Fig. A.1
Spectrum of integrated flux densities of NGC 40. The integrated flux densities collected by Sieber et al. (1981) are shown by squares. The other flux densities shown were reported at 330 MHz (Rengelink et al. 1997), 1420 MHz (Condon et al. 1998; Pineault et al. 1993), 4.85 GHz (Becker et al. 1991), 30 GHz (Pazderska et al. 2009), and 43 GHz (Umana et al. 2008) and shown by open circles. The new λ6 cm and λ11 cm measurements are marked as filled circles.
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