irregular galaxy


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irregular galaxy

See galaxies; Hubble classification.

irregular galaxy

[i′reg·yə·lər ′gal·ik·sē]
(astronomy)
A galaxy which shows no definite order or shape, except that of a general flattened appearance.
References in periodicals archive ?
A member of the IC 342/Maffei Group of galaxies, NGC 1569 is classified as a Magellanic irregular galaxy due to its distorted shape.
com/hubble-spies-ngc-4861-distant-wolf-rayet-galaxy-defies-classification-2483118) an image of NGC 4861 - a galaxy whose mass, size and rotational velocity resemble those of a spiral galaxy, while its diffuse appearance makes it look like a dwarf irregular galaxy.
Nearly 30 million light-years from Earth, in the direction of the constellation Virgo, lies an irregular galaxy named IC 3583.
It's classified as a peculiar irregular galaxy and owes its brightness to areas of furious star formation.
The photograph also shows a dim, irregular galaxy named SDSS J134646.
Strange little IC 3476 has been assigned a morphological type of IB(s)m--a barred, Magellanictype irregular galaxy with traces of spiral structure.
It's a dwarf irregular galaxy and is heavily obscured because we see it through the dusty plane of our galaxy.
Now drop 1 1/2 [degrees] south-southwest to the irregular galaxy NGC 4214.
NGC 4449 is a Magellanic irregular galaxy, noted for multiple extended regions of star formation.
If we look at the image of the irregular galaxy M82 on page 96, the star at upper left serves to bring our eyes back to the beginning since we're always attracted to a bright point source.
Another naked-eye showpiece is the Large Magellanic Cloud (LMC), a nearby irregular galaxy that spans about 50,000 light-years across.