A proto-helium white dwarf with a non-interacting neutron star or black hole companion -- Uncovering the true nature of a candidate hypervelocity B-star

@inproceedings{Irrgang2020APW,
  title={A proto-helium white dwarf with a non-interacting neutron star or black hole companion -- Uncovering the true nature of a candidate hypervelocity B-star},
  author={A. Irrgang and S. Geier and U. Heber and T. Kupfer and S. Bloemen},
  year={2020}
}
  • A. Irrgang, S. Geier, +2 authors S. Bloemen
  • Published 2020
  • Physics
  • In the past, SDSS J160429.12+100002.2 was spectroscopically classified as a blue horizontal branch (BHB) star. Assuming a luminosity that is characteristic of BHB stars, the object’s radial velocity and proper motions from the second data release of Gaia would imply that its Galactic rest-frame velocity exceeds its local escape velocity. Consequently, the object would be considered a hypervelocity star, which would prove particularly interesting because its Galactic trajectory points in our… CONTINUE READING

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