A second case of outbursts in a pulsating white dwarf observed by Kepler

@article{Hermes2015ASC,
  title={A second case of outbursts in a pulsating white dwarf observed by Kepler},
  author={J. Hermes and M. Montgomery and K. Bell and P. Chote and B. G{\"a}nsicke and S. Kawaler and J. Clemens and B. Dunlap and D. Winget and David J Armstrong},
  journal={The Astrophysical Journal},
  year={2015},
  volume={810}
}
  • J. Hermes, M. Montgomery, +7 authors David J Armstrong
  • Published 2015
  • Physics
  • The Astrophysical Journal
  • We present observations of a new phenomenon in pulsating white dwarf stars: large-amplitude outbursts at timescales much longer than the pulsation periods. The cool (${T}_{\mathrm{eff}}$ = 11,060 K), hydrogen-atmosphere pulsating white dwarf PG 1149+057 was observed nearly continuously for more than 78.8 day by the extended Kepler mission in K2 Campaign 1. The target showed 10 outburst events, recurring roughly every 8 day and lasting roughly 15 hr, with maximum flux excursions up to 45% in the… CONTINUE READING
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