Table 1: Millimeter flux densities, sizes, spectral indexes and masses.
  Position Peak Gaussian width1 Int. Intensity Mass2 Size3 $\alpha$4 Sensitivity5 Sampled area6
    (mJy/beam) ('') (mJy) ($M_\odot$) (AU)   ($M_\odot$) r(pc)
Serpens-FIRS 1        
1.3 mm 18:29:49.80 01:15:20.41 273(1) 0.50 $''\times0.63''$ 357 0.1 65 1.57 0.01 0.02
3.3 mm 18:29:49.80 01:15:20.41 63(0.5) 0.80 $''\times1.73''$ 71         0.04
CB 3-1        
1.3 mm 00:28:42.60 56:42:01.11 20(1) 0.36 $''\times0.48''$ 34 0.62 600 2.52 0.04 0.16
3.3 mm 00:28:42.60 56:42:01.11 2.0(0.5) 0.88 $''\times1.27''$ 2.9         0.32
CB 3-2        
1.3 mm 00:28:42.20 56:42:05.11 10(1) 0.31 $''\times0.43''$ 13 0.24 330 1.87 0.04 0.16
3.3 mm 00:28:42.20 56:42:05.11 2.1(0.5) 0.80 $''\times1.00''$ 2.1         0.32
1 Half-power width of the fitted 2D elliptical Gaussian. 2 Mass estimated using the 1.3mm fluxes and assuming $T_{\rm d}=100$ K and $\kappa_{1.3~\rm mm}=0.01$ g-1 cm2. 3 Deconvolved source size at 1.3 mm. 4 1.3 mm/3.3 mm spectral index. 5 5$\times$rms mass sensitivity derived from the 1.3 mm image assuming $T_{\rm d}=100$ K and $\kappa_{\rm 1.3~mm}=0.01$ g-1 cm2. 6 Radius (HPBW/2) of the PdBI primary beam at the source distance.

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