Results 51 to 60 of about 1,052,795 (334)
Making Planet Nine: A Scattered Giant in the Outer Solar System [PDF]
, 2016 Correlations in the orbits of several minor planets in the outer solar system suggest the presence of a remote, massive Planet Nine. With at least ten times the mass of the Earth and a perihelion well beyond 100 AU, Planet Nine poses a challenge to planet formation theory.
arxiv +1 more source
Tracing Planets in Circumstellar Discs
EPJ Web of Conferences, 2013 Planets are assumed to form in circumstellar discs around young stellar objects. The additional gravitational potential of a planet perturbs the disc and leads to characteristic structures, i.e. spiral waves and gaps, in the disc density profile.
Uribe Ana L. +3 more
doaj +1 more source
Understanding the origin of white dwarf atmospheric pollution by dynamical simulations based on detected three-planet systems [PDF]
, 2020 Between 25-50 % of white dwarfs (WD) present atmospheric pollution by metals, mainly by rocky material, which has been detected as gas/dust discs, or in the form of photometric transits in some WDs. Planets might be responsible for scattering minor bodies that can reach stargazing orbits, where the tidal forces of the WD can disrupt them and enhance ...
arxiv +1 more source
Star Hoppers: Planet Instability and Capture in Evolving Binary Systems [PDF]
, 2012 Many planets are observed in stellar binary systems, and their frequency may be comparable to that of planetary systems around single stars. Binary stellar evolution in such systems influences the dynamical evolution of the resident planets. Here we study the evolution of a single planet orbiting one star in an evolving binary system.
arxiv +1 more source
Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems [PDF]
Astrophys.J.693:1084-1099,2009, 2008 We present the latest velocities for 10 multi-planet systems, including a re-analysis of archival Keck and Lick data, resulting in improved velocities that supersede our previously published measurements. We derive updated orbital fits for ten Lick and Keck systems, including two systems (HD 11964, HD 183263) for which we provide confirmation of second
arxiv +1 more source
Possible role of human ribonuclease dicer in the regulation of R loops
FEBS Open Bio, EarlyView.R loops play an important role in regulating key cellular processes such as replication, transcription, centromere stabilization, or control of telomere length. However, the unscheduled accumulation of R loops can cause many diseases, including cancer, and neurodegenerative or inflammatory disorders. Interestingly, accumulating data indicate a possible
Klaudia Wojcik +2 more
wiley +1 more source
Influence of reference states on Jupiter’s dynamo simulations
Earth and Planetary Physics, 2021 Jupiter’s magnetic field is thought to be generated in its deep metallic hydrogen region through dynamo action, yet the detailed dynamic process remains poorly understood.
LongHui Yuan, YuFeng Lin, Chris A. Jones
doaj +1 more source
Advanced Engineering Materials, EarlyView.This manuscript presents advances in digital transformation within materials science and engineering, emphasizing the role of the MaterialDigital Initiative. By testing and applying concepts such as ontologies, knowledge graphs, and integrated workflows, it promotes semantic interoperability and data‐driven innovation. The article reviews collaborative
Bernd Bayerlein +44 more
wiley +1 more source
A case study of environmental considerations and opportunities in cyber physical systems
IET Software, 2023 Cyber Physical Systems (CPS) are becoming more ubiquitous, complex and powerful as well as more and more present in our daily life. The inherent benefit and comfort come with an environmental impact at every step of their life‐cycle.
Mario Cortes‐Cornax +2 more
doaj +1 more source