar parameter space was compared with  that of stellar interior and evolutionary model ...measured stellar parameters and weighted by the observational ... See full document

... the activity cycle signal, we have found a signi fi cant periodicity at ...to activity at moderate latitude on a differentially rotating stellar ...the planet HD 219134 f found by ...to ... See full document

... Sun’s magnetic activity cycle varies primarily on a time scale of approximately 11yrs from min- imum to maximum and back ...internal magnetic field: Frequencies, damping rates, and powers are all ... See full document

... the linear trend, indicating that the companion is at least 4 AU away. More discussion regarding this system will be given in Section 3.2 after considering the AO data. Six systems have nontransiting objects revealed by ... See full document

... the stellar and planetary gravities, the stellar radiation pressure, and the inertial force linked to the non- Galilean stellar reference ...the stellar wind ...the star-Earth line of ... See full document

... in magnetic field topology can explain the reduced mass-loss rates of the more active stars though Vidotto et ...from star to star while the CS model does show some hints of this ...high ... See full document

... well-constrained stellar ages (Veras et ...mutual interactions amongst planets (Veras & G¨ansicke 2015; Veras et ...giant planet free floaters for each Milky Way main-sequence star (Sumi ... See full document

... such planet-hosting Sun-like star (HD 1237), in which we investi- gate the large scale magnetic field and chromospheric ...the stellar magnetic field on the circumstellar environment ... See full document

... the planet-formation process. Tidal interactions cause the evolution of their orbital parameters on secular time-scales and shape their observed ...the star through magnetic ...and ... See full document

... without any particular acceleration mechanism. Of course, v sin i is a lower limit to the true equatorial surface velocity and thus among these stars a few stars can still be much more rapid rota- tors but, without any ... See full document

... the stellar surface. Such effects are e.g. stellar rotation ...the star in a star-planet system), and stellar activity phenomena: spots, plage-area, faculae and ... See full document