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Table 3

Nebular mass values derived from the observed 12CO and 13CO lines.

Source M12COJ=2−1$M_{^{12}\text{CO}\, J=2-1}$ [M⊙] M12COJ=1−0$M_{^{12}\text{CO}\, J=1-0}$ [M⊙] M13COJ=2−1$M_{^{13}\text{CO}\, J=2-1}$ [M⊙] M13COJ=1−0$M_{^{13}\text{CO}\, J=1-0}$ [M⊙] M13COJ=1−0EL$M_{^{13}\text{CO}\, J=1-0}^{\text{EL}}$ [M⊙] d [pc]
HD 213985 1.8 × 10−5 <6.9 × 10−5 – <4.2 × 10−4 2.5 × 10−4 702
RV Tau 1.8 × 10−5 <1.7 × 10−4 – <1.1 × 10−3 2.5 × 10−4 1245
HD 52961 8.4 × 10−4 5.4 × 10−3 3.7 × 10−3 2.3 × 10−2 1813
U Mon 1.3 × 10−5 <8.9 × 10−5 <1.9 × 10−4 <4.7 × 10−4 1.8 × 10−4 800
HR4049 2.6 × 10−4 6.9 × 10−4 – 6.7 × 10−3 1449
IRAS 11472–0800 1.7 × 10−3 <3.8 × 10−3 – <2.2 × 10−2 2.3 × 10−2 6107
TW Cam <3.6 × 10−5 <7.2 × 10−4 – <5.7 × 10−3 <4.9 × 10−4 1757
IRAS 05208–2035 <2.5 × 10−5 <7.2 × 10−4 – <3.5 × 10−3 <3.4 × 10−4 1403
V Vul <1.6 × 10−5 <2.8 × 10−4 – <1.8 × 10−3 <2.2 × 10−4 1083
AU Peg <1.0 × 10−5 <1.3 × 10−4 – <8.0 × 10−4 <1.4 × 10−4 597

Notes. These mass values were calculated based on the distances indicated in Table 1. Sources were separated into detections (top) and nondetections (bottom). M12COJ=2−1$M_{^{12}\text{CO}\, J=2-1}$, M12COJ=1−0$M_{^{12}\text{CO}\, J=1-0}$, M13COJ=2−1$M_{^{13}\text{CO}\, J=2-1}$, and M13COJ=1−0$M_{^{13}\text{CO}\, J=1-0}$ indicate the total nebular mass according to the integrated area of the indicated rotational line (see Table 2). M13COJ=1−0EL$M_{^{13}\text{CO}\, J=1-0}^{\text{EL}}$ is the theorized total nebular mass according to the empirical law that relates the masses derived from the 13CO J = 1-0 and 12CO J = 2-1 lines.

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