30 Doradus


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30 Doradus

(dŏ-ray -dŭs, -rah -) (Tarantula nebula; NGC 2070) A very extensive very luminous emission nebula in the Large Magellanic Cloud (LMC) that is a grouping of H II regions characterized by rapid complex motions. It is the brightest object (absolute magnitude –19) in the LMC and is visible to the naked eye. It is also the strongest radio source in the LMC. The most luminous object in the nebula, both at optical and ultraviolet wavelengths, lies near the center and is called R136. It is surrounded by dozens of fainter yet still very bright stars. R136 has at least three components, designated a, b, and c. R136a, the brightest component, is an intense UV source with a powerful stellar wind. Observations with the Hubble Space Telescope have shown that R136a is an extremely dense cluster of at least 12 massive young O stars within a region only 0.25 parsecs across.

30 Doradus

[¦thər·dē də′rä·dəs]
(astronomy)
References in periodicals archive ?
The entire 30 Doradus complex has been an active star-forming region for 25 million years, and it is currently unknown how much longer this region can continue creating new stars.
Stars are supposed to form in clusters, but there are many young stars outside 30 Doradus that could not have formed where they are; they may have been ejected at very high velocity from 30 Doradus itself," Sabbi said.
In recognition of Hubble's 22nd birthday, the new image of the 30 Doradus region, the birth place for new stars, is more than a fitting anniversary image.
No known star-forming region in our galaxy is as large or as prolific as 30 Doradus.
30 Doradus 016 is a refugee from the 30 Doradus star-forming region in the Large Magellanic Cloud, a satellite galaxy of the Milky Way.
That finding inspired Chris Evans, an astronomer at the Royal Observatory Edinburgh in Scotland, to sift through observations of 30 Doradus 016 previously taken with a spectrograph on the Very Large Telescope in Chile.
R144 is the visually brightest light source of this type in the star-forming region 30 Doradus and radiates strongly in X-rays.
The fact that R144 lies far out from the central star cluster in 30 Doradus is possibly an indication that these systems can form in isolation," he added.
30 Doradus is the brightest star-forming region in our galactic neighborhood and home to the most massive stars ever seen.
More stars form in the 30 Doradus "star factory" than in any similar location in the Milky Way.
But Fermi shows that the LMC's brightest diffuse emission remains close to 30 Doradus and doesn't extend across the galaxy.
30 Doradus is about 160,000 light years from Earth in the southern constellation of Dorado.