First Results from the CHARA Array. VII. Long-Baseline Interferometric Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star

@article{Aufdenberg2006FirstRF,
  title={First Results from the CHARA Array. VII. Long-Baseline Interferometric Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star},
  author={J. Aufdenberg and A. M'erand and V. C. D. Foresto and O. Absil and E. D. Folco and P. Kervella and S. Ridgway and D. Berger and T. T. Brummelaar and H. Mcalister and J. Sturmann and L. Sturmann and N. Turner},
  journal={The Astrophysical Journal},
  year={2006},
  volume={645},
  pages={664-675}
}
  • J. Aufdenberg, A. M'erand, +10 authors N. Turner
  • Published 2006
  • Physics
  • The Astrophysical Journal
  • We have obtained high-precision interferometric measurements of Vega with the CHARA Array and FLUOR beam combiner in the K’ band at projected baselines between 103m and 273m. The measured visibility amplitudes beyond the first lobe are significantly weaker than expected for a slowly rotating star characterized by a single effective temperature and surface gravity. Our measurements, when compared to synthetic visibilities and synthetic spectrophotometry from a Roche-von Zeipel gravitydarkened… CONTINUE READING
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