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Velocity dispersion of the cluster (as opposed to of only the core). redshift * z, if ≳ 0.1 : 0.8. z (km/s), if ≲ 0.1 : 0.0717 (21 500 km/s) distance NED's default value for the dimensionless Hubble parameter is 0.73 using the WMAP 3-year results, but one is able to change this to match the WMAP 5-year results with h=0.705.
NGC 288 is a globular cluster in the constellation Sculptor.Its visual appearance was described by John Dreyer in 1888. [7] It is located about 1.8° southeast of the galaxy NGC 253, 37′ north-northeast of the South Galactic Pole, 15′ south-southeast of a 9th magnitude star, and encompassed by a half-circular chain of stars that opens on its southwest side. [1]
The New General Catalogue of Nebulae and Clusters of Stars (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies , star clusters and emission nebulae .
These fields provide radial velocity values for the galaxy as a whole. The dimensionless quantity z is the redshift parameter and is used when the value is very small, such as less than 0.1. The h_radial_v gives the heliocentric radial velocity of the galaxy in units of km/s.
The astronomical catalogue is composed mainly of star clusters, nebulae, and galaxies. Other objects in the catalogue can be found in the other subpages of the list of NGC objects . The constellation information in these tables is from The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer , [ 1 ...
The following is a list of NGC objects, that is objects listed in the New General Catalogue (NGC). It is one of the largest comprehensive astronomical catalogues for deep sky objects such as star clusters, nebulae, and galaxies. List of NGC objects (1–1000) List of NGC objects (1001–2000) List of NGC objects (2001–3000)
NGC 225 is an open cluster in the constellation Cassiopeia. It is located roughly 2,200 light-years from Earth. It is about 100 to 150 million years old. [2] The binary fraction, or the fraction of stars that are multiple stars, is 0.52. [2]
Print/export Download as PDF; ... NGC 28 is an elliptical galaxy located in the Phoenix ... Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images This page ...