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Type of spiral galaxy without a central bar
The Whirlpool Galaxy and its companion satellite. The Whirlpool is an unbarred spiral galaxy.
An unbarred spiral galaxy[1][2] is a type of spiral galaxy without a central bar, or one that is not a barred spiral galaxy. It is designated with an SA in the galaxy morphological classification scheme.
Barless spiral galaxies are one of three general types of spiral galaxies under the de Vaucouleurs system classification system, the other two being intermediate spiral galaxy and barred spiral galaxy. Under the Hubble tuning fork, it is one of two general types of spiral galaxy, the other being barred spirals.
^Astronomical Journal, "Near-infrared surface photometry and morphology in virgo cluster spiral galaxy nuclear regions", Bernard J. Rauscher, April 1995, Bibcode:1995AJ....109.1608R, doi:10.1086/117389
^Astronomy Pictures, "M99" (accessed 18 April 2010)
and 30 Related for: Unbarred spiral galaxy information
An unbarredspiralgalaxy is a type of spiralgalaxy without a central bar, or one that is not a barred spiralgalaxy. It is designated with an SA in the...
barred spiralgalaxy is a spiralgalaxy with a central bar-shaped structure composed of stars. Bars are found in about two thirds of all spiralgalaxies in...
An intermediate spiralgalaxy is a galaxy that is in between the classifications of a barred spiralgalaxy and an unbarredspiralgalaxy. It is designated...
components varies from galaxy to galaxy. Spiral arms are regions of stars that extend from the center of barred and unbarredspiralgalaxies. These long, thin...
The Triangulum Galaxy is a spiralgalaxy 2.73 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC...
NGC 3628, also known as the Hamburger Galaxy or Sarah's Galaxy, is an unbarredspiralgalaxy about 35 million light-years away in the constellation Leo...
The Whirlpool Galaxy, also known as Messier 51a (M51a) or NGC 5194, is an interacting grand-design spiralgalaxy with a Seyfert 2 active galactic nucleus...
A lenticular galaxy (denoted S0) is a type of galaxy intermediate between an elliptical (denoted E) and a spiralgalaxy in galaxy morphological classification...
Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiralgalaxy about 12 million light-years away in the constellation Ursa Major...
engineering Superabundant number, a type of number (mathematical concept) Unbarredspiralgalaxy Short axis, in single-photon emission computed tomography Surface...
NGC 4622 is a face-on unbarredspiralgalaxy with a very prominent ring structure located in the constellation Centaurus. The galaxy is a member of the Centaurus...
Phantom Galaxy) is a large spiralgalaxy in the equatorial constellation Pisces. It is about 32 million light-years away from Earth. The galaxy contains...
63 or M63, also known as NGC 5055 or the seldom-used Sunflower Galaxy, is a spiralgalaxy in the northern constellation of Canes Venatici with approximately...
NGC 7331, also known as Caldwell 30, is an unbarredspiralgalaxy about 40 million light-years (12 Mpc) away in the constellation Pegasus. It was discovered...
4567 and NGC 4568 (nicknamed the Butterfly Galaxies or Siamese Twins) are a set of unbarredspiralgalaxies about 60 million light-years away in the constellation...
Fried Egg Galaxy is a face-on unbarredspiralgalaxy in the constellation Pegasus. It is also classified as a Type II Seyfert Galaxy. The galaxy is unusual...
NGC 772 (also known as Arp 78) is an unbarredspiralgalaxy approximately 130 million light-years away in the constellation Aries. At around 200,000 light...
Messier 94 (also known as NGC 4736, Cat's Eye Galaxy, Crocodile Eye Galaxy, or Croc's Eye Galaxy) is a spiralgalaxy in the mid-northern constellation Canes...
This is a list of ring galaxies. A ring galaxy, as the name suggests, is a disc or spiralgalaxy with its galactic disc structured or distorted into a...
NGC 2997 is a face-on unbarredspiralgalaxy about 40 million light-years away in the faint southern constellation of Antlia. It was discovered March 4...
NGC 6902 is an unbarredspiralgalaxy located in the southern constellation of Sagittarius at an approximate distance of 124 million light-years (38.0 Mpc)...
NGC 3949 is an unbarredspiralgalaxy in the constellation Ursa Major. It is believed to be approximately 50 million light-years away from the Earth. NGC...
NGC 7217 is an unbarredspiralgalaxy in the constellation Pegasus. NGC 7217 is a gas-poor system whose main features are the presence of several rings...
NGC 4565 (also known as the Needle Galaxy or Caldwell 38) is an edge-on spiralgalaxy about 30 to 50 million light-years away in the constellation Coma...
masses/year. Additionally, despite being originally classified as an unbarredspiralgalaxy, new Hubble images clearly show the presence of a small bar cutting...
and unbarredspirals forming the two parallel prongs of the fork on the right. Lenticular galaxies are placed between the ellipticals and the spirals, at...
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