High-Resolution Images of CO J = 2-1 Emission from the Carbon Star V Cygni

This paper presents observations of the CO J = 2–1 emission from the circumstellar envelope of the mass-losing carbon star V Cyg. The observations were made with the Caltech Millimeter Array. A previously published single-dish map was used to construct short-spacing visibilities not sampled by the interferometer data, thereby recovering missing flux in extended low brightness emission. The images have an angular resolution of ∼1.″2 with a …