Results 1 to 10 of about 655,740 (315)

Formation, Evolution and Properties of Isolated Field Elliptical Galaxies [PDF]

, 2010
[Abridged] We study the properties, evolution and formation mechanisms of isolated field elliptical galaxies. We create a mock catalogue of isolated field elliptical galaxies from the Millennium Simulation Galaxy Catalogue, and trace their merging histories.
Aars, Balogh, Colbert, Collobert, Combes, Croton, D'Onghia, Dariush, de Vaucouleurs, Denicoló, Dressler, Díaz-Giménez, Enn Saar, Farouki, Fukugita, Fukugita, Geller, Harsoula, Hau, Hau, Hernquist, Hernández-Toledo, Huchra, Humason, Jester, Jones, Karachentseva, Kauffmann, Kautsch, Lemson, Lucia, Lucia, Marcum, Memola, Mihos, Moore, Mulchaey, Nolthenius, Norberg, O'Sullivan, Oemler, Pasi Nurmi, Pekka Heinämäki, Proctor, Ramella, Reda, Reda, Reda, Reduzzi, Sami-Matias Niemi, Simien, Sivakoff, Smith, Smith, Spergel, Springel, Stocke, Toomre, Treu, von Benda-Beckmann   +59 more
arxiv   +7 more sources

Chaos and Elliptical Galaxies [PDF]

CELESTIAL MECHANICS AND DYNAMICAL ASTRONOMY, 1995
Recent results on chaos in triaxial galaxy models are reviewed. Central mass concentrations like those observed in early-type galaxies -- either stellar cusps, or massive black holes -- render most of the box orbits in a triaxial potential stochastic ...
CFF Karney, D Lynden-Bell, D Merritt, GG Kuzmin, GG Kuzmin, GM Zaslavsky, HC Ford, HE Kandrup, J Binney, J Goodman, J Goodman, J Kormendy, JJ Binney, L Ferrarese, M Miyoshi, M Schwarzschild, M Schwarzschild, M Schwarzschild, ME Mahon, NS Krylov, O Gerhard, PT Zeeuw de, PT Zeeuw de, RL Davies, T Statler   +24 more
core   +7 more sources

Development of hard X-ray photoelectron spectroscopy in liquid cells using optimized microfabricated silicon nitride membranes. [PDF]

J Synchrotron Radiat
We have developed and successfully tested new environmental liquid cells for HAXPES studies using specially designed thin, low‐stress silicon nitride membranes (15 to 25 nm thickness). The novel aspect is the fabrication of the membranes considering the geometry of the experimental setup, the dimensions of the beam and the use of platinum stripes to ...
Capone F, Muntada O, Ramírez JC, Esplandiu MJ, Dedryvère R, Grimaud A, Lassalle-Kaiser B, Céolin D, Pérez-Murano F, Rueff JP, Fraxedas J.   +10 more
europepmc   +2 more sources

The Elliptical-Spheroidal and Elliptical-Elliptical Galaxy Dichotomies [PDF]

arXiv, 2008
This paper summarizes Kormendy et al. (2009, ApJS, in press, arXiv:0810.1681). We confirm that spheroidal galaxies have fundamental plane correlations that are almost perpendicular to those for bulges and ellipticals. Spheroidals are not dwarf ellipticals. They are structurally similar to late-type galaxies.
arxiv   +3 more sources

The Relationship between Slope and Luminosity [PDF]

Kirkuk Journal of Science, 2010
In this study, a sample of galaxies has been adopted. It consists of 112 elliptical galaxies, among them were 56 dwarf elliptical galaxies, which belong to virgo cluster, 37 normal galaxies and 19 bright galaxies. Also, surface brightness profiles fitted
Mohsen H. Ali AL-Khafajy
doaj   +1 more source

Analysis of the escape in systems with four exit channels

Mathematical Methods in the Applied Sciences, Volume 46, Issue 1, Page 1032-1044, 15 January 2023., 2023
In this paper, we have performed a numerical investigation of the escape of a particle from two different dynamical systems with the same number of exit channels. We have chosen specific values of the parameters of the systems so that the openings of the potential well in both systems are approximately of the same size.
Juan F. Navarro, Ibrahim Belgharbi, María del Carmen Martínez‐Belda   +2 more
wiley   +1 more source

Dwarf elliptical galaxies [PDF]

The Astronomy and Astrophysics Review, 1994
63p, uuencoded compressed postscript, 2/8 figs included, A&A Review in press, request paper copies from ferguson@stsci.edu, STScI ...
Bruno Binggeli, Henry C. Ferguson
openaire   +3 more sources

Deviations of the Surface Brightness Distribution in Isolated Elliptical Galaxies [PDF]

مجلة التربية والعلم, 2012
In this paper, we present the surface brightness profiles of 48 isolated elliptical galaxies. we have adopted the r1/n – law to the observed surface brightness profiles of the adopted sample of isolated elliptical galaxies for the intermediate radial ...
Omar Salih
doaj   +1 more source

The Fate of the Interstellar Medium in Early-type Galaxies. II. Observational Evidence for Morphological Quenching

The Astrophysical Journal, 2023
The mechanism by which galaxies stop forming stars and get rid of their interstellar medium (ISM) remains elusive. Here, we study a sample of more than 2000 elliptical galaxies in which dust emission has been detected.
Aleksandra Leśniewska, M. J. Michałowski, C. Gall, J. Hjorth, J. Nadolny, O. Ryzhov, M. Solar   +6 more
doaj   +1 more source

Planetary Nebulae and the Ionization of the Interstellar Medium in Galaxies

Frontiers in Astronomy and Space Sciences, 2022
We discuss the role of planetary nebulae and their progeny in galaxy context in terms of ionization of the galaxy interstellar medium. This regards ionized gas outside the disk of spiral galaxies, the diffuse ionized medium in spiral galaxies, and the ...
Grażyna Stasińska, Marina Trevisan, Natalia Vale Asari   +2 more
doaj   +1 more source