We have imaged the 7 mm and 3.6 cm continuum emission from the high mass (p
roto)star system IRAS 20126+4104 with the VLA. The 7 mm emission appears un
resolved with a synthesized beam of 1." 7 x 1." 0, and comparison with 3 mm
and 1.3 mm fluxes indicates a spectral index of about 3, so that emission
from dust with an absorption coefficient proportional to nu is suggested.
The 3.6 cm emission consists of two elongated structures of approximate siz
e 0." 8 x less than or equal to 0." 2, the northern source being coincident
with the millimeter emission. The position angle of both sources is identi
cal to the large scale molecular outflow seen in HCO+(1-0).
We discuss explanations for the origin of the 3.6 cm continuum emission and
although a cluster of three ultracompact HII regions provides a feasible m
odel, we favor the interpretation of thermal ionized jets, based on the mor
phology of the emission, the velocity distribution of water masers coincide
nt with the northern source, and the CH3CN emission which is oriented perpe
ndicular to the 3.6 cm continuum emission. In this case the measured fluxes
are consistent with ionization caused by either shocks or stellar UV photo
ns.