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Luminous infrared galaxies or LIRGs are galaxies with luminosities, the measurement of brightness, above 1011L☉. They are also referred to as submillimeter galaxies (SMGs) through their normal method of detection. LIRGs are more abundant than starburst galaxies, Seyfert galaxies and quasi-stellar objects at comparable luminosity.[citation needed] Infrared galaxies emit more energy in the infrared than at all other wavelengths combined.[1] A LIRG's luminosity is 100 billion times that of the Sun.
Galaxies with luminosities above 1012L☉ are ultraluminous infrared galaxies (ULIRGs). Galaxies exceeding 1013L☉ are characterised as hyper-luminous infrared galaxies (HyLIRGs). Those exceeding 1014L☉ are extremely luminous infrared galaxies (ELIRGs). Many of the LIRGs and ULIRGs are showing interactions and disruptions. Many of these types of galaxies spawn about 100 new stars a year as compared to the Milky Way which spawns one a year; this helps create the high level of luminosity.
^Sanders, D. B.; Mirabel, I. F. (1996) [September 1996]. "LUMINOUS INFRARED GALAXIES". Annual Review of Astronomy and Astrophysics. 34 (1): 1. doi:10.1146/annurev.astro.34.1.749. ISSN 0066-4146.
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Luminousinfraredgalaxies or LIRGs are galaxies with luminosities, the measurement of brightness, above 1011 L☉. They are also referred to as submillimeter...
Approximately one-third of nearby galaxies are classified as containing LINER nuclei. Luminousinfraredgalaxies (LIRGs) are galaxies with luminosities—the measurement...
source in mid infrared. The whole galaxy shines bright in infrared and it is characterised as a luminousinfraredgalaxy, with a total infrared luminosity...
formation would have been very high, to the point of becoming a luminousinfraredgalaxy for roughly 100 million years. Modeling also recovers the bulge...
a light curve that fades slowly with resurgent brightness in the infrared. Luminous red novae are not related to standard novae, which are explosions...
also known as the Starfish Galaxy, is a nearby ultraluminous infraredgalaxy (ULIRG) in the constellation Ophiuchus. The galaxy is the remnant of a merger...
ultraluminous infraredgalaxy (ULIRG) to Earth, at 250 million light years away. Its energy output was discovered by IRAS to be dominated by the far-infrared part...
compact galaxies resembling primordial starbursts. They were found by citizen scientists taking part in the Galaxy Zoo project. Luminousinfraredgalaxies (LIRGs)...
The galaxy has been categorised as a luminousinfraredgalaxy, a category of galaxies associated with high star formation rate. The total infrared luminosity...
with spiral arms that are moderately tightly wound (b). It is a luminousinfraredgalaxy with star-forming clumps. In 1958, supernova SN 1955C was discovered...
1784. NGC 7469 is a type I Seyfert galaxy, characterised by its bright nucleus. It is also a luminousinfrared source with a powerful starburst embedded...
class of SAa, suggesting tightly wound arms. However, infrared images of the inner part of the galaxy reveal a prominent bar not seen in visual light, and...
bright in the infrared. The total infrared luminosity of NGC 985 is 1.8×1011 L☉ and it is characterised as a luminousinfraredgalaxy. The total molecular...
infrared luminosity of the galaxy is 1011.03 L☉, and thus it is categorised as a luminousinfraredgalaxy. NGC 6907 is a grand design spiral galaxy with...
50″ × 40″. This second bar is more prominent in infrared images of the central region of the galaxy, and likely arises from a combination of dynamical...
Interacting galaxies (colliding galaxies) are galaxies whose gravitational fields result in a disturbance of one another. An example of a minor interaction...
than 100 solar masses per year. It is one of the most ultraluminous infraredgalaxies with power derived from an accreting black hole in the center and...
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