syzygy
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Reged: 10/06/05
Posts: 1530
Loc: Hungary
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Credit & Copyright: T. A. Rector (U. Alaska), T. Abbott, NOAO, AURA, NSF
What's happening in the NGC 3582 nebula? Bright stars and interesting molecules are forming. The complex nebula resides in the star forming region called RCW 57. Visible in this image are dense knots of dark interstellar dust, bright stars that have formed in the past few million years, fields of glowing hydrogen gas ionized by these stars, and great loops of gas expelled by dying stars. A recent detailed study of NGC 3582 uncovered at least 33 massive stars in the end stages of formation, and the clear presence of the complex carbon molecules known as polycyclic aromatic hydrocarbons (PAHs). PAHs are thought to be created in the cooling gas of star forming regions, and their development in the Sun's formation nebula five billion years ago may have been an important step in the development of life on Earth. This picture was taken last year with the Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory (CTIO), in Chile.
more: NASA - APOD
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Edited by syzygy (04/28/08 02:16 AM)
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syzygy
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Reged: 10/06/05
Posts: 1530
Loc: Hungary
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Credit & Copyright: Astro-Cooperation - Stefan Heutz/Wolfgang Ries
A familiar sight for northern hemisphere astronomers, the Ring Nebula (M57) is some 2,000 light-years away in the musical constellation Lyra. The central ring is about one light-year across, but this remarkably deep exposure - a collaborative effort combining data from two different telescopes - explores the looping filaments of glowing gas extending much farther from the nebula's central star. Of course, in this well-studied example of a planetary nebula, the glowing material does not come from planets. Instead, the gaseous shroud represents outer layers expelled from a dying, sun-like star. This composite image includes over 16 hours of narrow-band data intended to recorded the red emission from hydrogen atoms, but the pronounced blue/green color is due to emission from oxygen atoms at higher temperatures within the ring. The much more distant spiral galaxy IC 1296 is also visible at the upper right.
more from: NASA-APOD
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Edited by syzygy (09/18/08 04:38 AM)
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ChrisHeinz
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Reged: 12/17/07
Posts: 82
Loc: Lexington, KY
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Welcome back!
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syzygy
Master Cartographer
Reged: 10/06/05
Posts: 1530
Loc: Hungary
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hi Chris!
glad to hear from you!
always be sure i am on guard! so do as been a scout as a child...  (hungarian scout greeting: Be on guard!)
i keep watcing my source pages and put up one as find one worths to.
(sorry, still cannot understand those "superoverlay" things. i fit the images manual all cases. hope these are not so bad, and still represent some additional value on GE.)
cu,
g
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Edited by syzygy (09/20/08 03:42 AM)
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