Resumen
Millimeter-interferometric mapping of thermal emission from molecules which trace dense gas reveals much clumpy structure in the envelopes of two AGB stars. Observations were made with the Caltech OVRO mm-array. The signal-to-noise ratio of the data allowed use of self-calibration to achieve high dynamic range images ( 100:1) in individual spectral channel maps of 0.7km/s width. The angular resolution is 2 arcsec .
