This paper reports the results of a Berkeley-Illinois-Maryland array
interferometric observation of EP Aqr, a semiregular pulsating star with a
double component line profile in the CO J=1-0 line. The broad component shows a
flat-top profile, and the narrow component shows a spiky strong peak. Though
the previous single dish observations suggested that the CO J=2-1 line exhibits
a Gaussian-like profile, the CO J=1-0 line does not. The spatial distributions
of both the narrow and broad components appears to be roughly round with the
same peak positions. No significant velocity gradient is seen. The
spatial-kinetic properties of the molecular envelope of EP Aqr are reminiscent
of a multiple shell structure model rather than a bipolar flow and disk model.
A problem of this interpretation is that no evidence of interaction between the
narrow and broad component regions is seen. A Gaussian-like feature seen in the
CO J=2-1 line might play a key role to understand the spatio-kinetic properties
of the molecular envelope of EP Aqr.Comment: 10 pages, 3 figures; accepted for publication in Ap