Results 61 to 70 of about 531,438 (331)
, 2007 We discuss structural and kinematical properties of the stellar halo and the old globular cluster system (GCS) in the Large Magellanic Cloud (LMC) based on numerical simulations of the LMC formation.
Alves +58 more
core +1 more source
Stellar kinematics using a third integral of motion: method and application on the Andromeda galaxy [PDF]
, 2016 We probe the feasibility of describing the structure of a multicomponent axisymmetric galaxy with a dynamical model based on the Jeans equations while taking into account a third integral of motion.
R. Kipper +4 more
semanticscholar +1 more source
Impulsive Mixing of Stellar Populations in Dwarf Spheroidal Galaxies
The Astrophysical JournalWe study the response of mono-energetic stellar populations with initially isotropic kinematics to impulsive and adiabatic changes to an underlying dark matter potential.
Raphaël Errani +4 more
doaj +1 more source
Nonextensive Behavior of Stellar Rotation in the Galactic Disk Components
The Astrophysical Journal, 2023 The solar neighborhood is a unique stellar astrophysical laboratory formed by a variety of stars from different origins. In particular, two of the most notable populations known are the thick and thin disk stars, each characterized by distinct chemical ...
M. P. da Silva +3 more
doaj +1 more source
Maximum likelihood estimation of local stellar kinematics [PDF]
, 2012 Context. Kinematical data such as the mean velocities and velocity dispersions of stellar samples are useful tools to study galactic structure and evolution.
Aghajani, Toktam, Lindegren, Lennart
core +1 more source
THE STELLAR KINEMATICS IN THE SOLAR NEIGHBORHOOD FROM LAMOST DATA [PDF]
, 2015 We use about 200,000 FGK-type main-sequence stars from the LAMOST DR1 data to map the local stellar kinematics. With the velocity deprojection technique, we are able to derive the averaged three-dimensional velocity and velocity ellipsoids using only the
H. Tian +8 more
semanticscholar +1 more source
Experimental Analysis and Physics‐Based Analytical Model on Twisted and Coiled Artificial Muscles
Advanced Engineering Materials, EarlyView.Twisted and coiled artificial muscles made from silver‐coated nylon fibers are investigated through experiments and analytical modeling. The actuators achieve contractions up to 19.3% and specific work of 8 kJ kg−1, though efficiency remains limited (≈0.15%) by thermal losses.
Salvatore Garofalo +3 more
wiley +1 more source
Kinematics of Young Stellar Objects under Various Stellar Feedback
The Astrophysical Journal Supplement SeriesBased on the Gaia Data Release 3 and APOGEE data sets, we investigate the kinematic differences between young stellar objects (YSOs) and their parent clouds in five nearby star-forming regions.
Longhui Yang +8 more
doaj +1 more source
Robot‐Assisted Automated Serial‐Sectioning and Imaging for 3D Microstructural Investigations
Advanced Engineering Materials, EarlyView.A fully automated 3D microstructure characterization platform provides new insights into materials. This robot‐assisted system performs serial‐sectioning, etching, and optical imaging to generate large‐volume 3D reconstructions with submicron resolution.
Michael Moschetti +7 more
wiley +1 more source
Jormungandr: A Large Substructure Circling the Milky Way Identified from Gaia DR3 Data
The Astrophysical JournalWe report the discovery of a large substructure in the Milky Way passing through the solar neighborhood, detected in actions $\left({J}_{\phi },{J}_{{\rm{R}}}\right)$ calculated from Gaia DR3 data.
Xianhao Ye +5 more
doaj +1 more source