Publication Abstracts

Perri and Cameron 1973

Perri, F., and A.G.W. Cameron, 1973: Hydrogen flash in stars. Nature, 242, 395-396, doi:10.1038/242395a0.

During the past few years there has been some progress in understanding the way in which a star approaches the main sequence. In their studies of the pre-main sequence evolution of stars, Ezer and Cameron assumed that the stellar material started with the highest possible adiabat consistent with the virial theorem (for a given temperature a high adiabat has a low density and a low adiabat has a high density). In later hydrodynamic collapse studies of the formation of a star with zero angular momentum, Hayashi and Larson showed that much of the internal energy of the collapsing gas is radiated away, so that the stellar material must start on a much lower adiabat. The gas in the centre of such an object can only be heated by compression, so that it remains on a low adiabat. As the outer layers of the star fall onto this core, they undergo shock heating, due to gravitational potential energy release, which raises their adiabat, and allows the star to form a stable body in hydrostatic equilibrium prior to reaching the main sequence.

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BibTeX Citation

@article{pe06200v,
  author={Perri, F. and Cameron, A. G. W.},
  title={Hydrogen flash in stars},
  year={1973},
  journal={Nature},
  volume={242},
  pages={395--396},
  doi={10.1038/242395a0},
}

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RIS Citation

TY  - JOUR
ID  - pe06200v
AU  - Perri, F.
AU  - Cameron, A. G. W.
PY  - 1973
TI  - Hydrogen flash in stars
JA  - Nature
JO  - Nature
VL  - 242
SP  - 395
EP  - 396
DO  - 10.1038/242395a0
ER  -

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