Results 101 to 110 of about 26,787 (255)

Topographic Drag at the Core‐Mantle Interface

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract The length of day variations with periods from five to one hundred years are mainly due to core‐mantle interactions. Assuming a differential velocity between the core and the mantle, we investigate the pressure coupling on a core‐mantle boundary (CMB) interface with topography. Including rotation, buoyancy, and magnetic effects in local models
R. Monville, D. Cébron, D. Jault
wiley   +1 more source

Study of ambient environment around Asymptotic Giant Branch Carbon Star: IRAS 01142+6306

open access: yesBibechana, 2018
We studied dust environment such as flux, temperature, mass and inclination angle of the cavity structure around the C-rich Asymptotic giant branch star in 60 μm and 100 μm wavelengths band using Infrared Astronomical Survey. We observed the data of AGB
L Khanal, D R Upadhyay, A K Jha, B Aryal
doaj   +3 more sources

An Interview With Peter Rousseeuw

open access: yesInternational Statistical Review, Volume 93, Issue 1, Page 1-17, April 2025.
Summary Peter J. Rousseeuw is a statistician known mainly for his work on robust statistics and cluster analysis. Among his creations are least trimmed squares regression, the minimum covariance determinant estimator, the partitioning around medoids clustering method and the silhouettes graphical display.
Mia Hubert
wiley   +1 more source

Measuring Star Formation Histories from Asymptotic Giant Branch Stars. I. A Demonstration in M31

open access: yesThe Astrophysical Journal
We demonstrate how near-infrared (NIR) imaging of resolved luminous asymptotic giant branch (AGB) stars can be used to measure well-constrained star formation histories (SFHs) across cosmic time.
Abigail J. Lee   +4 more
doaj   +1 more source

Obscured Asymptotic Giant Branch stars in the Magellanic Clouds [PDF]

open access: yesSymposium - International Astronomical Union, 1999
We report on some recent advances in the study and understanding of heavily obscured AGB stars in the Magellanic Clouds.
openaire   +4 more sources

Dissipative Particle Dynamics Modeling in Polymer Science and Engineering

open access: yesWIREs Computational Molecular Science, Volume 15, Issue 2, March/April 2025.
Unveiling the dynamics of polymers: A mesoscale simulation of polymer chains (left) modeled through dissipative particle dynamics (DPD) with a detailed magnified view (right) illustrating the interactions and forces driving their hierarchical behavior. ABSTRACT Polymeric materials are intricate systems with unique properties across different length and
Sousa Javan Nikkhah, Matthias Vandichel
wiley   +1 more source

White dwarf planets

open access: yesEPJ Web of Conferences, 2013
The recognition that planets may survive the late stages of stellar evolution, and the prospects for finding them around White Dwarfs, are growing. We discuss two aspects governing planetary survival through stellar evolution to the White Dwarf stage ...
Bonsor Amy   +4 more
doaj   +1 more source

MULTIPLE SPIRAL BRANCHES ON LATE ASYMPTOTIC GIANT BRANCH STARS

open access: yesThe Astrophysical Journal, 2012
We present one-dimensional hydrodynamical models that suggest a new mechanism for generating spiral structures around evolved stars. In these models, the pulsation of the star initiates the mass outflow and generates shock waves from a static atmosphere.
Qian Wang, Lee Anne Willson
openaire   +1 more source

On the Origin of Morphological Structures of Planetary Nebulae

open access: yesGalaxies, 2018
We suggest that most of the mass in planetary nebulae (PNe) resides in the equatorial region and the spherical envelope and the optically bright lobes of PNe are in fact low-density cavities cleared out by fast outflows and photoionized by UV photons ...
Sun Kwok
doaj   +1 more source

Study of Neutron Capture Nucleosynthesis Based on Post–Asymptotic Giant Branch Stars

open access: yesThe Astrophysical Journal
The intermediate neutron-capture process ( i -process) may occur during proton ingestion events, with post–asymptotic giant branch (AGB) stars considered among its potential astrophysical sites.
Miao Tian   +6 more
doaj   +1 more source

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