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Dwarf elliptical galaxy

Astronomy Dwarf CepheidDwarf galaxy

Dwarf elliptical galaxy
Dwarf elliptical galaxies are elliptical galaxies that are much smaller than others, classified as dE. They are quite common, and are usually companions to other galaxies.

 


This dwarf elliptical galaxy is a satellite of Great Andromeda Galaxy (M31) and was discovered by LeGentil in 1749. Messier noticed it on Aug. 3, 1764, next to M31.

dwarf elliptical galaxy - (n.)
A member of a class of small spheroidal galaxies, similar to standard elliptical galaxies except for their small size and low luminosity.

A dwarf elliptical galaxy (Mv = - 11.28 mag, mass about 3 × 106 M), about 85 kpc distant, in the Local Group. Discovered in 1938.
Scuti Stars ...

Dwarf galaxy
Dwarf elliptical galaxy
Dwarf spheroidal galaxy
Galaxy morphological classification
Hubble sequence ...

The Sagittarius Dwarf Elliptical Galaxy is a loop-shaped galaxy and one of the closest satellite galaxies of the Milky Way. It contains at least four globular star clusters.

Sagittarius Dwarf Elliptical Galaxy
Sagittarius Dwarf Irregular Galaxy
Saha equation
Saiph (Kappa Orionis)
Sakurai's Object
Salpeter function
San Francisco State University Planet Search
Sargas (Theta Scorpii)
Saros
satellite ...

The dwarf elliptical galaxy SagDEG in the direction of the Milky Way's center is stretched and distorted from the tidal effects of the Milky Way's strong gravity.

Our own galaxy (the Milky Way) has a tiny satellite galaxy (the Sagittarius Dwarf Elliptical Galaxy) which is currently gradually being ripped up and "eaten" by the Milky Way.

The Large and Small Magellanic Clouds (LMC and SMC) are small well-known Milky Way companions, but nearer to our Galaxy are the more recently discovered Canis Major Dwarf and Sag DEG (Sagittarius Dwarf Elliptical Galaxy).

Some of the dwarf galaxies orbiting the Milky Way are Canis Major Dwarf (the closest), Sagittarius Dwarf Elliptical Galaxy, Ursa Minor Dwarf, Sculptor Dwarf, Sextans Dwarf, Fornax Dwarf, and Leo I Dwarf.

An intrinsically faint (Mv - 9) dwarf elliptical galaxy about 70 pc distant, in the Local Group. [H76]
U Velocity ...

After the discovery in the last decade that our own Milky Way has a satellite galaxy (the Sagittarius Dwarf Elliptical Galaxy, or SagDEG) which is currently gradually being ripped up and "eaten" by the Milky Way, ...

Figure 24.14 Two well-known neighbors of the Andromeda Galaxy (M31): (a) the spiral galaxy M33 and (b) the dwarf elliptical galaxy M32 (also visible in Figure 23.2a, a larger-scale view of the Andromeda system).

While this assertion may well be correct, we only have evidence of massive black holes in large galaxies - like the Milky Way or larger - and in one dwarf elliptical galaxy: M32 in the Local Group.

In 1994 the discovery was made that this cluster does not belong to our galaxy but to the Sagittarius Dwarf Elliptical Galaxy.
A large, but loose globular cluster is M55. It can be viewed with binoculars.

See also: Elliptical Galaxy, Dwarf, Galaxy, Galaxies, Star