Results 11 to 20 of about 3,689,310 (247)

On close-in magnetized star-planet interactions [PDF]

, 2012
We present 2D magnetohydrodynamic simulations performed with the PLUTO code to model magnetized star-planet interactions. We study two simple scenarios of magnetized star-planet interactions: the unipolar and dipolar interactions.
Antoine Strugarek (21258785), Sean P. Matt (21829835), Allan Sacha Brun (21257585)   +2 more
core   +3 more sources

On the diversity of magnetic interactions in close-in star-planet systems [PDF]

, 2014
© 2014. The American Astronomical Society. All rights reserved..Magnetic interactions between close-in planets and their host star can play an important role in the secular orbital evolution of the planets, as well as the rotational evolution of their ...
AS Brun (8621274), A Strugarek (8621277), SP Matt (21850259), V Réville (21850262)   +3 more
core   +4 more sources

Star-planet interactions and selection effects from planet detection methods

, 2011
Planets may have effects on their host stars by tidal or magnetic interaction. Such star-planet interactions are thought to enhance the activity level of the host star.
Schmitt, J. H. M. M., Poppenhaeger, K.
core   +3 more sources

The Pan-Pacific Planet Search. VII. the Most Eccentric Planet Orbiting a Giant Star [PDF]

, 2017
Radial velocity observations from three instruments reveal the presence of a 4 M Jup planet candidate orbiting the K giant HD 76920. HD 76920b has an orbital eccentricity of 0.856 ±0.009, making it the most eccentric planet known to orbit an evolved star.
Kane, Stephen R., R. P. Butler, Clark, Jake,, Villaver, Eva,, Eva Villaver, Horner, Jonathan,, Villaver, Eva, Jinglin Zhao, Wittenmyer, Robert A., Jenkins, J. S., Zhao, Jinglin, Mustill, A. J.,, Clark, Jake, Stephen R. Kane, Jonathan Horner, Mustill, A. J., Robert A. Wittenmyer, Jake Clark, Jenkins, James Stewart, Marshall, J. P.,, Jones, M. I., Marshall, J. P., J. S. Jenkins, Jones, M. I.,, Zhao, Jinlin, Wittenmyer, Robert A.,, Butler, R. P.,, J. P. Marshall, Kane, Stephen R.,, Zhao, Jinglin,, Jenkins, J. S.,, A. J. Mustill, Butler, R. P., Pena Rojas, P. A., M. I. Jones, P. A. Pena Rojas, Rojas, P. A.Pena, Rojas, P. A.Pena,, Horner, Jonathan   +38 more
core   +1 more source

III.9-1 Investigating star-planet interactions with CoRoT [PDF]

, 2016
Some results of the investigations on star-planet interactions based on the exquisite observations performed by the space experiment CoRoT are ...
A. F. Lanza, LANZA, Antonino Francesco, Lanza, A. F.   +2 more
core   +1 more source

Signatures of Star-planet Interactions [PDF]

, 2017
Planets interact with their host stars through gravity, radiation and magnetic fields, and for those giant planets that orbit their stars within ~10 stellar radii (~0.1 AU for a sun-like star), star-planet interactions (SPI) are observable with a wide ...
Shkolnik, Evgenya L., Llama, Joe, Joe Llama, Evgenya L. Shkolnik   +3 more
core   +1 more source

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Wide Binary Orbits Are Preferentially Aligned with the Orbits of Small Planets, but Probably Not Hot Jupiters

The Astronomical Journal
Studying the relative orientations of the orbits of exoplanets and wide-orbiting binary companions (semimajor axis greater than 100 au) can shed light on how planets form and evolve in binary systems. Previous observations by multiple groups discovered a
Sam Christian, Andrew Vanderburg, Juliette Becker, Adam L. Kraus, Logan Pearce, Karen A. Collins, Malena Rice, Eric L. N. Jensen, David Baker, Valerio Bozza, Paul Benni, Allyson Bieryla, Avraham Binnenfeld, Kevin I. Collins, Dennis M. Conti, Ian J. M. Crossfield, Phil Evans, Marshall C. Johnson, Eric Girardin, Joao Gregorio, Pablo Lewin, Tsevi Mazeh, Felipe Murgas, Aviad Panahi, Francisco J. Pozuelos, Don J. Radford, Howard M. Relles, Fabian Rodriguez Frustaglia, Richard P. Schwarz, Gregor Srdoc, Chris Stockdale, Thiam-Guan Tan, William C. Waalkes, Gavin Wang, Justin Wittrock, Shay Zucker   +35 more
doaj   +1 more source

X-Ray Activity Variations and Coronal Abundances of the Star–Planet Interaction Candidate HD 179949

The Astrophysical Journal, 2023
We carry out detailed spectral and timing analyses of the Chandra X-ray data of HD 179949, a prototypical example of a star with a close-in giant planet with possible star–planet interaction (SPI) effects. We find a low coronal abundance A (Fe)/ A H) ≈ 0.
Anshuman Acharya, Vinay L. Kashyap, Steven H. Saar, Kulinder Pal Singh, Manfred Cuntz   +4 more
doaj   +1 more source

Star-planet interactions: I. Stellar rotation and planetary orbits [PDF]

, 2016
Astronomy and Astrophysics 591 (2016): A45 reproduced with permission from Astronomy & AstrophysicsContext. As a star evolves, planet orbits change over time owing to tidal interactions, stellar mass losses, friction and gravitational drag forces, mass ...
Giovanni Privitera, Georges Meynet, Meynet, G., Aline A. Vidotto, Bianda, M., Eva Villaver, Vidotto, A.A., Privitera, G., Eggenberger, P., Patrick Eggenberger, Michele Bianda, Villaver Sobrino, Eva Gloria   +11 more
core   +2 more sources