• DOI:10.1088/2041-8205/810/1/L5
Corpus ID: 14251380

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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