Results 91 to 100 of about 194,444 (226)
ELLIPTICITIES OF ELLIPTICAL GALAXIES IN DIFFERENT ENVIRONMENTS
The Astrophysical Journal, 2016 ABSTRACT We studied the ellipticity distributions of elliptical galaxies in different environments. From the ninth data release of the Sloan Digital Sky Survey, we selected galaxies with absolute -band magnitudes between −21 and −22.
Cheng-Yu Chen +2 more
openaire +1 more source
Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions
Journal of Field Robotics, Volume 43, Issue 4, Page 2553-2584, June 2026.ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos +6 more
wiley +1 more source
H
, 1997 Traditional HI surveys of optically selected elliptical galaxies are time-consuming, and have a low detection rate. The forthcoming Parkes HI multibeam survey offers the exciting possibility of surveying more than 10,000 nearby elliptical galaxies for HI.
Elaine M. Sadler
core +1 more source
Hot Interstellar Matter in Elliptical Galaxies
, 2010 The physical properties of the hot interstellar matter in elliptical galaxies are directly related with the formation and evolution of elliptical galaxies via star formation episodes, environmental effects such as stripping, infall, and mergers, and ...
Kim D. W., PELLEGRINI, SILVIA
core +2 more sources
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
Exploring the star formation histories of galaxies [PDF]
, 1999 In this thesis, I explore the star formation histories of both spiral and elliptical galaxies. In Part 1,1 present an in-depth study of the star formation histories of spiral galaxies with a wide range of properties. Optical and near-infrared colours are
Bell, Eric Findlay, Bell, E.F.
core
A Photometric Study of Giant Ellipticals and Their Stellar Halos With VST
Galaxies, 2017 Observations of diffuse starlight in the outskirts of galaxies are thought to be a fundamental source of constraints on the cosmological context of galaxy assembly in the Λ CDM model.
Marilena Spavone +10 more
doaj +1 more source
Probing the Age of Elliptical Galaxies
, 1996 In this paper we address the question whether age and metallicity effects can be disentangled with the aid of the broad-band colours and spectral indices from absorption feature strengths, so that the age of elliptical galaxies can be inferred. The observational data under examination are the indices Hbeta and [MgFe], and the velocity dispersion Sigma ...
Bressan, A., Chiosi, C., Tantalo, R.
openaire +3 more sources
Do elliptical galaxies have thick disks? [PDF]
, 1990 The authors discuss new evidence which supports the existence of thick disks in elliptical/SO galaxies. Numerical simulations of weak interactions with thick disk systems produce shell structures very similar in appearance to those observed in many shell
Thomson, R. C., Wright, A. E.
core
SIMULATIONS OF LARGE-SCALE GASEOUS STRUCTURES WITH SPH
Odessa Astronomical Publications, 2017 A computer programme based on the 3D SPH approach is described. Some numerical results are presented: the formation of gaseous ring around an SO galaxy due to the stripping of a gas-rich donor system.
N. Ya. Sotnikova
doaj +1 more source