Publication Abstracts

Stothers 2009

Stothers, R.B., 2009: On the period and amplitude changes in Polaris and other short-period Cepheids. Astrophys. J., 696, L37-L39, doi:10.1088/0004-637X/696/1/L37.

The observed modulation of the period and amplitude of Polaris, the short-period classical Cepheid, may be cyclical, though irregular, and superimposed on the continuing evolutionary changes of this star. If so, it curiously resembles the Blazhko effect seen in RR Lyrae stars, as Evans and her colleagues have noted. The present author's recent theory of the Blazhko effect based on a solar-like magnetoconvective cycle in the stellar envelope is here applied to Polaris, with some limited success. The theory may also explain the slow cycle seen in another short-period Cepheid, V473 Lyr. It is therefore possible to predict, tentatively, an entire new class of short-period "Blazhko Cepheids."

Export citation: [ BibTeX ] [ RIS ]

BibTeX Citation

@article{st02910j,
  author={Stothers, R. B.},
  title={On the period and amplitude changes in Polaris and other short-period Cepheids},
  year={2009},
  journal={Astrophys. J.},
  volume={696},
  pages={L37--L39},
  doi={10.1088/0004-637X/696/1/L37},
}

[ Close ]

RIS Citation

TY  - JOUR
ID  - st02910j
AU  - Stothers, R. B.
PY  - 2009
TI  - On the period and amplitude changes in Polaris and other short-period Cepheids
JA  - Astrophys. J.
VL  - 696
SP  - L37
EP  - L39
DO  - 10.1088/0004-637X/696/1/L37
ER  -

[ Close ]

• Return to 2009 Publications

• Return to Publications Homepage