Detection of new pulsations in the roAp star HD 17776

Holdsworth, Daniel Luke orcid iconORCID: 0000-0003-2002-896X (2016) Detection of new pulsations in the roAp star HD 17776. Information Bulletin on Variable Stars (6185). ISSN 0374-0676

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We report the discovery of 2 previously undetected pulsation frequencies in the known roAp star HD 177765. Photometric observations by the Kepler space telescope during K2 Campaign 7 show low-amplitude pulsations (4-11 micro mag) previously unseen in photometry. We show the pulsations to be stable over the observation period, and demonstrate that the separation of the frequencies is not representative of the large frequency separation quantity needed to perform asteroseismic analysis.

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