Results 121 to 130 of about 3,472,840 (257)
Astronomy & AstrophysicsAims. We constrain the dynamical perturbations of the spiral arms in the Milky Way disk, based on the non-axisymmetric streaming motions of RGB stars revealed by APOGEE and Gaia. Methods. We developed a revised steady-state radial-velocity response model
Tang Xi-Can +6 more
doaj +1 more source
Bioimage management and analysis in Galaxy: Tools, workflows, training, and community practices
Journal of Microscopy, EarlyView.ABSTRACT Image analysis in the life sciences is constrained by fragmented software ecosystems, heterogeneous data formats, and limited reproducibility. These barriers hinder the reuse of image analysis methods and the sustainability of tools. In this article, we describe how the Galaxy platform enables FAIR (Findable, Accessible, Interoperable, and ...
Leonid Kostrykin +25 more
wiley +1 more source
A vertically orientated dark matter halo marks a flip of the Galactic disc
Astronomy & AstrophysicsUnveiling the 3D shape of the Milky Way’s dark-matter halo is critical to understanding its formation history. We created an innovative dynamical model that makes minimal assumptions about the internal dynamical structures and accommodates a highly ...
Zhu Ling +7 more
doaj +1 more source
Feedback and Contagion through Distressed Competition
The Journal of Finance, EarlyView.ABSTRACT Firms tend to compete more aggressively when facing financial distress. This intensified competition reduces profit margins, pushing them further into distress and adversely affecting their industry peers. To study such feedback and contagion effects, we incorporate strategic competition in a dynamic model with long‐term defaultable debt ...
HUI CHEN +3 more
wiley +1 more source
EMPRESS. XII. Statistics on the Dynamics and Gas Mass Fraction of Extremely Metal-poor Galaxies
The Astrophysical JournalWe present the demography of the dynamics and gas mass fraction of 33 extremely metal-poor galaxies (EMPGs) with metallicities of 0.015–0.195 Z _⊙ and low stellar masses of 10 ^4 –10 ^8 M _⊙ in the local universe.
Yi Xu +51 more
doaj +1 more source
Distribution and Kinematics of Classical Cepheids in the Galactic Outer Ring
Open Astronomy, 2015 The existence of an outer ring in the Galaxy can explain the kinematics of OB associations in the Perseus and Sagittarius stellar-gas complexes. Moreover, it can also explain the orientation of the Carina arm with respect to the major axis of the bar. We
Mel’nik A. M. +4 more
doaj +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract Regolith samples from the carbonaceous asteroid Bennu were stowed and delivered to Earth in the OSIRIS‐REx spacecraft's Sample Return Capsule (SRC). We applied multiple analytical techniques to study the components of the post‐flight SRC, with a focus on assessing the conditions and any contaminants to which the Bennu samples were exposed ...
Scott A. Sandford +35 more
wiley +1 more source
The GALAH survey: Searching for and characterizing halo substructures with the GALAH DR4 survey
Astronomy & AstrophysicsContext. Recent studies have revealed that the Milky Way’s stellar halo is a composite of stellar populations of different origins, including multiple accretion events.
Kushniruk Iryna +14 more
doaj +1 more source
Dynamical Evolution of Barred Galaxies
Celestial Mechanics and Dynamical Astronomy, 2005 24 pages, 11 figures, invited review, 2004 DDA meeting in Cannes, april 19-23, Celestial Mechanics & Dynamical Astronomy (in press)
openaire +4 more sources
Nature's Complexity Alive: Farewell to Several Unificatory Cosmological Arguments for Monism
Noûs, EarlyView.ABSTRACT Throughout history, numerous thinkers have claimed that monism—in the form of priority monism, existence monism, monotheistic monism, or versions that posit an extra‐cosmic ultimate being—theoretically surpasses pluralism, above all by positing a unified universe.
Lok‐Chi Chan
wiley +1 more source