Results 91 to 100 of about 4,131 (126)

NGC 5266 - an elliptical galaxy with a dust ring

, 1987
Results of an inquiry into the nature of the southern galaxy NGC 5266 are presented. New surface photometry indicates that it is an E4 class elliptical with a narrow and slightly warped dust ring wrapping its stellar body in the plane containing its ...
CARTER D., BERTOLA, FRANCESCO, FREEMAN K. C., GALLETTA, GIUSEPPE, VARNAS S. R.   +4 more
core   +1 more source

Stellar Population Synthesis of the Elliptical Galaxy NGC 4649 [PDF]

Journal of Astronomy and Space Sciences, 2001
We investigated population of the elliptical galaxy NGC 4649 using the spectral synthesis technique based on the linear program in the spectral regions between 3160Å to 10800Å. We used the spectral data of stars obtained by Gunn & Stryker (1983), and the
Mun-Suk Chun, Moon-Whan Gim, Young-Jong Sohn   +2 more
doaj  

BL Lac Host Galaxies: How to Systematically Characterize Them in Optical–Near-infrared Spectroscopy

The Astrophysical Journal
Host galaxies of active galactic nuclei (AGN) give crucial information on the interaction between accreting supermassive black holes and their surroundings and on their common evolution.
Gaia Delucchi, Tullia Sbarrato, Giorgio Calderone, Chiara Righi, Silvano Tosi, Boris Sbarufatti   +5 more
doaj   +1 more source

Spectral analysis of the elliptical galaxy NGC 7796 with suzaku

Journal of Radiation Research and Applied Sciences
We report Suzaku X-ray spectral analysis of the elliptical galaxy NGC 7796. We found the temperature and the abundances of O (∼0.54 keV), Ne (∼0.87 keV), Mg (∼1.30 keV), Si (∼1.84 keV), (hearafter O–Si), and Fe (∼6.4 keV) in the NGC 7796 for the first ...
Ebru Aktekin Çalışkan
doaj   +1 more source

Galaxy evolution as a function of mass and environment: giant and dwarf galaxies in superclusters and in the field

, 2008
It has been known for decades that local galaxies can be broadly divided into two distinct populations (e.g. Hubble 1926, 1936; Morgan 1958; de Vaucouleurs 1961).
Gargiulo, Adriana
core  

MOND prediction of a new giant shell in the elliptical galaxy NGC 3923

, 2014
Context. Stellar shells, which form axially symmetric systems of arcs in some elliptical galaxies, are most likely remnants of radial minor mergers. They are observed up a radius of ~100 kpc. The stars in them oscillate in radial orbits.
K. Bartošková, I. Ebrová, M. Bílek, B. Jungwiert   +3 more
core   +1 more source

No Evidence of a Dichotomy in the Elliptical Galaxy Population

The Astrophysical Journal
The advent of large integral field spectroscopic surveys has found that elliptical galaxies (EGs) can be divided into two classes: the fast rotators (whose kinematics are dominated by rotation) and the slow rotators (which exhibit slow or no rotation ...
Rogério Monteiro-Oliveira, Yen-Ting Lin, Wei-Huai Chen, Chen-Yu Chuang, Abdurro’uf, Po-Feng Wu   +5 more
doaj   +1 more source

The elliptical galaxy colour-magnitude relation as a discriminant between the monolithic and merger paradigms

, 2017
The colour-magnitude relation (CMR) of cluster elliptical galaxies has been widely used to constrain their star formation histories (SFHs) and to discriminate between the monolithic collapse and merger paradigms of elliptical galaxy formation. We use a Λ
Kaviraj, S., Ferreras, I., Devriendt, J. E. G., Yi, S. K.   +3 more
core  

Evolution of Massive Red Galaxies in Clusters from z = 1.0 to z = 0.3

The Astronomical Journal
A critical issue in studying the evolution of galaxy clusters is to find ways that enable meaningful comparisons of clusters observed at different redshifts, as well as in various stages of their growth.
Yen-Ting Lin, Kai-Feng Chen, Tsung-Chi Chen, Chen-Yu Chuang, Masamune Oguri   +4 more
doaj   +1 more source

Dark matter deprivation in the field elliptical galaxy NGC 7507

, 2015
Context. Previous studies have shown that the kinematics of the field elliptical galaxy NGC 7507 do not necessarily require dark matter. This is troubling because, in the context of ΛCDM cosmologies, all galaxies should have a large dark matter component.
Tom Richtler, Ricardo Salinas, Richard R. Lane   +2 more
core   +1 more source