Dwarf galaxy
A dwarf galaxy is a small galaxy composed of up to several billion stars, a small number compared to our own Milky Way's 200-400 billion stars.
Antlia Dwarf Galaxy
Image credit: Very Large Telescope, ESO
A small dwarf spheroidal galaxy, of low surface brightness, that lies about 3.75 million light-years away in the constellation Antlia and is an outlying member of the Local Group.
The Antlia Dwarf Galaxy
On the original sky survey plate Antlia looks like a fuzzy low surface brightness patch some 3mm (= 3 arcmin) in diameter.
Early heatwave stunts
dwarf galaxy growth
by Nicky Guttridge
for ASTRONOMY NOW
Posted: 11 October 2010 ...
dwarf galaxy
a small galaxy containing a few million stars; the most common type of galaxy in the universe
dwarf star ...
Dwarf Galaxy: Small, low luminosity galaxies that are associated with larger spiral galaxies and may make up part of a galactic halo.
DWARF GALAXY - Relatively small galaxy, typically containing ~107 stars. There is no official size below which a galaxy is designated a dwarf but any galaxy with a diameter below 30,000 light years can be considered a dwarf.
Dwarf Galaxy
A galaxy at the faint end of the general lumisosity function and generally exhibiting ing low surface brightness. [BFM2006]
Dwarf Nova ...
Tidal Dwarf Galaxy. A self-gravitating entity of dwarf-galaxy mass, built from tidal material expelled during interactions. Examples include AM0547-244, AM1054-325 and AM1353-272 (see Weilbacher, et al., Astron. Astrophys., 358, 819, 2000) ...
Dwarf galaxy
Dwarf elliptical galaxy
Dwarf spheroidal galaxy
Galaxy morphological classification
Hubble sequence ...
Dwarf Galaxy
A relatively small galaxy. The Large and Small Magellanic Clouds, visible in the Southern Hemisphere, are two dwarf irregular galaxies that are neighbors of the Milky Way.
Elliptical Galaxy ...
"If a dwarf galaxy were a peach, the standard cosmological model says we should find a dark matter 'pit' at the center. Instead, the first two dwarf galaxies we studied are like pitless peaches," said Penarrubia.
The Draco Dwarf Galaxy is a spheroidal galaxy and a satellite galaxy to the Milky Way.
Main article: Dwarf galaxy
Despite the prominence of large elliptical and spiral galaxies, most galaxies in the universe appear to be dwarf galaxies.
The Ursa Minor dwarf galaxy resides here and at magnitude 2.0 is easily visible in binoculars.
The "engagement ring" asterism is located near Polaris. It's a circle of stars visible in binoculars and telescopes.
The Canis Major Dwarf Galaxy is the closest galaxy to ours. It is actually contained within the Milky Way and only 42,000 light years form the galactic core.
Called the Canis Major dwarf galaxy after the constellation in which it lies, it is about 25,000 light years away from the solar system and 42,000 light years from the center of the Milky Way.
I Zwicky 18 is a nearby dwarf galaxy that started forming stars only 500 million to one billion years ago. It may be an example of what the galaxies were like over 12 billion years ago.
'The Tadpole', located 420 million light years away in the of constellation Draco, contains a large galaxy (UGC 10214) in the process of shredding a smaller dwarf galaxy (one of the two in the upper left corner of the larger galaxy).
(Added 12/26/05) In 1987, earthbound observers saw a star explode in the nearby dwarf galaxy called the Large Magellanic Cloud.
The tidal forces of the Milky Way slowly pull apart the Canis Major dwarf galaxy (shown here in red). The stars ripped off in this fashion, surround the galaxy in a vast ring.
The Leo 1 dwarf galaxy
AAT 61. NGC 3623, M65, a spiral galaxy in Leo
AAT 62. NGC 3627, M66 a spiral galaxy in Leo
AAT 63. NGC 3628, an edge-on galaxy in the Leo Group
AAT 80. NGC 2818A, planetary nebula in cluster
AAT 62.
It is an elliptical dwarf galaxy with a diameter of only 8,000 light-years. M32 was the first elliptical galaxy to be discovered, and is the closest elliptical galaxy to us. Its close proximity gives it a visual magnitude of 8.
(2) Any object with surface brightness too low (much less than about 1% of the night-sky brightness) would only be found when near enough for individual stars to be seen (this is how the Sculptor dwarf galaxy was discovered).
The galaxy that is nearest to our galaxy may is the Sagittarius Dwarf galaxy, which is about 24 kiloparsecs or 80,000 light years from us. The Large Magellanic Cloud is another close galaxy; it is about 50 kiloparsecs from us.
Galaxy Links:
from NASA ...
Very faint; the larger the scope the better. This irregular dwarf galaxy is about 1.7 million light years away, making it one of the closest of its kind. It's in the same region as 54 Sgr, six degrees northeast of rho Sgr.
The two Magellanic Clouds are irregular galaxy dwarf galaxy Galaxy morphological classification, which are members of our Local Group of galaxies....
Messier object
Messier object ...
The invisibility of "Galaxy X"- as the purported body has been dubbed - may be due less to its apparent status as a dwarf galaxy than to its murky location and its overwhelming amount of dark matter, astronomer Sukanya Chakrabarti speculates.
In April 1997 a new member of our Local Group of galaxies was found in Antlia. This spheroidal dwarf galaxy was discovered by research students Alan Whiting and George Hau of Cambridge University.
Others are considered issues such as the cuspy halo problem and the dwarf galaxy problem of cold dark matter are considered to be non-fatal, and to be fixable through relatively minor fixes to the theory.
My first view of the Sculptor Dwarf Galaxy was with my jacket collar pulled up over my binocular eyepieces. I looked like a cross between the Headless Horseman and the Guns of Navarone, but I saw the galaxy.
Similarly, the Andromeda Galaxy is not our nearest galactic neighbor. That distinction goes to the Sagittarius Dwarf Galaxy, SagDEG, which is currently being devoured by our own galaxy, in a process known as Galactic Cannibalism.
 See also: Dwarf, Galaxy, Galaxies, Star, Light
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