Results 61 to 70 of about 80,653 (165)

Three Types of Galaxy Disks

, 2007
We present our new scheme for the classification of radial stellar surface brightness profiles for disk galaxies. We summarize the current theoretical attempts to understand their origin and give an example of an application by comparing local galaxies with their counterparts at high redshift (z~1).
Pohlen, M., Erwin, P., Trujillo, I., Beckman, J.   +3 more
openaire   +4 more sources

Dynamics of the disks of nearby galaxies [PDF]

Astronomische Nachrichten, 2008
AbstractI describe how the dynamics of galactic disks can be inferred by imaging and spectroscopy. Next I demonstrate that the decomposition of the rotation curves of spiral galaxies into the contributions by the various components of the galaxies is highly degenerate.
openaire   +2 more sources

The Milky Way as a High Redshift Galaxy: The Importance of Thick Disk Formation in Galaxies

, 2014
We compare the star-formation history and dynamics of the Milky Way (MW) with the properties of distant disk galaxies. During the first ~4 Gyr of its evolution, the MW formed stars with a high star-formation intensity (SFI), Sigma_SFR~0.6 Msun/yr/kpc2 ...
Di Matteo, Paola, Haywood, Misha, Lehnert, Matthew D., Snaith, Owain N.   +3 more
core   +3 more sources

Solar Energetic Particle Prediction in the Inner Heliosphere Using Deep Learning and PSP/IS⊙IS Data

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Solar events, such as coronal mass ejections and solar flares, accelerate large numbers of energetic charged particles, producing solar energetic particle (SEP) events that can harm astronauts, damage satellites, and potentially damage infrastructure on Earth.
Tate Hutchins, Spiridon Kasapis, Hameedullah Farooki, Manuel E. Cuesta, Lengying Khoo, Sungmin Pak, Robert Czarnota, Jamie Rankin, Jamey Szalay, Zigong Xu, Georgios Livadiotis, Nikolaos Sarlis, David McComas   +12 more
wiley   +1 more source

PES‐trotter: A Cross‐Platform Open‐Source Application for the Analysis of Molecular Processes on 3D Potential‐Energy Landscapes

Journal of Computational Chemistry, Volume 47, Issue 14, 30 May 2026.
PES‐trotter is a cross‐platform open‐source application for the exploration and analysis of 3D potential‐energy landscapes associated to molecular systems. Along with video‐game‐like exploration, it allows plotting energy profiles from custom paths, computing critical points and minimum‐energy paths, and playing back dynamical trajectories. PES‐trotter
Erwan Privat, Ajay Mohan Singh Rawat, Bernardo Ballotta, Antonino Polimeno, Sergio Rampino   +4 more
wiley   +1 more source

An autonomous and economical benthic incubation chamber for measuring dissolved oxygen fluxes in shallow, low‐flow environments

Limnology and Oceanography: Methods, Volume 24, Issue 5, May 2026.
Abstract Benthic incubation chambers enclose a known volume of water overlying a known area to measure water chemistry changes and are typically used to quantify the metabolic activity of benthic organisms or communities. Here we present an economical benthic incubation chamber for shallow, low‐flow environments, built using off‐the‐shelf components ...
Luke D. Groff, Peter Berg, Karen J. McGlathery   +2 more
wiley   +1 more source

Truncation of stellar disks in galaxies at z~1

, 2004
We report here the first evidence for stellar disk truncation at high redshift, based on surface photometry of a sample of 16 high redshift (0.6 < z < 1.0) disk galaxies from the GOODS HST/ACS data.
Beckman, de Grijs, de Grijs, de Jong, Freeman, Fukugita, Giavalisco, I. Pérez, Kennicutt, Kregel, Mao, Pohlen, van den Bosch, van der Kruit, van der Kruit, Wozniak, Zhang   +16 more
core   +1 more source

Autoparallels and the Inverse Problem of the Calculus of Variations

Fortschritte der Physik, Volume 74, Issue 5, May 2026.
ABSTRACT We prove that autoparallel curves associated with a torsion‐free but not necessarily metric‐compatible affine connection can be derived from an action principle. We explicitly construct the action functional and show by standard variational techniques that it produces the desired equations.
Lavinia Heisenberg
wiley   +1 more source

Bars in Disk-Dominated and Bulge-Dominated Galaxies at z~0: New Insights from ~3600 SDSS Galaxies

, 2007
We present a study of large-scale bars in the local Universe, based on a large sample of ~3692 galaxies, with -18.5
Barazza, Fabio D., Jogee, Shardha, Marinova, Irina   +2 more
core   +1 more source

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, Volume 43, Issue 3, Page 1212-1228, May/June 2026.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source