M100, a typical spiral galaxy
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M100 is one of the brightest members of the Virgo cluster of galaxies. It is located in the constellation of Coma Berenices and is a beautiful example of a nearly face-on spiral galaxy.
M100 = NGC4321 ( 12h 22.9m +15°49´, 9.4 mag. )
This beautifully symmetrical face-on spiral galaxy in Coma Berenices was discovered by Mechain in 1781 and Messier saw it on April 13 same year.
M100 -- Messier Catalog entry number 100 is a spiral galaxy in the Virgo cluster seen face-on from our solar system.
Major axis -- The maximum diameter of an ellipse.
Mars -- Fourth planet from the sun, a terrestrial planet.
M100 has clearly defined spiral arms and a well organised spiral structure.
Credit: AAO/David Malin ...
M100 is a spiral galaxy seen face-on. At 7 arcminutes across, it has the largest apparent size of any galaxy in the Virgo cluster. It is of magnitude 9.4m and is around 56 million light-years away.
M100 is the largest of these spiral galaxies, although difficult to appreciate in small telescopes. It's seen face-on, and has a brightness of 9.4.
The spiral galaxy M100, a galaxy similar to our own. (© David Malin, Anglo Australian Observatory).
Cepheid in galaxy M100 observed with HST
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Galaxy at z = 6 observed with Gemini 8.1 m telescope ...
But some stars have been observed in the M100 galaxy of the Virgo Cluster, about 100 million light years from the Earth.
The best-known report of this work was for NGC 4321=M100 in Virgo by Ferrarese et al (1996 ApJ 464, 568), see also Freedman et al 1994 (Nature 371, 757).
A good example of Hubble's scientific capabilities today can be seen by comparing the two images of the spiral galaxy M100, shown here.
En este ejercicio medimos el periodo y magnitudes aparentes de las variables cefeidas en la galaxia M100.
This composite image shows a supernova within the galaxy M100 that may contain the youngest known black hole in our cosmic neighborhood.
This is the home of M100, otherwise known as NGC 4321. It is a round galaxy, at magnitude 9.4, it is nearly twice as bright as our last object, NGC 4450.
The Virgo cluster is a massive cluster of over 100 galaxies (including M61, M87, M90, and M100) and a lot of very hot, X-ray emitting gas. This cluster is located mostly within the constellation Virgo.
Related images (other sources)
AAT 58. NGC 4321, M100 in Coma Berenices
AAT 59. Dwarf galaxies around NGC 4321 (M100) in Coma Berenices ...
Figure: A Hubble Space Telescope image of the heart of the spiral galaxy M100 in the Virgo Cluster of galaxies. Note the large spiral arm features outlined by dust lanes bordered by regions of hot stars and gas indicating active star formation.
M53 (globular cluster)
M64 The Blackeye Galaxy (spiral galaxy)
M85 (elliptical galaxy)
M88 (spiral galaxy)
M91 (spiral galaxy)
M98 (spiral galaxy)
M99 (spiral galaxy)
M100 (spiral galaxy) ...
Messier Object 100 - M100
Messier Object 101 - M101
Messier Object 102 - M102
Messier Object 103 - M103
Messier Object 104 - M104
Messier Object 105 - M105
Messier Object 106 - M106
Messier Object 107 - M107
Messier Object 108 - M108 ...
 See also: Galaxy, Galaxies, Telescope, Cluster, Star
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