THE AGES OF A-STARS. I. INTERFEROMETRIC OBSERVATIONS AND AGE ESTIMATES FOR STARS IN THE URSA MAJOR MOVING GROUP

@article{Jones2015THEAO,
  title={THE AGES OF A-STARS. I. INTERFEROMETRIC OBSERVATIONS AND AGE ESTIMATES FOR STARS IN THE URSA MAJOR MOVING GROUP},
  author={Jeremy Jones and R. J. White and Tabetha S. Boyajian and Gail H. Schaefer and Ellyn K. Baines and Michael J. Ireland and Jennifer L. Patience and Theo A. ten Brummelaar and Harold A. Mcalister and Stephen T. Ridgway and Judit Sturmann and Laszlo Sturmann and Nils H. Turner and Christopher D. Farrington and P. J. Goldfinger},
  journal={The Astrophysical Journal},
  year={2015},
  volume={813}
}
We have observed and spatially resolved a set of seven A-type stars in the nearby Ursa Major moving group with the Classic, CLIMB, and PAVO beam combiners on the Center for High Angular Resolution Astronomy Array. At least four of these stars have large rotational velocities ( v sin i ≳ ?> 170 km s − 1 ?> ) and are expected to be oblate. These interferometric measurements, the stars’ observed photometric energy distributions, and v sin i ?> values are used to computationally construct model… 

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