SIMBAD references

2007ApJ...670L..21T - Astrophys. J., 670, L21-L24 (2007/November-3)

The nonspherical shape of Betelgeuse in the mid-infrared.

TATEBE K., CHANDLER A.A., WISHNOW E.H., HALE D.D.S. and TOWNES C.H.

Abstract (from CDS):

Three-telescope interferometric observations from the Infrared Spatial Interferometer (ISI) are reported at spatial frequencies that resolve the size and shape of the star Betelgeuse (α Ori) at a wavelength of 11.15 µm with a bandwidth of 0.18/cm. The data include closure phase measurements, the first such measurements of a stellar disk in the mid-infrared. The data indicate a clear asymmetry of the stellar surface at these wavelengths. Mechanisms for generating the observed asymmetry via an elliptical shape or a hot spot near the southern limb of the star are discussed.

Abstract Copyright:

Journal keyword(s): Infrared: Stars - stars: individual (alpha Orionis) - Stars: Late-Type - Techniques: Interferometric

Simbad objects: 3

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2020.02.27-09:11:53

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