Publication Abstracts

Stothers 2012

Stothers, R.B., 2012: Yellow hypergiants show long secondary periods? Astrophys. J., 752, 151, doi:10.1088/0004-637X/751/2/151.

There is observational evidence that intermittent long secondary periods of ∼1000 days are present in the well-observed yellow hypergiants ρ Cas and HR 8752. The long secondary period is interpreted here as the turnover time of giant convection cells in the convective envelope, as has been already suggested in the case of red giants and supergiants of high luminosity. The observed secondary periods and surface radial velocities of ρ Cas and HR 8752 agree with the theoretical predictions, within the expected errors. These results support a theoretical interpretation that now covers the entire initial mass range from 1 to 50 M for luminous cool stars.

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BibTeX Citation

  author={Stothers, R. B.},
  title={Yellow hypergiants show long secondary periods?},
  journal={Astrophys. J.},

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RIS Citation

ID  - st07020l
AU  - Stothers, R. B.
PY  - 2012
TI  - Yellow hypergiants show long secondary periods?
JA  - Astrophys. J.
VL  - 752
SP  - 151
DO  - 10.1088/0004-637X/751/2/151
ER  -

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