Explanation: Gorgeous spiral galaxy M33 seems to have more than its fair share of hydrogen. Its inner 30,000 light-years are shown here in an image processed to fully reveal the reddish glow of ionized hydrogen regions (HII regions) sprawling along loose spiral arms as they wind toward the galaxy's core. Historically of great interest to astronomers, M33's giant HII regions are some of the largest known stellar nurseries - sites of the formation of short-lived but very massive stars. Intense ultraviolet radiation from the luminous, massive stars ionizes the surrounding hydrogen gas and ultimately produces the characteristic red glow. A prominent member of the local group of galaxies, M33 is also known as the Triangulum Galaxy and lies about 3 million light-years distant.

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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.

Publikacii s klyuchevymi slovami: H-alpha - hydrogen - oblasti ionizovannogo vodoroda - Oblasti zvezdoobrazovaniya - oblasti HII Publikacii so slovami: H-alpha - hydrogen - oblasti ionizovannogo vodoroda - Oblasti zvezdoobrazovaniya - oblasti HII
Sm. takzhe: IC 1795: tumannost' Ryb'ya golova Oblaka vodoroda v M33 Zvezdnaya fabrika Mess'e 17 Shirokoe pole s ρ Zmeenosca Oblaka v BMO Oblaka Andromedy HI4PI: vodorodnoe nebo Vse publikacii na tu zhe temu >>