The radius and effective temperature of the binary Ap star β CrB from CHARA/FLUOR and VLT/NACO observations

  title={The radius and effective temperature of the binary Ap star $\beta$ CrB from CHARA/FLUOR and VLT/NACO observations},
  author={Hans Bruntt and Pierre Kervella and A. M{\'e}rand and Isa M. Brandao and Timothy R. Bedding and Theo A. ten Brummelaar and Vincent Coud{\'e} du Foresto and Margarida S. Cunha and Christopher D. Farrington and P. J. Goldfinger and L{\'a}szl{\'o} L. Kiss and Harold A. Mcalister and Stephen T. Ridgway and Judit Sturmann and Laszlo Sturmann and Nils H. Turner and Peter G. Tuthill},
  journal={Astronomy and Astrophysics},
Context. The prospects for using the asteroseismology of rapidly oscillating Ap (roAp) stars are hampered by the large uncertainty in fundamental stellar parameters. Results in the literature for the effective temperature (Teff) often span a range of 1000 K. Aims. Our goal is to reduce systematic errors and improve the Teff calibration of Ap stars based on new interferometric measurements. Methods. We obtained long-baseline interferometric observations of β CrB using the CHARA/FLUOR instrument… 

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