Results 31 to 40 of about 79,410 (285)

On the chromospheric activity of stars with planets [PDF]

, 2011
Context. Signatures of chromospheric activity enhancement have been found for a dozen stars, pointing to a possible star-planet interaction. Nevertheless in the coronal activity regime, there is no conclusive observational evidence for such an ...
Alves, B. L. Canto Martins, Butler, de Medeiros, Fares, Flower, I. C. Leão, J. R. de Medeiros, Jetsu, Kashyap, Konacki, Konacki, L. P. de Souza Neto, M. L. das Chagas, Marcy, Mayor, Noyes, Poppenhaeger, S. Alves, Schmitt, Shkolnik, Shkolnik, Wright   +22 more
core   +2 more sources

A COMPREHENSIVE STATISTICAL ASSESSMENT OF STAR-PLANET INTERACTION [PDF]

The Astrophysical Journal, 2015
16 pages, 2 tables, 10 figures, accepted to ...
Miller, Brendan P., Gallo, Elena, Wright, Jason T., Pearson, Elliott G.   +3 more
openaire   +2 more sources

A coordinated optical and X-ray spectroscopic campaign on HD179949: searching for planet-induced chromospheric and coronal activity [PDF]

, 2013
HD179949 is an F8V star, orbited by a close-in giant planet with a period of ~3 days. Previous studies suggested that the planet enhances the magnetic activity of the parent star, producing a chromospheric hot spot which rotates in phase with the planet ...
Bohlender, D., Cameron, A. C., Dieters, S., Donati, J. -F., Fares, R., Fiorenzano, A. F. Martìnez, Jardine, M., Lanza, A. F., Maggio, A., Moutou, C., Pagano, I., Scandariato, G., Shkolnik, E. L.   +12 more
core   +4 more sources

Classification of magnetized star--planet interactions: bow shocks, tails, and inspiraling flows

, 2015
Close-in exoplanets interact with their host stars gravitationally as well as via their magnetized plasma outflows. The rich dynamics that arises may result in distinct observable features.
Königl, Arieh, Matsakos, Titos, Uribe, Ana   +2 more
core   +3 more sources

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

Overview of molecular signatures of senescence and associated resources: pros and cons

FEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas, Sylvia Vagena, Pavlos Pantelis, Giorgos Theocharous, Russel Petty, Konstantinos Evangelou, Vassilis G. Gorgoulis   +6 more
wiley   +1 more source

Tidal evolution of close-in giant planets : Evidence of Type II migration?

, 2012
It is well accepted that 'hot Jupiters' did not form in situ, as the temperature in the protoplanetary disc at the radius at which they now orbit would have been too high for planet formation to have occurred. These planets, instead, form at larger radii
A. Collier Cameron, Alibert, Armitage, Armitage, Barnes, Bell, Benítez-LLamby, Bouvier, Brown, Chabrier, Collier Cameron, Collier Cameron, D'Angelo, Davis, Dobbs-Dixon, Eggleton, Faber, Fabrycky, Ford, Ford, Goldreich, Hansen, Herbst, Ida, J. Veljanoski, Jackson, Kozai, Kuchner, Königl, Lin, Lin, Marcy, Mardling, Marzari, Matsumura, Mayor, Mestel, Morton, Nagasawa, Pont, Queloz, Rasio, Rice, Triaud, Trilling, Udry, W. K. M. Rice, Ward, Winn, Winn, Wright, Wu   +51 more
core   +2 more sources

Magnetic Effect on the Evolution of an Eccentric and Inclined Orbit

The Astrophysical Journal
We provide a method to calculate the evolution of an eccentric and inclined orbit under the magnetic effect. Taking the unipolar interaction as an example, we study both coplanar and inclined orbits. We calculate the Lorentz force and then the changes in
Xing Wei
doaj   +1 more source

Addressing Economic Insecurities Can Improve Patient‐Reported Outcomes in Lupus

Arthritis Care &Research, EarlyView.
Objective Economic insecurities, such as food, housing, transportation, and financial challenges, are modifiable risk factors and influence patient‐reported outcomes (PROs) in systemic lupus erythematosus (SLE). We examined the following: (1) associations between economic insecurities and PROs, and (2) the impact of screening and addressing economic ...
Jay Patel, Tripti Singh, Meredith Ingersoll, Shelby Gomez, Amanda Weber, Sarah E. Panzer, Sancia Ferguson, Christie M. Bartels, Shivani Garg   +8 more
wiley   +1 more source

Stability of Multiplanetary Systems in Star Clusters

, 2017
Most stars form in star clusters and stellar associated. To understand the roles of star cluster environments in shaping the dynamical evolution of planetary systems, we carry out direct $N$-body simulations of four planetary systems models in three ...
Cai, Maxwell Xu, Kouwenhoven, M. B. N., Spurzem, Rainer, Zwart, Simon F. Portegies   +3 more
core   +1 more source