Definitions for irregular galaxy
ir·reg·u·lar gal·axy

WiktionaryRate this definition:0.0 / 0 votes

1. irregular galaxynoun

   A galaxy which is has no spirals and is not elliptical.

WikipediaRate this definition:0.0 / 0 votes

1. Irregular galaxy

   An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy. Irregular galaxies do not fall into any of the regular classes of the Hubble sequence, and they are often chaotic in appearance, with neither a nuclear bulge nor any trace of spiral arm structure.Collectively they are thought to make up about a quarter of all galaxies. Some irregular galaxies were once spiral or elliptical galaxies but were deformed by an uneven external gravitational force. Irregular galaxies may contain abundant amounts of gas and dust. This is not necessarily true for dwarf irregulars.Irregular galaxies are commonly small, about one tenth the mass of the Milky Way galaxy. Due to their small sizes, they are prone to environmental effects like crashing with large galaxies and intergalactic clouds.

WikidataRate this definition:5.0 / 1 vote

1. Irregular galaxy

   An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy. The shape of an irregular galaxy is uncommon – they do not fall into any of the regular classes of the Hubble sequence, and they are often chaotic in appearance, with neither a nuclear bulge nor any trace of spiral arm structure. Collectively they are thought to make up about a quarter of all galaxies. Most irregular galaxies were once spiral or elliptical galaxies but were deformed by disorders in gravitational pull. Irregular galaxies may contain abundant amounts of gas and dust. This is not necessarily true for Dwarf Irregulars. There are two major Hubble types of irregular galaxies: ⁕An Irr-I galaxy is an irregular galaxy that features some structure but not enough to place it cleanly into the Hubble sequence. De Vaucouleurs subtypes this into galaxies that have some spiral structure Sm, and those that do not Im. ⁕An Irr-II galaxy is an irregular galaxy that does not appear to feature any structure that can place it into the Hubble sequence. A third classification of irregular galaxies are the dwarf irregulars, labelled as dI or dIrrs. This type of galaxy is now thought to be important to understand the overall evolution of galaxies, as they tend to have a low level of metallicity and relatively high levels of gas, and are thought to be similar to the earliest galaxies that populated the Universe. They may represent a local version of the faint blue galaxies known to exist in deep field galaxy surveys.

How to pronounce irregular galaxy?

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How to say irregular galaxy in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of irregular galaxy in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of irregular galaxy in Pythagorean Numerology is: 8

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Irregular_Galaxy
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Irregular_Galaxy
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=irregular galaxy