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Hydrogen in the LMC
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Hydrogen in the LMC
Credit & Copyright: Marco Lorenzi (Star Echoes)
Explanation: A satellite galaxy of our own Milky Way, the Large Magellanic Cloud (LMC) is an alluring sight in dark southern skies and the constellation Dorado. A mere 180,000 light-years distant, the LMC is seen in amazing detail in this very deep 4 frame mosaic of telescopic images, a view that reveals the Milky Way's satellite to have the appearance of a fledgling barred spiral galaxy. The mosaic includes image data taken through a narrow filter that transmits only the red light of hydrogen atoms. Ionized by energetic starlight, a hydrogen atom emits the characteristic red H-alpha light as its single electron is recaptured and transitions to lower energy states. As a result, this mosaic seems spattered with pinkish clouds of hydrogen gas surrounding massive, young stars. Sculpted by the strong stellar winds and ultraviolet radiation, the glowing hydrogen clouds are known as H II (ionized hydrogen) regions. Composed of many overlapping clouds, the sprawling Tarantula Nebula left of center, is by far the LMC's largest star forming region. The Large Magellanic Cloud is about 15,000 light-years across.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Russkii tekst
Based on Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: LMC - Large Magellanic Cloud - H-alpha - HII region - star formation - Bol'shoe Magellanovo Oblako - BMO - oblasti ionizovannogo vodoroda - Oblasti zvezdoobrazovaniya
Publikacii so slovami: LMC - Large Magellanic Cloud - H-alpha - HII region - star formation - Bol'shoe Magellanovo Oblako - BMO - oblasti ionizovannogo vodoroda - Oblasti zvezdoobrazovaniya
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