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Table 8

Comparison of photon-heated and outflow masses over the area mapped by 13CO 6–5.

Source M total a M cones b M outflow c M UV d
envelope envelope 12CO 6–5 13CO 6–5
IRAS 4A 5.0 1.5 3.7 × 10-3 1.7 × 10-2
IRAS 4B 3.1 0.9 1.0 × 10-3 ...

Notes. All masses are given in M⊙ and the area taken in the calculations is shown in Fig. 19.

(a)

Total mass of the spherical envelope inferred from the continuum radiative-transfer modeling using DUSTY.

(b)

Envelope mass in both of the outflow cones assuming that each cone contains  ~15% of the total envelope mass out to the mapped radius.

(c)

Outflow mass calculated from the 12CO 6–5 outflow wings over the mapped 13CO area.

(d)

UV photon-heated gas mass calculated from the narrow 13CO 6–5 spectra over the mapped area after subtracting the modeled envelope emission.

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