Continuum visibilities of Betelgeuse averaged over the continuum spectral channels between 2.28 and 2.293 μm. The insets show enlarged views of the second, third, and fourth/fifth lobes. The solid and dashed lines represent the visibilities for a uniform disk with a diameter of 42.05 mas and for a limb-darkened disk with a diameter of 42.49 mas and a limb-darkening parameter of 0.097 (power-law-type limb-darkened disk of Hestroffer 1997), respectively. The dotted lines represent the maximum range of the variations in the 2.22 μm visibility due to time-dependent inhomogeneous surface structures predicted by the three-dimensional convection simulation of Chiavassa et al. (2009), who presents the model prediction up to 70 arcsec-1.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.