Comparative photometric parameters of dwarf irregular and elliptical galaxies in the Virgo Cluster - Two different classes of dwarf galaxies?

1986 ◽  
Vol 92 ◽  
pp. 1007 ◽  
Author(s):  
Gregory D. Bothun ◽  
Jeremy R. Mould ◽  
Nelson Caldwell ◽  
Harvey T. MacGillivray
Keyword(s):  
Dwarf Galaxies ◽  
Elliptical Galaxies ◽  
Virgo Cluster

scholarly journals Kinematic properties and dark matter fraction of Virgo dwarf early-type galaxies

2012 ◽  
Vol 10 (H16) ◽  
pp. 335-335
Author(s):  
E. Toloba ◽  
A. Boselli ◽  
R. Peletier ◽  
J. Gorgas
Keyword(s):  
Dark Matter ◽  
Galaxy Evolution ◽  
Dwarf Galaxies ◽  
Elliptical Galaxies ◽  
Virgo Cluster ◽  
Early Type ◽  
Late Type ◽  
Fundamental Plane ◽  
Ram Pressure ◽  
Kinematic Properties

AbstractWhat happens to dwarf galaxies as they enter the cluster potential well is one of the main unknowns in studies of galaxy evolution. Several evidence suggests that late-type galaxies enter the cluster and are transformed to dwarf early-type galaxies (dEs). We study the Virgo cluster to understand which mechanisms are involved in this transformation. We find that the dEs in the outer parts of Virgo have rotation curves with shapes and amplitudes similar to late-type galaxies of the same luminosity (Fig. 1). These dEs are rotationally supported, have disky isophotes, and younger ages than those dEs in the center of Virgo, which are pressure supported, often have boxy isophotes and are older (Fig. 1). Ram pressure stripping, thus, explains the properties of the dEs located in the outskirts of Virgo. However, the dEs in the central cluster regions, which have lost their angular momentum, must have suffered a more violent transformation. A combination of ram pressure stripping and harassment is not enough to remove the rotation and the spiral/disky structures of these galaxies. We find that on the the Faber-Jackson and the Fundamental Plane relations dEs deviate from the trends of massive elliptical galaxies towards the position of dark matter dominated systems such as the dwarf spheroidal satellites of the Milky Way and M31. Both, rotationally and pressure supported dEs, however, populate the same region in these diagrams. This indicates that dEs have a non-negligible dark matter fraction within their half light radius.

scholarly journals Origin of Non-axisymmetric Features of Virgo Cluster Early-type Dwarf Galaxies. I. Bar Formation and Recurrent Buckling

2017 ◽  
Vol 839 (1) ◽  
pp. 24 ◽  
Author(s):  
SungWon Kwak ◽  
Woong-Tae Kim ◽  
Soo-Chang Rey ◽  
Suk Kim
Keyword(s):  
Dwarf Galaxies ◽  
Virgo Cluster ◽  
Early Type ◽  
Bar Formation

scholarly journals COLOR–MAGNITUDE RELATIONS OF EARLY-TYPE DWARF GALAXIES IN THE VIRGO CLUSTER: AN ULTRAVIOLET PERSPECTIVE

2010 ◽  
Vol 721 (1) ◽  
pp. L72-L77 ◽  
Author(s):  
Suk Kim ◽  
Soo-Chang Rey ◽  
Thorsten Lisker ◽  
Sangmo Tony Sohn
Keyword(s):  
Dwarf Galaxies ◽  
Virgo Cluster ◽  
Early Type

Spectroscopy of (candidate) blue compact dwarf galaxies in the Virgo cluster field. II

1988 ◽  
Vol 96 ◽  
pp. 458
Author(s):  
Regina E. Schulte-Ladbeck ◽  
Jason A. Cardelli
Keyword(s):  
Dwarf Galaxies ◽  
Virgo Cluster

Hubble Space Telescope photometry of the central regions of Virgo cluster elliptical galaxies. 3: Brightness profiles

1994 ◽  
Vol 108 ◽  
pp. 1598 ◽  
Author(s):  
L. Ferrarese ◽  
F. C. van den Bosch ◽  
H. C. Ford ◽  
W. Jaffe ◽  
R. W. O'Connell
Keyword(s):  
Hubble Space Telescope ◽  
Elliptical Galaxies ◽  
Virgo Cluster ◽  
Space Telescope ◽  
Central Regions
Sign in / Sign up

Export Citation Format

Share Document