M31
M31 can mean:
*Andromeda Galaxy
*A gun used in the Soviet Union
M31: A Family Romance, a novel by Stephen Wright ...
Can be seen with the naked eye.
Close enough that powerful telescopes can resolve individual stars. When Hubble showed how far away M31 is, it revolutionized our ideas about the scale of the universe.
M31, the Andromeda Galaxy
The nearest large galaxy to our own, a class Sb spiral, and a major member of the Local Group.
Located in the constellation Andromeda can be found M31, the famous Andromeda Galaxy. This spectacular object is a spiral galaxy similar to our own Milky Way. At a distance of only 2 million light-years, it is one of the closest galaxies to our own.
M31 = NGC224 ( 0h 42.7m +41°16´, 3.4 mag. )
Great Andromeda Galaxy was known since at least AD905 when it was listed by Al Sufi. It was observed by Messier on Aug. 3, 1764. At 2.
M31
The Andromeda galaxy, the largest member of the local group. It is a giant spiral galaxy that lies 2.4 million light-years away.
M32 ...
The M31 Galaxy
The solar system is part of the Milky Way Galaxy, a disk-shaped collection of stars, one of billions of galaxies in the universe.
M31
M31 (commonly known as Andromeda Galaxy) is the closest major to us. It is a (like our galaxy, the ). It can just be seen with the naked eye.
M31
M31 (commonly known as Andromeda Galaxy) is the closest major galaxy to us. It is a spiral galaxy (like our galaxy, the Milky Way). It can just be seen with the naked eye.
M31 The Andromeda Galaxy
Description: spiral galaxy
Constellation: Andromeda
Small Image
Large Image ...
M31 the Andromeda galaxy is a wide spiral galaxy. Use low magnification and a wide angle view to observe it.
M31 (NGC 224), "The Andromeda Galaxy", is the finest spiral galaxy in the heavens, and probably the most well known. The galaxy lies at about a fifteen degree angle from being edge-on; it has a bright oval nucleus. Its distance is approximately 2.
M31 is known to harbor a dense and compact star cluster at its very center. In a large telescope it creates a visual impression of a star embedded in the more diffuse surrounding bulge.
M31
0.09±0.04
Although globular clusters generally appear spherical in form, ellipticities can occur due to tidal interactions.
Andromeda (M31) and satellites M32 and M110
Credit: NOAO/AURA/NSF
Our Local Group belongs to an even larger structure, a supercluster with the rich Virgo cluster of galaxies at its centre, about 70 million light years (about 21 Mpc) away.
cataloged as M31 and NGC 224, the closest large galaxy to the Milky Way and the only one visible to the naked eye in the Northern Hemisphere. It is also known as the Great Nebula in Andromeda. It is 2.
Slightly above M31 is M110. This is a spiral galaxy, looking like a smaller version of M31. It stretches more than 1/4 of a degree across and is slightly brighter than M32, at magnitude 8.
Andromeda Galaxy, M31
Galaxies
Infrared Astronomy
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Andromeda Galaxy (M31 or NGC 224)
M32
M110
Groombridge 34 (GX and GQ Andromedae)
Ross 248 (HH Andromedae)
Antlia (Antliae) ...
An optical view of M31 taken by the Digitized Sky Survey, while inset are before and after X-ray images by Chandra of the centre of the Andromeda Galaxy.
Galaxies were not recognized as a distinct kind of nebular object until the late 19th century, when visual spectroscopy (Huggins) of the Andromeda spiral (M31) showed a continuous spectrum.
The Milky Way and M31 are gravitationally bound, and currently approaching each other at high speed.
Normal galaxies such as our Milky Way galaxy or the Andromeda galaxy (M31) emit the combined radiation of some hundred billion stars as the bulk of their radiation.
This constellation is best known for the Andromeda Galaxy, M31, one of the most famous objects in the sky, ...
In 1917, Heber Curtis had observed the nova S Andromedae within the "Great Andromeda Nebula" (Messier object M31). Searching the photographic record, he found 11 more novae.
In 1924 Edwin Hubble detected Cepheids in the Andromeda nebula, M31 and the Triangulum nebula M33. Using these he determined that their distances were 900,000 and 850,000 light years respectively.
This contains around 70 galaxies with the big ones being our own Milky Way, the Andromeda Galaxy (M31), and the Triangulum Galaxy (M33).
The image to the right shows the Andromeda Galaxy (M31). It is the most massive of the local group of galaxies that includes our own Milky Way. This image is a mosaic of 10 GALEX images taken in September 2003.
Caltech_M31 M31, the Andromeda galaxy
INT 1. The nucleus of M31 in Andromeda (direct image)
INT 4. NGC 891, edge-on spiral galaxy in Andromeda.
