| Abstract
| - Using new deep VLA and HST observations of the large-scale jet in 3C 273 matched to 0 $\farcs$3 resolution, we have detected excess near-ultraviolet emission ( $\lambda\,300\mbox{${\rm\,nm}$}$) above a synchrotron cutoff spectrum accounting for the emission from radio through optical ( $\lambda\lambda 3.6\mbox{${\rm\, cm}$}$- $620\mbox{${\rm\,nm}$}$). This necessitates a two-component model for the emission. The radio-optical-X-ray spectral energy distributions suggest a common origin for the UV excess and the X-rays from the jet.
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