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One New Variable Candidate and Six Non-variable Stars at the ZZ Ceti Instability Strip

Bognár Zs., Kalup Cs., Sódor Á.

Acta Astronomica

2019

Vol. 69, No. 1

55--62

We present our results on the continuation of our survey searching for new ZZ Ceti stars, inspired by the recently launched TESS space mission. The seven targets were bright DA-type white dwarfs located close to the empirical ZZ Ceti instability strip. We successfully identified one new pulsator candidate, namely PM J22299+3024, derived detection limits for possible pulsations of four objects for the first time, and determined new detection limits for two targets.