Members
Some interesting members of Abell’s catalog include:
- A426, the Perseus Cluster
- A1367, the Leo Cluster
- A1656, the Coma Cluster
- A2151, the Hercules Cluster
- A3526, the Centaurus Cluster
About 10% of Abell clusters at redshift z < 0.1 are not genuine rich clusters but, rather, the result of the superposition of sparser groupings. Interestingly, the extremely large and extremely rich Virgo Cluster was excluded from the Abell catalog because it covered too large an area of the sky to appear on a single photographic plate.
Read more about this topic: Abell Catalogue
Famous quotes containing the word members:
“The state of society is one in which the members have suffered amputation from the trunk, and strut about so many walking monsters,—a good finger, a neck, a stomach, an elbow, but never a man.”
—Ralph Waldo Emerson (1803–1882)
“Jesus, Buddha, Mahommed, great as each may be, their highest comfort given to the sorrowful is a cordial introduction into another’s woe. Sorrow’s the great community in which all men born of woman are members at one time or another.”
—Sean O’Casey (1884–1964)
“...wasting the energies of the race by neglecting to develop the intelligence of the members to whom its most precious resources must be entrusted, already seems a childish absurdity.”
—Anna Eugenia Morgan (1845–1909)