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Later observations (by Hubble himself, among others) showed Hubble's belief to be correct and the S0 class was included in the definitive exposition of the Hubble sequence by Allan Sandage. [12] Missing from the Hubble sequence are the early-type galaxies with intermediate-scale disks, in between the E0 and S0 types, Martha Liller denoted them ...
Tuning-fork-style diagram of the Hubble sequence Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance. There are several schemes in use by which galaxies can be classified according to their morphologies, the most famous being the Hubble sequence , devised by Edwin ...
NGC 1162 is a lenticular galaxy located in the constellation Perseus.It was discovered by astronomer William Herschel on October 14, 1784. The galaxy lies approximately 200 million light-years away from Earth and is classified as a type SA0^−^ galaxy, indicating a smooth structure with little to no spiral features.
NGC 1163 is classified as a barred spiral galaxy (SBc type) under the Hubble Sequence. The prominent bar structure at its center channels gas and dust toward the galaxy’s nucleus, fueling star formation. Its spiral arms are moderately tightly wound and exhibit regions of active star formation.
As one of the first steps towards a coherent theory of galaxy evolution, the American astronomer Edwin Hubble, developed a classification scheme of galaxies in 1926. Although this scheme, also known as the Hubble tuning fork diagram, is now considered somewhat too simple, the basic ideas still hold...
Visible light Hubble image (blue) showing newly formed young stars overlaid with a radio image from the Atacama Large Millimeter Array showing the clouds of dense cold gas from which new stars form (red, pink and yellow) Streams of stars and dust, resembling insect antennae, being ejected from both galaxies. The name Antennae Galaxies comes ...
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Tuning-fork-style diagram of the Hubble sequence. Spiral galaxies may consist of several distinct components: A flat, rotating disc of stars and interstellar matter of which spiral arms are prominent components; A central stellar bulge of mainly older stars, which resembles an elliptical galaxy; A bar-shaped distribution of stars