@article{discovery10142,
          number = {1},
         journal = {The Astrophysical Journal},
            year = {2006},
           pages = {L41--L44},
          volume = {644},
           title = {First evidence for molecular interfaces between outflows and ambient clouds in high-mass star-forming regions?},
           month = {June},
          author = {Codella, C. and Viti, S. and Williams, D. A. and Bachiller, R.},
        abstract = {We present new observations of the Cep A East region of massive star formation and describe an extended and dynamically distinct feature not previously recognized. This feature is present in emission from H2CS, OCS, CH3OH, and HDO at ?5.5 km s?1 but is not traced by the conventional tracers of star-forming regions, H2S, SO2, SO, and CS. The feature is extended up to at least 0.1 pc. We show that the feature is neither a hot core nor a shocked outflow. However, the chemistry of the feature is consistent with predictions from a model of an eroding interface between a fast wind and a dense core; mixing between the two media occurs in the interface on a timescale of 10-50 yr. If these observations are confirmed by detailed maps and by detections in species also predicted to be abundant (e.g., HCO+, H2CO, and NH3), this feature would be the first detection of such an interface in regions of massive star formation. An important implication of the model is that a significant reservoir of sulfur in grain mantles is required to be in the form of OCS.},
             url = {http://dx.doi.org/10.1086/505426},
            issn = {0004-637X}
}