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Fig. 1.


Extended radio jet emission driven by source CM2 in G035.02+0.35. Middle panel: continuum map obtained with the A-configuration of the VLA at C band (without constraints on uv-coverage). Contour levels, at multiples of the 1σ rms, are indicated at the top; levels higher than 10σ are drawn in gray shades. The beam size is shown in the bottom left corner. A scale bar in units of au is drawn near the bottom axis. The field of view covers the radio continuum sources detected within 0.1 pc from CM2 (CM8 in Fig. B.1), whose centimeter spectral index (α) traces radio thermal jet emission (from Paper I). Labels are indicated in red near each source. Components CM3, CM4, and CM6 are aligned along a position angle of 25.5° ± 0.6° with respect to CM2 (dotted line), tracing the location of four jet knots. Ticks are marked along the jet direction in steps of 6000 au from CM2. Side panels: centimeter spectral energy distribution of radio components surrounding CM2. Each plot shows the logarithm of the integrated flux (in mJy) as a function of the logarithm of the observed frequency (in Hz) for four data points. Details for CM2 were presented in Paper I. Different frequency bands are labeled near the bottom axis together with the reference wavelength; gray shades mark the boundary of each band. The spectral index values (α) and their uncertainties, derived from a linear fit of the four data points, are specified in the upper left corner of each panel. Assuming an electron temperature of 104 K, the spectral energy distribution of source CM1 is well reproduced by a model of homogeneous H II region with a Strömgren radius (RS) of 630 au, number of Lyman photons (NLy) of 1045.85 s−1, electron density (ne) of 8.8 × 104 cm−3, and emission measure of 4.8 × 107 pc cm−6.

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