Results 41 to 50 of about 35,527 (304)
Migration of gap-opening planets in 3D stellar-irradiated accretion disks [PDF]
Astronomy & Astrophysics, 2020 Context. The origin of giant planets at moderate separations ≃1–10 au is still not fully understood because numerical studies of Type II migration in protoplanetary disks often predict a decay of the semi-major axis that is too fast. According to recent 2D simulations, inward migration of a gap-opening planet can be slowed down or even reversed if the ...
O. Chrenko, D. Nesvorný
openaire +2 more sources
LAMOST Reveals Long-lived Protoplanetary Disks
The Astronomical JournalWhile both observations and theories demonstrate that protoplanetary disks are not expected to live much longer than ∼10 Myr, several examples of prolonged disks have been observed in the past.
Xiao-Long Wang +4 more
doaj +1 more source
Transitional disks and their origins: an infrared spectroscopic survey of Orion A
, 2013 Transitional disks are protoplanetary disks around young stars, with inner holes or gaps which are surrounded by optically thick outer, and often inner, disks.
Arnold, Laura +12 more
core +1 more source
Stellar wind accretion and accretion disk formation: Applications to neutron star high-mass X-ray binaries [PDF]
Publications of the Astronomical Society of Japan, 2019 Abstract Recent X-ray observations have revealed the complexity and diversity of high-mass X-ray binaries (HMXBs). This diversity challenges a classical understanding of the accretion process on to the compact objects. In this study, we reinforce the conventional concept of the nature of wind-fed accretion on to a neutron star ...
Karino, Shigeyuki +2 more
openaire +2 more sources
Advanced Engineering Materials, EarlyView.The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal +2 more
wiley +1 more source
Secret of Longevity: Protoplanetary Disks as a Source of Gas in Debris Disks
The Astrophysical JournalWhile protoplanetary disks (PPDs) are generally thought to disperse within several million years, recent observations have revealed gas in their older counterparts, debris disks.
Wataru Ooyama +4 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 As the classic viscous paradigm for protoplanetary disk accretion is challenged by the observational evidence of low turbulence, the alternative scenario of MHD disk winds is being explored as being potentially able to reproduce the same observed ...
Alice Somigliana +7 more
doaj +1 more source
A diversity of progenitors and histories for isolated spiral galaxies [PDF]
, 2012 We analyze a suite of 33 cosmological simulations of the evolution of Milky Way-mass galaxies in low-density environments. Our sample spans a broad range of Hubble types at z=0, from nearly bulgeless disks to bulge-dominated galaxies.
Bournaud, Frederic +4 more
core +3 more sources
Disk-mediated accretion burst in a high-mass young stellar object [PDF]
Nature Physics, 2016 27 pages, 3 figures. Published in Nature Physics, 2016, Vol.
Caratti o Garatti, A +15 more
openaire +5 more sources
Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects
Advanced Engineering Materials, EarlyView.Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini +6 more
wiley +1 more source