Galaxies And Their Properties
19 entries in the Galaxies And Their Properties compendium.
BL Lacertae objectActive galactic nuclei with rapid variability and featureless spectra.Brightest cluster galaxyThe most massive galaxies, found at cluster centers.Dark galaxyHypothesized galaxies made of dark matter, with no visible stars.Dark matter haloHypothetical region of gravitationally bound dark matter enveloping galaxies.Dwarf elliptical galaxySmall elliptical galaxies common in groups and clusters.Field galaxyA galaxy gravitationally alone, not in a group or cluster.Galactic haloExtended spherical component of a galaxy beyond its visible parts.Galactic tideTidal force from a galaxy's gravitational field.Grand design spiral galaxySpiral galaxy with prominent, well-defined continuous arms.Hubble sequenceA morphological galaxy classification scheme published by Edwin Hubble in 1926.Interacting galaxyGalaxies whose gravity disturbs one another.Low surface brightness galaxyDiffuse galaxies dominated by dark matter, with faint stellar disks.Luminous infrared galaxyGalaxies that outshine the Sun by 100 billion times in infrared.Magellanic spiralDwarf spiral galaxies with a single prominent arm, often complex.Peculiar galaxyGalaxies of unusual size, shape, or composition.Ring galaxyA galaxy with a ring-shaped structure of stars and gas.Satellite galaxySmaller galaxies bound to larger hosts, key to cosmology.Type-cD galaxySupergiant elliptical galaxies at the centres of rich clusters.Unbarred spiral galaxyA spiral galaxy without a central bar structure.
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