Results 91 to 100 of about 49,590 (221)

Hubble Space Telescope Imaging of the CFRS and LDSS Redshift Surveys---III. Field elliptical galaxies at 0.2 < z < 1.0

, 1999
Surface photometry has been performed on a sample of 46 field elliptical galaxies. These galaxies are described well by a deVaucouleurs R^{1/4} profile. The sample was selected from the combined Canada-France and LDSS redshift surveys and spans the range
Aragon-Salamanca, Barger, Barnes, Barrientos, Baugh, Bender, Bender, Bower, Brinchmann, Courteau, D. Crampton, David Schade, de Vaucouleurs, Dressler, Driver, Ellis, Ellis, Forbes, Franceschini, François Hammer, Guzman, Hammer, Hau, Im, Jarle Brinchmann, Jorgensen, K. Glazebrook, Kauffman, Kauffmann, Kauffmann, Kelson, L. Tresse, Larson, Le Fèvre, Lilly, Marzke, Matthew Colless, Menanteau, Mobasher, Negroponte, O. Le Fèvre, Pahre, Pahre, Patton, Press, R. Abraham, R. S. Ellis, S. J. Lilly, Scalo, Schade, Schade, Schade, Silva, Silva, Stanford, Tom Broadhurst, Totani, van der Kruit, van Dokkum, van Dokkum, White   +60 more
core   +2 more sources

Compact X-ray Sources in Nearby Galaxy Nuclei [PDF]

, 1998
We have found compact, near-nuclear X-ray sources in 21 (54\%) of a complete sample of 39 nearby face-on spiral and elliptical galaxies with available ROSAT HRI data. ROSAT X-ray luminosities (0.2 $-$ 2.4 keV) of these compact X-ray sources are $\sim$10$^
Briel, Cavaliere, Colbert, Colbert, de Vaucouleurs, Dickey, Ebisawa, Edward J.M Colbert, Kormendy, Matsushita, Mitsuda, Nandra, Richard F Mushotzky, Shrader, Tanaka   +14 more
core   +3 more sources

The Bochum Survey of the Southern Galactic Disk: III. Complete Data Release

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°$$ {6}^{{}^{\circ}} $$‐wide stripe in the southern Galactic disk with simultaneous observations in r′$$ {r}^{\prime } $$ and i′$$ {i}^{\prime } $$ (7m≲r′,i′≲18m$$ {7}^{\mathrm{m}}\lesssim {r}^{\prime },{i}^{\prime}\lesssim {18}^{\mathrm{m}} $$) from September ...
Julia Blex, Moritz Hackstein, Christian Westhues, Michael Ramolla, Markus Demleitner, Dominik J. Bomans, Kerstin Weis, Christofer Fein, Rolf Chini   +8 more
wiley   +1 more source

A unified linear intrinsic alignment model for elliptical and disc galaxies and the resulting ellipticity spectra

The Open Journal of Astrophysics
Alignments of disc galaxies were thought to result from tidal torquing, where tidal field of the cosmic large-scale structure exert torquing moments onto dark matter haloes, determining their angular momentum and ultimately the orientation of galactic ...
Basundhara Ghosh, Kai Nussbaumer, Eileen Sophie Giesel, Björn Malte Schäfer   +3 more
doaj   +1 more source

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, Duško Borka, Vesna Borka Jovanović, Predrag Jovanović   +3 more
doaj   +1 more source

RETRACTED: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

Chemie Ingenieur Technik, Volume 98, Issue 3, Page 98-105, March 2026.
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source

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, Massimo Capaccioli, Nicola R. Napolitano, Enrichetta Iodice, Aniello Grado, Luca Limatola, Andrew P. Cooper, Michele Cantiello, Duncan A. Forbes, Maurizio Paolillo, Pietro Schipani   +10 more
doaj   +1 more source

The ‘Photometric Plane’ of elliptical galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2002
To appear in MNRAS.
openaire   +3 more sources

Characterizing the Signals and Backgrounds in a Low Earth Orbiting Cherenkov Detector, and Background Mitigation Strategies

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Cherenkov detectors have been used in space for decades to measure Galactic Cosmic Rays (GCRs), Solar Energetic Particles (SEPs) and trapped particles. We present proof‐of‐concept GRAS/Geant4 simulations to both show that a cubic fused silica Cherenkov detector with SiPM in LEO has a good sensitivity to SEP and GCR protons as a function of cut‐
C. S. W. Davis, F. Lei, K. Ryden, C. Dyer, G. Santin, P. Jiggens, M. Heil   +6 more
wiley   +1 more source

Faint dwarf galaxies in nearby clusters

, 2010
Besides giant elliptical galaxies, a number of low-mass stellar systems inhabit the cores of galaxy clusters, such as dwarf elliptical galaxies (dEs/dSphs), ultra-compact dwarf galaxies (UCDs), and globular clusters.
Dabringhausen, Gilmore, I. Misgeld, M. Hilker, Misgeld, Misgeld, S. Mieske   +6 more
core   +1 more source