Multimode Cepheids in the Large Magellanic Cloud - challenges for theory

Details Multimode Cepheids in the Large Magellanic Cloud - challenges for theory Multimode Cepheids in the Large Magellanic Cloud - challenges for theory

2009-07-09

arxiv.org/abs/0907.1417v1

AIP Conf.Proc.1170:83-85,2009

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

3 pages, 4 figures, Stellar Pulsation: Challenges for Theory and Observation, Santa Fe, NM, 31 May - 5 June, 2009

Scientific paper

10.1063/1.3246580

Data on multimode Cepheids from OGLE-III catalog of the LMC Cepheids are confronted with results from model calculations. Models whose radial mode periods are consistent with observation are not always in agreement with published evolutionary models. Nonradial mode interpretation is considered for the cases of unusual period ratios. The greatest challenge for stellar pulsation theory is explanation of double-mode pulsators with period ratios near 0.6.

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