scholarly journals Dwarf elliptical galaxies as ancient tidal dwarf galaxies

2013 ◽  
Vol 429 (3) ◽  
pp. 1858-1871 ◽  
Author(s):  
J. Dabringhausen ◽  
P. Kroupa
Keyword(s):  
Dwarf Galaxies ◽  
Elliptical Galaxies ◽  
Dwarf Elliptical Galaxies

scholarly journals Morphology and Environment of Dwarf Galaxies in the Local Universe

2007 ◽  
Vol 3 (S244) ◽  
pp. 346-347
Author(s):  
H. B. Ann
Keyword(s):  
Dwarf Galaxies ◽  
Elliptical Galaxies ◽  
Significant Fraction ◽  
Local Universe ◽  
Irregular Galaxies ◽  
Dwarf Elliptical Galaxies ◽  
Dwarf Irregular Galaxies

AbstractAnalysis of dwarf galaxies in the local universe shows that dwarf irregular galaxies are its dominant populations and the majority of dwarf elliptical galaxies are likely to be located in the overdense regions, However, a significant fraction of blue dwarf ellipticals (dEblue) and peculiar dwarf ellipticals (dEpec are found to be located in the under-dense regions.

scholarly journals Dwarf Elliptical Galaxies in the Cena and Sculptor Groups

1998 ◽  
Vol 11 (1) ◽  
pp. 107-108
Author(s):  
H. Jerjen ◽  
K.C. Freeman ◽  
B. Binggeli
Keyword(s):  
Dwarf Galaxies ◽  
Dwarf Galaxy ◽  
Elliptical Galaxies ◽  
Large Program ◽  
Irregular Galaxies ◽  
First Results ◽  
Complete Survey ◽  
Group Members ◽  
Dwarf Elliptical Galaxies ◽  
Dwarf Irregular Galaxies

Côté (1995) surveyed the nearby Centaurus A (Cen A) and Sculptor (Sci) group regions in the search for gas-rich, dwarf irregular galaxies (Irr) which are associated with these galaxy aggregates. 36 Irrs have been found and confirmed as new group members via 21cm/Hα redshifts. In finding this large number of Irrs, the question rises whether systems from the other dwarf galaxy family, the gas-poor dwarf ellipticals (dE), also exist in the two groups. So far nothing is known about dE membership but taking into account the morphology-density relation for dwarfs (Binggeli et al. 1990) a number ratio Irr/dE≈ 1 - 2 would be expected. Prompted by these “missing” dEs we started a large program to identify and study dEs in Cen A and Sci. The main scientific goals are (1) to find dE candidates and to establish group membership via velocity or distance and (2) to estimate the luminosity function (LF) of dwarf galaxies to the faintest possible luminosities. For the two groups, being respectively at a mean distance of 4.0 Mpc and 2.5 Mpc, we will be able to reach dwarf galaxies 4-5 magnitudes fainter than in the previous studies in the Virgo and Fornax clusters and the five groups Leo I, Dorado, NGC1400, NGC5044, and Antlia (Sandage et al. 1985, Ferguson &: Sandage 1990). We briefly outline here first results from the CenA group. All details about the complete survey including Scl will be presented in Jerjen et al. (1997)

Evolution of dwarf galaxies in a semi-analytic galaxy formation model

2018 ◽  
Vol 14 (S344) ◽  
pp. 491-494
Author(s):  
Masahiro Nagashima ◽  
Motohiro Enoki ◽  
Tomoaki Ishiyama ◽  
Masakazu A. R. Kobayashi ◽  
Ryu Makiya ◽  
...  
Keyword(s):  
Galaxy Formation ◽  
Cold Dark Matter ◽  
Dwarf Galaxies ◽  
Elliptical Galaxies ◽  
Dynamical Response ◽  
Cold Dark Matter Model ◽  
Gas Removal ◽  
Dwarf Elliptical Galaxies ◽  
Velocity Dispersions ◽  
Dark Matter Model

AbstractDwarf galaxies provide us many important clues to understanding of galaxy formation. By using the current version of our own semi-analytic model of galaxy formation, in which cosmic structure forms and evolves based on the cold dark matter model of cosmology, we analyze dwarf galaxies. We find that the model well reproduces many properties such as magnitudes, sizes, and velocity dispersions of, especially, dwarf elliptical galaxies. We also find that the dynamical response of the gravitational potential well of dwarf galaxies to the supernova-induced gas removal plays a very important role to obtain large sizes and small velocity dispersions as observed.

scholarly journals Embedded disks in Fornax dwarf elliptical galaxies

2003 ◽  
Vol 400 (1) ◽  
pp. 119-125 ◽  
Author(s):  
S. De Rijcke ◽  
H. Dejonghe ◽  
W. W. Zeilinger ◽  
G. K. T. Hau
Keyword(s):  
Elliptical Galaxies ◽  
Dwarf Elliptical Galaxies ◽  
Embedded Disks

scholarly journals Physical Properties of Nearby Dwarf Elliptical Galaxies

2006 ◽  
Vol 2 (S235) ◽  
pp. 69-69
Author(s):  
M. R. Seo ◽  
H. B. Ann
Keyword(s):  
Physical Properties ◽  
Stellar Populations ◽  
Elliptical Galaxies ◽  
High Density ◽  
Emission Lines ◽  
Dwarf Elliptical Galaxies ◽  
Nuclear Regions

AbstractMost dwarf elliptical galaxies except for ‘dE, N’ galaxies which are characterized by young stellar populations in the nuclear regions are located in the high density environment. The colors and spectra of ‘dE, N’ galaxies are different from other types, in the sense that they have redder colors with little emission lines. The majority of dwarf elliptical galaxies are younger than 7 Gyr with metallicity larger than [z/H]=−0.5.

scholarly journals Surface brightness fluctuation distances for nearby dwarf elliptical galaxies

2001 ◽  
Vol 380 (1) ◽  
pp. 90-101 ◽  
Author(s):  
H. Jerjen ◽  
R. Rekola ◽  
L. Takalo ◽  
M. Coleman ◽  
M. Valtonen
Keyword(s):  
Surface Brightness ◽  
Elliptical Galaxies ◽  
Brightness Fluctuation ◽  
Dwarf Elliptical Galaxies
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