Stellar embryos

Jan 23, 2012
Stellar embryos
An infrared image of a cluster of new stars forming in a dark filament of gas and dust in Cygnus. The first detailed observations of one very young, prestellar core in a similar cluster find that stellar development in a clustered environment significantly differs from the isolated case. Credit: NASA; Spitzer

(PhysOrg.com) -- Stars form as gravity coalesces the gas and dust in interstellar clouds until the material produces clumps dense enough to become stars. But precisely how this happens, and whether or not the processes are the same for all stars, remains very uncertain. Astronomers have been studying very young clumps, called "pre-stellar cores" located deep within stellar wombs, in an attempt to sort out these details. But precisely because the cores have no stars in them yet, or at best only very young stars, they are faint and difficult to observe.

CfA astronomers Tyler Bourke, Phil Myers, and David Wilner, along with three colleagues, used the to do the first detailed observational study of the internal structure of a pre-stellar core. Astronomers have come to realize that birth clouds are most often filamentary in shape, not spherical, and so the team examined a suspected embryo embedded within an (even colder) filamentary cloud. They selected a filament that is relatively close by, only about 400 light-years distant, and that was known to contain within it a string of warm spots that might be stellar embryos.

The scientists probed one of these spots using the millimeter wavelength emission from its dust and from two simple, nitrogen-bearing molecules that are known to trace the expected around a pre-stellar core. The team's results include the first high spatial resolution observations of such a young core. They conclude that the material is apparently collapsing, and that the object's mass is about 0.29 solar-masses (that is, it would make a star smaller than the sun). The core currently extends over about 1000 astronomical units (in the solar system this dimension reaches to the inner zone where comets reside). Overall the new results are notably different from the predictions of simple theory, suggesting that this core has been significantly influenced by fragmentation of the filament and by the presence of other cores in the cluster.

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HannesAlfven
1.1 / 5 (7) Jan 23, 2012
There is a little-known process from the plasma laboratory called Marklund convection which can also explain these observations. But, don't expect theorists anytime soon to question their assumptions about magnetohydrodynamics. It has for many decades now been in vogue to pretend that cosmic plasmas behave essentially as gases. Magnetic reconnection experiments all have an ON/OFF switch. Plasma's VI curve demonstrates that the resistance *never* hits zero. Thus, E-fields *are* possible in space.

Willful ignorance of competing inferences comes with a heavy price: Genius in science does not occur in the absence of ideational fluency. Genius is also a function of a person's *breadth* of knowledge. Thus, every scientist today must make a choice: Investigate unconventional inferences and have a chance at discovering something new, or focus only upon the "acceptable" inferences, and remain a scientific pundit.

Most seem to be choosing pundit these days.
TimESimmons
1 / 5 (7) Jan 24, 2012
A cloud of gas in a vacuum. That is strange don't you think? Here's the explanation:-

http://www.presto...ndex.htm
MarkyMark
5 / 5 (3) Jan 24, 2012
A cloud of gas in a vacuum. That is strange don't you think? Here's the explanation:-

http://www.presto...ndex.htm

Are you perhaps related to Oliver?
TimESimmons
2.6 / 5 (5) Jan 24, 2012
No Marky I'm not
MarkyMark
5 / 5 (1) Jan 26, 2012
No Marky I'm not

I gave you a five for this as i do agree that you are not a Pervert, nor do you spam this site with YOUR dubiouse theory. Unlike Oliver.
sandler
1 / 5 (3) Jan 26, 2012
Not all stars are created equal. One other way (outside gravity) you could go from nitrogen gas to clamp core is described in this video http://www.youtub...TUuJZAFs As this chemical reaction gets momentum more and more gas will be converted to liquid. The liquid can easier form round core which results in formation of rotational axis and magnetic poles. The nitrogen surrounding the core is perfect insulator, but liquid within it is a perfect conductor, which makes this structure in to electrical battery of sorts. Eventually this causes cold fusion reaction which overtime warms up the core and creates fusion reaction like the one powering our sun.

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