Path: csiph.com!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: jimp@specsol.spam.sux.com Newsgroups: sci.physics Subject: Re: Close-up view of galaxies prompts re-think on star formation Date: Tue, 10 Nov 2015 18:30:34 -0000 Organization: A noiseless patient Spider Lines: 31 Sender: Jim Pennino Message-ID: References: Injection-Info: mx02.eternal-september.org; posting-host="db4120ef82bbc153014637d4cd15a795"; logging-data="24343"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19oLw2msLrjm8QD7sbpHz3+" User-Agent: tin/2.2.1-20140504 ("Tober an Righ") (UNIX) (SunOS/5.10 (i86pc)) Cancel-Lock: sha1:ITyFDaiNOySd3IAAcB5TJEPslQw= Xref: csiph.com sci.physics:531831 Sam Wormley wrote: > Close-up view of galaxies prompts re-think on star formation >> http://phys.org/news/2015-11-close-up-view-galaxies-prompts-re-think.html > > >> Atomic gas is composed of individual hydrogen atoms. It is usually >> found in regions of space that do not contain any planets or stars >> and are largely empty, researchers say. >> >> Molecular gas is made up of pairs of hydrogen atoms bound together, >> and is present in the densest parts of galaxies, where most planets >> and stars form. >> >> The new study, led by the University of Edinburgh, provides the first >> evidence that atomic gas can fuel star formation. This happens when >> atomic gas flows into galaxies but does not have time to convert to >> the molecular form, the team says. >> >> The discovery was made by studying galaxies in which explosions of >> massive stars - known as gamma-ray bursts - have been observed. It >> was thought the stars formed from molecular gas, but recent studies >> have shown these galaxies to be almost entirely deficient in >> molecular gas. Yet more "settled science" unsettled. -- Jim Pennino