Results 111 to 120 of about 510,650 (316)

Chandra Observation of M84, a Radio Lobe Elliptical Galaxy in the Virgo Cluster [PDF]

open access: yes, 2000
We analyzed a deep Chandra observation of M84, a bright elliptical galaxy in the core of the Virgo Cluster. We find that the spatial distribution of the soft X-ray emission is defined by the radio structure of the galaxy.
A. Finoguenov, C. Jones
semanticscholar   +1 more source

Kinematics of diffuse elliptical galaxies

open access: yesAstrophysics and Space Science, 2003
To be published in "The Evolution of Galaxies. III. From Simple Approaches to Self-Consistent Models", G.
Francois Simien, Philippe Prugniel
openaire   +3 more sources

The Effect of Superpositions on the Planetary Nebula Luminosity Function

open access: yesThe Astrophysical Journal, 2023
Planetary nebula (PN) surveys in systems beyond ∼10 Mpc often find high-excitation, point-like sources with [O iii ] λ 5007 fluxes greater than the apparent bright-end cutoff of the planetary nebula luminosity function (PNLF).
Owen Chase   +3 more
doaj   +1 more source

The Planetary Nebula System and Dynamics in the Outer Halo of NGC 5128

open access: yes, 2003
The halos of elliptical galaxies are faint and difficult to explore, but they contain vital clues to both structure and formation. We present the results of an imaging and spectroscopic survey for planetary nebulae (PNe) in the nearby elliptical NGC 5128.
Bender R.   +8 more
core   +1 more source

Unveiling the Evolutionary Lineages and Habitat Dynamics of the Monotypic Crowned River Turtle Hardella thurjii (Gray, 1831) (Testudines: Geoemydidae): Strategic Conservation Insights for an Endangered Freshwater Turtle From Southern Asia

open access: yesEcology and Evolution, Volume 15, Issue 6, June 2025.
This study provides the first complete mitochondrial genome of the monotypic H. thurjii , sequenced using next‐generation technologies. Additionally, it employs ensemble species distribution modeling to evaluate habitat suitability and shape geometry under both current and projected climatic scenarios.
Imon Abedin   +7 more
wiley   +1 more source

UV Visibility of Moderate-Redshift Giant Elliptical Galaxies [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
We show quantitatively whether giant elliptical galaxies would be visible at far UV wavelengths if they were placed at moderate redshift of 0.4-0.5. On the basis of simple cosmological tests, we conclude that giant elliptical galaxies can be detectable ...
Myung-Hyun Rhee   +3 more
doaj  

Minor Merger Growth in Action: JWST Detects Faint Blue Companions around Massive Quiescent Galaxies at 0.5 ≤ z ≤ 3.0

open access: yesThe Astrophysical Journal Letters, 2023
Minor mergers are thought to drive the structural evolution of massive quiescent galaxies; however, existing Hubble Space Telescope (HST) imaging is primarily sensitive to stellar mass ratios ≳1:10.
Katherine A. Suess   +19 more
doaj   +1 more source

Searching for tidal tails - investigating galaxy harassment

open access: yes, 2005
Galaxy harassment has been proposed as a physical process that morphologically transforms low surface density disc galaxies into dwarf elliptical galaxies in clusters.
Aboufadel   +30 more
core   +1 more source

The Radio Wave Polarization of Saturn Lightning Observed by Cassini

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 6, June 2025.
Abstract We investigate the polarization of the radio waves emitted by lightning in Saturn's atmosphere, which are referred to as SEDs for Saturn Electrostatic Discharges. Using the complete SED data set retrieved by Cassini's RPWS (Radio and Plasma Wave Science) instrument we found that the circular polarization of SEDs below a frequency of 2 MHz ...
G. Fischer   +4 more
wiley   +1 more source

Simulations of Galaxy Formation in a ΛCDM Universe. III. The Dissipative Formation of an Elliptical Galaxy [PDF]

open access: yes, 2003
We examine the dynamical structure of an elliptical galaxy simulated in the ΛCDM scenario. The morphology of the galaxy evolves dramatically over time in response to the mode and timing of mass accretion; smooth deposition of cooled gas leads to the ...
A. Meza   +3 more
semanticscholar   +1 more source

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