Area next to active star-forming region is empty
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From: Sam Wormley on 11 May 2010 19:31 ScienceShot: A Hole in Space Area next to active star-forming region is empty http://news.sciencemag.org/sciencenow/2010/05/scienceshot-a-hole-in-space.html?etoc
From: john on 12 May 2010 09:27 On May 11, 5:31 pm, Sam Wormley <sworml...(a)gmail.com> wrote: > ScienceShot: A Hole in Space > Area next to active star-forming region is empty > > http://news.sciencemag.org/sciencenow/2010/05/scienceshot-a-hole-in-s... Here's a quote from this blurb: "When new stars formparticularly the massive varietytheir energetic solar winds eventually blow away the leftover gas and dust that surrounds them, like a newborn chick hacking its way out of an egg. And so many young and massive stars inhabit NGC 1999 that their collective solar winds may have blasted the adjacent area clean as a whistle" And here's your question, Sam: Why are these new stars forming? What are they forming from? john
From: Sam Wormley on 12 May 2010 11:22 On 5/12/10 8:27 AM, john wrote: > On May 11, 5:31 pm, Sam Wormley<sworml...(a)gmail.com> wrote: >> ScienceShot: A Hole in Space >> Area next to active star-forming region is empty >> >> http://news.sciencemag.org/sciencenow/2010/05/scienceshot-a-hole-in-s... > > Here's a quote from this blurb: > "When new stars form�particularly the massive variety�their energetic > solar winds eventually blow away the leftover gas and dust that > surrounds them, like a newborn chick hacking its way out of an egg. > And so many young and massive stars inhabit NGC 1999 that their > collective solar winds may have blasted the adjacent area clean as a > whistle" > > And here's your question, Sam: > Why are these new stars forming? The Jeans instability causes the collapse of interstellar gas clouds and subsequent star formation. It occurs when the internal gas pressure is not strong enough to prevent gravitational collapse of a region filled with matter. See: http://en.wikipedia.org/wiki/Jeans_instability > What are they forming from? Interstellar gas clouds--The majority of galactic mass (not counting Dark Matter) is in the dorm of interstellar gas clouds. > > john
From: TBerk on 13 May 2010 01:54
On May 12, 8:22 am, Sam Wormley <sworml...(a)gmail.com> wrote: > Interstellar gas clouds--The majority of galactic mass (not counting > Dark Matter) is in the (f)orm of interstellar gas clouds. > > Where are the Bussard Ramjets?, we were supposed to have them by now... (a riff on the 'where are the flying cars' meme). berk |