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The giant elliptical galaxy ESO 325-4. An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image. They are one of the three main classes of galaxy described by Edwin Hubble in his Hubble sequence and 1936 work The Realm of the Nebulae, [1] along with spiral and lenticular galaxies.
NGC 1700 is an elliptical that formed after the merger of at least two galaxies. [4] The galaxy has boxy isophotes and has two broad tidal tails or plumes extending towards the north-west and south-east of the galaxy for about 165 arcseconds, which corresponds to 41,000 parsecs (130,000 ly) at the distance of the galaxy.
PGC 1470080 is a type E [1] elliptical galaxy located in the Boötes constellation. [2] It is located 3 billion light-years away from the Solar System and has a diameter of 571,000 light-years, [3] making it a type-cD galaxy and one of the largest.
NGC 6505 is an elliptical galaxy with Hubble sequence classification E/S0 in the northern celestial hemisphere constellation Draco. It is about 608 million light years away from the Milky Way galaxy and has a diameter of about 190,000 light years. It was discovered on June 27, 1884 by Lewis A. Swift. [4]
Many characteristics of a galaxy are correlated. For example, as one would expect, a galaxy with a higher luminosity has a larger effective radius. The usefulness of these correlations is when a characteristic that can be determined without prior knowledge of the galaxy's distance (such as central velocity dispersion – the Doppler width of spectral lines in the central parts of the galaxy ...
NGC 4564 is an elliptical galaxy located about 57 million light-years away [2] in the constellation Virgo. [3] NGC 4564 was discovered by astronomer William Herschel on March 15, 1784. [4] The galaxy is also a member of the Virgo Cluster. [5] [6] NGC 4564 has an estimated population of 213 ± 31 globular clusters. [7]
NGC 1427 is a low-luminosity elliptical galaxy [5] located approximately 71 million light-years away from Earth. [2] It was discovered by John Frederick William Herschel on November 28, 1837. [6] It is a member of the Fornax Cluster. [7] [8] The galaxy has a stellar mass of 7.9 × 10 10 M ☉, and a total mass of 9.4 × 10 10 M ☉. [4]
This is an elliptical galaxy of type E5 [7] with a position angle of 163.3°, [8] indicating the overall shape shows a flattening of 50%. [12] However, isophotes for this galaxy deviate from a perfect ellipticity, showing pointed shapes instead. These can be decomposed mathematically into a three component model, with each part having a ...