Recurring Planetary Debris Transits and Circumstellar Gas around White Dwarf ZTF J0328–1219

  title={Recurring Planetary Debris Transits and Circumstellar Gas around White Dwarf ZTF J0328–1219},
  author={Zach Vanderbosch and Saul A. Rappaport and Joseph A. Guidry and Bruce L. Gary and Simon Blouin and Thomas G. Kaye and Alycia J. Weinberger and Carl Melis and Beth L. Klein and B. Zuckerman and Andrew M. Vanderburg and J. J. Hermes and Ryan J. Hegedus and Matthew R. Burleigh and Ramotholo R. Sefako and Hannah L. Worters and Tyler M. Heintz},
  journal={The Astrophysical Journal},
We present follow-up photometry and spectroscopy of ZTF J0328−1219, strengthening its status as a white dwarf exhibiting transiting planetary debris. Using TESS and Zwicky Transient Facility photometry, along with follow-up high-speed photometry from various observatories, we find evidence for two significant periods of variability at 9.937 and 11.2 hr. We interpret these as most likely the orbital periods of different debris clumps. Changes in the detailed dip structures within the light… 

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