Notable Features: Andromeda is famous for the Andromeda galaxy (M31) which is a large neighbouring galaxy of our own Milky Way, and, at 2.2 million light-years, is the most distant object visible to the naked eye.
Astronomers observed Cepheids in both the metal rich inner region of M31 (Andromeda) and its metal poor outer region. This work showed that the properties of Cepheids did not depend sensitively on chemical abundances.
The most celebrated object in the constellation is the great spiral galaxy M31, positioned on Andromeda's right hip, where it is visible as an elongated blur to the naked eye on clear nights. M31 is a whirlpool of stars similar to our own Milky Way.
It contains other galaxies, such as M31, LMC and SMC. Typically, a cluster of galaxies contains 1000 galaxies within a million parsecs. In a larger scale, clusters group together to form superclusters.
Conforme el cometa se mueve entre Casiopea y Pegaso, se acercará a M31, la galaxia espiral de Andrómeda. Se necesitarán un buen par de binoculares para distinguir M31, sin embargo el cometa Hale-Bopp debe ser fácil de distinguir a simple vista.
The Andromeda galaxy, M31, is a faint fuzzy patch that appears, with binoculars, as a lens shaped object. It is a galaxy rather like ours at a distance of about 2 million light years.
Discovered the Hubble classification of galaxies, using Cepheid variables in M31 and M33 calculated their distances, showed that galaxy distribution was cosmologically uniform, ...
ANDROMEDA GALAXY
The Andromeda Galaxy (also known as M31 and NGC 224) is the closest major galaxy. It is a spiral galaxy (like our galaxy) and is in the Local Group. It can just be seen with the naked eye in the constellation Andromeda.
Info: Andromeda contains the Andromeda Galaxy (M31/NGC224), which is the nearest spiral galaxy to our own galaxy and the largest object of the Local Group of galaxies.
Antlia (Air Pump) ...
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).
5 galaxy to a novice observer who is just getting used to the fact that M31 does not look as spectacular in his 4-inch as all the photos he has seen, chances are that he will not be able to see such a faint galaxy.
The galaxies which are gravitationally bound to the , including Fornax, the , M31 (Andromeda Galaxy), M32, M33, M101, Small Magellanic Cloud, and 9 dwarf spheroidal galaxies.
" If you take a look at the constellation of Andromeda during a particularly dark night, you might see a small patch of light that is designated M31 (see skytour - andromeda).
In contrast, the Andromeda galaxy, which is also known as M31 and as NGC 224, is much small on the sky, less than three degrees in length, which is larger than the Moon or the Sun.
4, the Andromeda Galaxy, also known as Messier 31, M31 or NGC 224, is one of the most distant objects visible to the naked eye. It is also the nearest spiral galaxy neighboring our own, the Milky Way.
The nearby Andromeda Galaxy, also called M31, is bright enough to be seen by the naked eye on dark, moonless nights. The Andromeda Galaxy is the only other (besides the Milky Way) spiral galaxy we can see with the naked eye.
Drive training should take care of it. (As an aside, in a 9mm eyepiece, M31 and M42 were dead-on, Saturn and Mars were about 5 minutes off). The drives do seem to run quieter and smoother, especially the RA drive.
The best fit to these data for clouds with masses between 105 and 2 x 106 Msun yields a constant of proportionality of 3.0 x 1020 H2 cm-2 (K km s-1)-1. The similarity of the clouds in other galaxies (M31, M33, and IC 10) to the Milky Way justifies ...
The Andromeda Galaxy (also known as M31) is a spiral galaxy very similar to our own Milky Way. It is slightly bigger. It has a disk filled with young population I stars and appears very blue, and a bulge filled with older reddish stars.
As in other clusters of galaxies, members are probably kept from separating by their mutual gravitational attraction. The Milky Way system is near one end of the volume of space occupied by the Local Group, and the great Andromeda galaxy (M31) is ...
The Milky Way is between the ``b'' and ``c'' groups with a bar, so it is an SBbc-type spiral galaxy. Most spirals are luminous. Some other examples of spiral galaxies are M31 (the Andromeda Galaxy) and M33 (a small spiral in the Local Group).
In 1780, the French astronomer Charles Messier (1730-1817) published a list that included 32 galaxies. These galaxies are now identified by their Messier (M) numbers; the Andromeda galaxy, for example, is known among astronomers as M31.
to be among the brightest and most striking gaseous nebulae, star clusters, and galaxies. Objects on Messier's list are still referred to by their "Messier number". For example the Andromeda Galaxy, the 31st object on the list, is known as M31.
M105 through M107 were observed by Messier's chief comet hunting rival, Pierre Mechain (1744-1804) and were added in 1947; M108 and M109 were mentioned by Messier in his description of M97 and were added in 1960; and M110 was on Messier's map of M31.
 See also: Galaxy, Andromeda, Galaxies, Light, Andromeda Galaxy
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