Results 81 to 90 of about 53,348 (269)
Radial Kinematics of Isolated Elliptical Galaxies [PDF]
, 2006 Ellipticals in very low density environments are extremely rare but hold important clues about galaxy formation and evolution. In this paper we continue our study of isolated elliptical galaxies, presenting results on the radial stellar kinematics for 13
Forbes, Duncan, Hau, George
core +3 more sources
The Stellar Kinematics of Elliptical Galaxies [PDF]
Symposium - International Astronomical Union, 1987 The kinematic properties of elliptical galaxies are summarized. New developments are discussed in four areas: (i) the Faber-Jackson relation and the role of second parameters (ii) the luminosity-rotation relation (iii) the figures of elliptical galaxies and (iv) the mass-to-light ratio as a function of radius.
openaire +2 more sources
Principal Component Analysis of Molecular Dynamic Trajectories: Concepts, Tools, and Applications
WIREs Computational Molecular Science, Volume 15, Issue 6, November/December 2025.Principal component analysis (PCA) applied to dynamical systems. Top‐left: PCA of the tip motion of a mechanical spring. Top‐right: dihedral PCA of the trialanine peptide. Bottom‐left: three‐dimensional mapping of the end‐to‐end distance in the space of the first two eigenvectors of a β‐hairpin peptide.
Danilo Roccatano
wiley +1 more source
Galaxy Formation from the Primordial Black Holes
EPJ Web of Conferences, 2017 Supermassive black hole (SMBH) of size MBH = 106-10M⊙ is common in the Universe and it defines the center of the galaxy. A galaxy and the SMBH are generally thought to have co-evolved.
Morikawa Masahiro
doaj +1 more source
Tools for Learning—Promoting Reflection for Student Teachers' Development of PCK
Journal of Research in Science Teaching, Volume 62, Issue 8, Page 1902-1922, October 2025.ABSTRACT This paper investigates how the coherent integration of three different tools for reflection during a science methods course can contribute to student teachers' planning and enactment of science teaching, that is, their development of pedagogical content knowledge (PCK).
Pernilla Nilsson +1 more
wiley +1 more source
Advanced Science, Volume 12, Issue 34, September 11, 2025.This review spotlights key advances in chiral halide perovskite materials and devices, covering device architectures, fabrication methods, and emerging applications like circularly polarized light functions, neuromorphic computing, and spintronics. It explores structure‐property relationships and chirality transfer mechanisms, discusses challenges in ...
Qi Liu, Hui Ren, Qi Wei, Mingjie Li
wiley +1 more source
Can We Discover Physical Models Using Machine Learning? A Case Study of Galaxy Sizes
The Astrophysical JournalWe explore the ability of machine learning methods to discover underlying equations of physics by searching for the equations governing galaxy size in a semianalytic model. This case study allows us to evaluate the process as we know the ground truth. We
Festa Buçinca-Çupallari +4 more
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Surface Photometry of Spiral Galaxy NGC 5005 and Elliptical Galaxy NGC 4278
مجلة بغداد للعلوم, 2018 Two galaxies have been chosen, spiral galaxy NGC 5005 and elliptical galaxy NGC 4278 to study their photometric properties by using surface photometric techniques with griz-Filters. Observations are obtained from the Sloan Digital Sky Survey (SDSS).
Baghdad Science Journal
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A review of multiscale numerical modeling of rock mechanics and rock engineering
Deep Underground Science and Engineering, Volume 4, Issue 3, Page 382-405, September 2025.Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley +1 more source
Galactic Structures from Gravitational Radii
Galaxies, 2018 We demonstrate that the existence of a Noether symmetry in f ( R ) theories of gravity gives rise to an additional gravitational radius, besides the standard Schwarzschild one, determining the dynamics at galactic scales.
Salvatore Capozziello +3 more
doaj +1 more source