Results 21 to 30 of about 3,544,854 (221)

Planet formation and disc dynamics in stellar clusters and misaligned binary systems [PDF]

open access: yes, 2009
PhDIn this thesis I investigate the formation and dynamics of planets and protoplanetary discs, subject to external gravitational perturbations.
Fragner, Moritz Matthias
core   +4 more sources

The On/Off Nature of Star‐Planet Interactions [PDF]

open access: yesThe Astrophysical Journal, 2008
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 this study, we monitored the chromospheric activity of 7 stars with hot Jupiters using new high-resolution echelle spectra collected with ESPaDOnS over a few nights in 2005 ...
Shkolnik, Evgenya   +3 more
openaire   +3 more sources

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

open access: yes, 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.   +38 more
core   +1 more source

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

open access: yesThe Astrophysical Journal, 2015
16 pages, 2 tables, 10 figures, accepted to ...
Miller, Brendan P.   +3 more
openaire   +2 more sources

Observed effects of star-planet interaction [PDF]

open access: yesProceedings of the International Astronomical Union, 2015
AbstractSince soon after the discovery of hot Jupiters, it had been suspected that interaction of these massive bodies with their host stars could give rise to observable signals. We discuss the observational evidence for star-planet interactions (SPI) of tidal and magnetic origin observed in X-rays and FUV.
Wolk, Scott J.   +2 more
openaire   +1 more source

Star-planet interactions and selection effects from planet detection methods

open access: yes, 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

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

open access: yesThe 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   +4 more
doaj   +1 more source

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

open access: yesFEBS 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

Magnetic Effect on the Evolution of an Eccentric and Inclined Orbit

open access: yesThe 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

Cumulative Social Disadvantage and Disease Activity in Juvenile Idiopathic Arthritis: A Childhood Arthritis and Rheumatology Research Alliance Registry Study

open access: yesArthritis Care &Research, EarlyView.
Objective Social determinants of health (SDOH) contribute to juvenile idiopathic arthritis (JIA) disparities, but most studies have assessed SDOH independently rather than cumulatively across individual, family, and neighborhood levels. Using a socioecological framework, we investigated the relationship among cumulative social disadvantage ...
William Daniel Soulsby   +448 more
wiley   +1 more source

Home - About - Disclaimer - Privacy