The Measurement of Dynamic Tidal Contribution to Apsidal Motion in Heartbeat Star KIC 4544587

  title={The Measurement of Dynamic Tidal Contribution to Apsidal Motion in Heartbeat Star KIC 4544587},
  author={Jian-Wen Ou and Cong Yu and Ming Yang and Chen Jiang and Bo Ma and Guanfu Liu and Shang-Fei Liu and Juan-juan Luo},
  journal={The Astrophysical Journal},
Apsidal motion is a gradual shift in the position of periastron. The impact of dynamic tides on apsidal motion has long been debated, because the contribution could not be quantified due to the lack of high-quality observations. KIC 4544587 with tidally excited oscillations has been observed by Kepler high-precision photometric data based on long-time-baseline and short-cadence schema. In this paper, we compute the rate of apsidal motion that arises from the dynamic tides as 19.05 ± 1.70 mrad… 


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