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Bright Nebulae in M33
<< Yesterday 17.10.2009 Tomorrow >>
Bright Nebulae in M33
Credit & Copyright: Ken Crawford (Rancho Del Sol Observatory)
Explanation: Gorgeous spiral galaxy M33 seems to have more than its fair share of bright emission nebulae. In fact, narrow-band and broad-band image data are combined in this beautifully detailed composite to trace the reddish emission nebulae, star forming HII regions, sprawling along loose spiral arms that 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 gas and ultimately produces the characteristic red glow. Spanning over 50,000 light-years and a prominent member of the local group of galaxies, M33 is also known as the Triangulum Galaxy. It 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.

Russkii tekst
Based on Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: emission nebula - star formation - galaktika v Treugol'nike - Oblasti zvezdoobrazovaniya - oblasti HII - oblasti ionizovannogo vodoroda
Publikacii so slovami: emission nebula - star formation - galaktika v Treugol'nike - Oblasti zvezdoobrazovaniya - oblasti HII - oblasti ionizovannogo vodoroda
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