Fast pulsations in a Wolf-Rayet star

Details Fast pulsations in a Wolf-Rayet star Fast pulsations in a Wolf-Rayet star

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.360..320b&link_type=abstract

Nature (ISSN 0028-0836), vol. 360, no. 6402, p. 320, 321.

Physics

27

Stellar Oscillations, Wolf-Rayet Stars, Charge Coupled Devices, Stellar Cores, Stellar Mass Ejection

Scientific paper

The detection of a 627-second periodicity in the WN8 star HD96548 is reported. Over an observing period of 150 minutes a peak-to-peak variation of 0.005 magnitude was established, and there is some evidence of a first overtone. Theoretical models of Wolf-Rayet structure indicate that this periodicity is consistent with the fundamental radial mode, and that it could be partly driven by the epsilon mechanism, which involves a feedback between core temperature and nuclear energy generation rate.

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