Results 141 to 150 of about 527,839 (302)
Interaction between the IGM and a dwarf galaxy [PDF]
arXiv, 2014 Dwarf Galaxies are the most common objects in the Universe and are believed to contain large amounts of dark matter. There are mainly three morphologic types of dwarf galaxies: dwarf ellipticals, dwarf spheroidals and dwarf irregulars. Dwarf irregular galaxies are particularly interesting in dwarf galaxy evolution, since dwarf spheroidal predecessors ...
arxiv
Satellite Dwarf Galaxies in a Hierarchical Universe: The Prevalence of Dwarf-Dwarf Major Mergers [PDF]
, 2014 Mergers are a common phenomenon in hierarchical structure formation, especially for massive galaxies and clusters, but their importance for dwarf galaxies in the Local Group remains poorly understood. We investigate the frequency of major mergers between dwarf galaxies in the Local Group using the ELVIS suite of cosmological zoom-in dissipationless ...
arxiv +1 more source
3D Printing of Liquid Crystal Polymers for Space Applications
Advanced Materials Technologies, Volume 10, Issue 4, February 19, 2025.Three‐dimensional printed thermotropic liquid crystal polymers (LCP) exhibiting high tensile strength and stiffness, are found to withstand thermal cycling, atomic oxygen, UV, and electron irradiation. Notably, 1 MeV‐electron irradiation induces green coloration from annealable color centers, without significantly compromising mechanical performance ...
Caroline Houriet +12 more
wiley +1 more source
The Disruption of the Sagittarius Dwarf Galaxy [PDF]
The Astrophysical Journal, 1995 Numerical simulations of dwarf spheroidal galaxies undergoing several close encounters with the Milky Way are described. By comparing our models to observed properties of the recently discovered dwarf galaxy in Sagittarius (Sgr), we discuss implications of our results for the formation and evolution of the Milky Way system.
Lars Hernquist +2 more
openaire +3 more sources
, 2019 In this work we use structural properties of Milky Way's outer halo ($R_G > 25\,\mathrm{kpc}$) satellites (dwarf spheroidal galaxies, ultra-faint dwarf galaxies and globular clusters) derived from deep, wide-field and homogeneous data, to present ...
Carballo-Bello, Julio A. +8 more
core +1 more source
Recent Developments in Degenerate Higher Order Scalar Tensor Theories
Annalen der Physik, Volume 537, Issue 2, February 2025.Degenerate Higher Order Scalar Tensor theories are reviewed, together with their applications in cosmology and astrophysics. These theories have been applied to build models of the early universe, in the description of the late‐time cosmic acceleration, as well as in astrophysics, including black hole physics. They have the potential to provide answers
Andrei Lazanu
wiley +1 more source
Dwarf Galaxies: Important Clues to Galaxy Formation [PDF]
, 2003 10 pages, 4 figures, Invited talk in "Galaxy Evolution III: From Simple Approaches to Self-Consistent Models" (Kiel, Germany, July 16-20, 2002) eds. G.
openaire +4 more sources
Dwarf Galaxies with Radio-excess Active Galactic Nuclei in the Very Large Array Sky Survey
The Astrophysical JournalWe present a systematic search for radio active galactic nuclei (AGNs) in dwarf galaxies using recent observations taken by the Very Large Array Sky Survey (VLASS).
John-Michael Eberhard +4 more
doaj +1 more source
The Outer Edges of Dwarf Irregular Galaxies: Stars and Gas
, 2002 We have in recent years come to view dwarf galaxy evolution in the broader context of the cosmic evolution of large-scale structure. Dwarf galaxies, as the putative building blocks of hierarchical galaxy formation, and also as the most numerous galaxies ...
Hodge, P. W., Hunter, D. A., Oey, M. S.
core +1 more source
JWST Imaging of the Closest Globular Clusters—V. The White Dwarfs Cooling Sequence of M4
Astronomische Nachrichten, Volume 346, Issue 2, February 2025.ABSTRACT We combine infrared (IR) observations collected by the James Webb Space Telescope with optical deep images by the Hubble Space Telescope taken ~20 years earlier to compute proper‐motion membership for the globular cluster (GC) M4 (NGC 6121) along its entire white dwarf (WD) cooling sequence (CS).
Luigi R. Bedin +11 more
wiley +1 more source