RAPID ORBITAL DECAY IN THE 12.75-MINUTE BINARY WHITE DWARF J0651+2844

@article{Hermes2012RAPIDOD,
  title={RAPID ORBITAL DECAY IN THE 12.75-MINUTE BINARY WHITE DWARF J0651+2844},
  author={J. Hermes and M. Kilic and Warren R. Brown and D. Winget and C. Prieto and A. Gianninas and A. Mukadam and A. Cabrera-Lavers and S. Kenyon},
  journal={The Astrophysical Journal},
  year={2012},
  volume={757}
}
We report the detection of orbital decay in the 12.75-min, detached binary white dwarf (WD) SDSS J065133.338+284423.37 (hereafter J0651). Our photometric observations over a 13-month baseline constrain the orbital period to 765.206543(55) s and indicate the orbit is decreasing at a rate of ( 9.8 ± 2.8) × 10 −12 s s −1 (or 0.31 ± 0.09 ms yr −1 ). We revise the system parameters based on our new photometric and spectroscopic observations: J0651 contains two WDs with M1 = 0.26±0.04 M⊙ and M2 = 0… Expand

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