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View Full Version : Spitzer Sees Huge Clouds of Dust Around M82



Fraser
2006-Mar-17, 03:32 AM
SUMMARY: NASA's Spitzer Space Telescope has revealed a burning hot galaxy blowing out clouds of dust and smoke. The galaxy is M82, and it's well known for vast regions of young, hot stars in stellar nurseries. In visible light, the galaxy looks fairly normal, but in Spitzer's infrared view, it's nestled inside an enormous cloud of dust. These clouds are the largest ever seen around a galaxy, stretching 20,000 light years from the galactic plane in both directions.

View full article (http://www.universetoday.com/am/publish/smoky_cigar_galaxy.html)
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antoniseb
2006-Mar-17, 01:51 PM
I remember growing up that galaxies were categorized as spirals, barred spirals, ellipticals, and irregulars, and M82 was the poster child for irregular. I like seeing the images that show it to be a nearly edge-on spiral with a lot of dust being blown out the top and bottom. M82 is not an irregular galaxy, it has just been recently activated as a star-forming galaxy by its interaction with M81.

Eric Vaxxine
2006-Mar-17, 03:43 PM
20,000 light years .... that's....wide ! Wow, I would love to be able to travel to places like that.

Jerry
2006-Mar-17, 05:14 PM
"Spitzer showed us a dust halo all around this galaxy," said Engelbracht. "We still don't understand why the dust is all over the place and not cone-shaped."

Interesting. Maybe it really is a cigar.

antoniseb
2006-Mar-17, 06:42 PM
Interesting. Maybe it really is a cigar.
It always looked more like an Edgerton photo of a novelty exploding cigar.

davimill
2006-Mar-18, 07:50 PM
SUMMARY: NASA's Spitzer Space Telescope has revealed a burning hot galaxy blowing out clouds of dust and smoke. The galaxy is M82, and it's well known for vast regions of young, hot stars in stellar nurseries. In visible light, the galaxy looks fairly normal, but in Spitzer's infrared view, it's nestled inside an enormous cloud of dust. These clouds are the largest ever seen around a galaxy, stretching 20,000 light years from the galactic plane in both directions.

View full article (http://www.universetoday.com/am/publish/smoky_cigar_galaxy.html)
What do you think about this story? post your comments below.

I've been trying to learn more about the existence of hydrocarbons in space. There are many instances of lower molecular weight hydrocarbons being found, the most recent being methane and some slightly heavier compounds on Titan. And, on the gas giant planets as well as floating free in space. But, polycylic (aromatic organic compounds, etc.) molecules are of relatively high molecular weight and are therefore more highly "developed". How are these compunds formed in the first place? Anyone know? How about Internet references?

trinitree88
2006-Mar-19, 10:37 PM
I've been trying to learn more about the existence of hydrocarbons in space. There are many instances of lower molecular weight hydrocarbons being found, the most recent being methane and some slightly heavier compounds on Titan. And, on the gas giant planets as well as floating free in space. But, polycylic (aromatic organic compounds, etc.) molecules are of relatively high molecular weight and are therefore more highly "developed". How are these compunds formed in the first place? Anyone know? How about Internet references?


Welcome to BAUT Davimill. The progress in mapping complex compounds in space has been huge in the last twenty years. Try these:
1. http://www.sciencenews.org/articles/20040501/bob9ref.asp

2. http:www.shantanurastogi.homestead.com/files/ismol.html

3. http://isc.astro.cornell.edu/~sloan/research/ngc1333.html

and...surprising, always give a whirl on Google with your request. For very technical...go to NASA Astrophysics database...search References...Astrononmy & Astrophysics...plug in your text word of choice...you'll be buried with data. :dance: Pete