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Observations of outflows associated with pre-main-sequence stars revealdetails about morphology, binarity and evolutionary states of young stellarobjects. We present molecular line data from the Berkeley-Illinois-MarylandAssociation array and Five Colleges Radio Astronomical Observatory toward theregions containing the Herbig Ae/Be stars LkHa 198 and LkHa 225S. Single dishobservations of 12CO 1-0, 13CO 1-0, N2H+ 1-0 and CS 2-1 were made over a fieldof 4.3' x 4.3' for each species. 12CO data from FCRAO were combined with highresolution BIMA array data to achieve a naturally-weighted synthesized beam of6.75'' x 5.5'' toward LkHa 198 and 5.7'' x 3.95'' toward LkHa 225S,representing resolution improvements of factors of approximately 10 and 5 overexisting data. By using uniform weighting, we achieved another factor of twoimprovement. The outflow around LkHa 198 resolves into at least four outflows,none of which are centered on LkHa 198-IR, but even at our resolution, wecannot exclude the possibility of an outflow associated with this source. Inthe LkHa 225S region, we find evidence for two outflows associated with LkHa225S itself and a third outflow is likely driven by this source. Identificationof the driving sources is still resolution-limited and is also complicated bythe presence of three clouds along the line of sight toward the Cygnusmolecular cloud. 13CO is present in the environments of both stars along withcold, dense gas as traced by CS and (in LkHa 225S) N2H+. No 2.6 mm continuum isdetected in either region in relatively shallow maps compared to existingcontinuum observations.

The Molecular Gas Environment around Two Herbig Ae/Be Stars: Resolving the Outflows of LkHa 198 and LkHa 225S