authors demarque p robinson f j sofia s kim y c chan k l guenther d b affiliation aa yale university ab yale university ac yale university ad yonsei university ae hong kong university of science technology af saint mary's university canada publication american astronomical society meeting bulletin of the american astronomical society vol p publication date tab research on the size and number of betelgeuse's convection cells possibly useful in a current research section abstract ads article valign top a relevant demarque title tabthe scale of granulation in red giant atmospheres