Open Access
Table 1
Properties of the potential new outflow in [BHB2007] 11.
Property | Value | