E2/M1 mixing in the Jπ= 5/2+ to 3/2+ transition in 21Na and its relation to the 20Ne(p,y ) stellar reaction rate
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Date
2022
Authors
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Journal ISSN
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Publisher
University of the Western Cape
Abstract
In the above, M is the total mass of the molecular cloud, R is its radius, k is Boltzmann's constant, G is
the gravitational constant, T is the cloud temperature, m is the mean molecular weight, and is the cloud
molecular density. Interstellar clouds typically have densities of about 100 atoms cm3 and T ' 100 K. The
Jeans criterion is only met when the mass of the cloud is greater than 2 104 M [5] (where M denotes
one solar mass).
The genesis of stars is initiated through such condensation of gas clouds in interstellar space. The gravitational
collapse to a high central density results in the formation of a protostar. The internal heat that is
generated is radiated away from the center, which is relatively hotter than the surface.
Description
>Magister Scientiae - MSc
Keywords
Physics, Astronomy, Energy, Thermal energy