HR1328: a cool edge "Slowly Pulsating B Star".

Details HR1328: a cool edge "Slowly Pulsating B Star". HR1328: a cool edge "Slowly Pulsating B Star".

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...307...91c&link_type=abstract

Astronomy and Astrophysics, v.307, p.91

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5

Stars: Variables: Other, Stars: Oscillations, Stars: Individual: Hr1328

Scientific paper

We report on the discovery of a photometric variability (in Stroemgren u and v filters) of HR 1328, a B8 main-sequence star. Two periods are easily derived, of the order of 0.61d and 0.77d. From the position of this star in the HR diagram together with other pulsational characteristics, HR 1328 can be classified as a Slowly Pulsating B star (SPB). Although these stars are found to oscillate in high-order g-modes the relatively short pulsation periods of HR 1328 point towards lower-order g-modes in this case. Together with HD 123515, HR 1328 extends and precises the observational cool edge of the SPB's instability strip.

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