Extended Far-Infrared Emission Associated With Mass Outflows From Young Stars - L1551 Irs-5

Coadded IRAS survey data have been examined in the L1551 region. Extended low-surface-brightness 60 and 1200-micron emission is aligned with the molecular outflow from L1551 IRS 5. The morphology and the uniform surface brightness and color temperature of the IR emission suggest that the wind from IRS 5 is the source of this emission. It is suggested that radiative heating of grains by photons generated at the stellar wind/cloud interface is a major contributor to the extended infrared emission.