Publication Abstracts

Stothers and Chin 1994

Stothers, R.B., and C.-W. Chin, 1994: More missing stellar opacity? Astrophys. J., 421, L91-L93, doi:10.1086/187195.

Observational data for Population I stars have shown that blue loops on the H-R diagram form for stellar masses as low as ∼4 M. However, current state-of-the-art stellar models, unlike the older ones that were based on smaller opacities, fail to loop out of the red-giant region during core helium burning for masses less than 7 M. A possible explanation is that the currently used Livermore opacities need to be further increased, by at least 70%, at temperatures characteristic of the base of the outer convection zone, around 1×106 K. Indeed, no other suggested remedy seems to yield a blue loop at the lowest observed loop luminosities.

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BibTeX Citation

@article{st04700p,
  author={Stothers, R. B. and Chin, C.-W.},
  title={More missing stellar opacity?},
  year={1994},
  journal={Astrophys. J.},
  volume={421},
  pages={L91--L93},
  doi={10.1086/187195},
}

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RIS Citation

TY  - JOUR
ID  - st04700p
AU  - Stothers, R. B.
AU  - Chin, C.-W.
PY  - 1994
TI  - More missing stellar opacity?
JA  - Astrophys. J.
VL  - 421
SP  - L91
EP  - L93
DO  - 10.1086/187195
ER  -

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