Asymmetries on red giant branch surfaces from CHARA/MIRC optical interferometry

@article{Chiavassa2017AsymmetriesOR,
  title={Asymmetries on red giant branch surfaces from CHARA/MIRC optical interferometry},
  author={Andrea Chiavassa and Ray P. Norris and Miguel Montarg{\`e}s and Roxanne Ligi and Luca Fossati and Lionel Bigot and Fabien R. Baron and Pierre Kervella and John D. Monnier and Denis Mourard and Nicolas Nardetto and Guy Perrin and Gail H. Schaefer and Theo A. ten Brummelaar and Zazralt Magic and Remo Collet and Martin Asplund},
  journal={Astronomy and Astrophysics},
  year={2017},
  volume={600}
}
Context. Red giant branch (RGB) stars are very bright objects in galaxies and are often used as standard candles. Interferometry is the ideal tool to characterize the dynamics and morphology of their atmospheres. Aims. We aim at precisely characterising the surface dynamics of a sample of RGB stars. Methods. We obtained interferometric observations for three RGB stars with the MIRC instrument mounted at the CHARA interferometer. We looked for asymmetries on the stellar surfaces using limb… Expand

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