On the Near-Infrared Size of Vega

  title={On the Near-Infrared Size of Vega},
  author={David R. Ciardi and Gerard T. van Belle and Rachel L. Akeson and Robert Russell Thompson and Elizabeth A. Lada and Steve B. Howell},
  journal={The Astrophysical Journal},
Near-infrared (2.2 μm) long baseline interferometric observations of Vega are presented. The stellar disk of the star has been resolved, and the data have been fitted with a limb-darkened stellar disk of diameter ΘLD = 3.28 ± 0.01 mas. The derived effective temperature is Teff = 9553 ± 111 K. However, the residuals resulting from the stellar disk model appear to be significant and display organized structure. Instrumental artifacts, stellar surface structure, stellar atmosphere structure, and… 

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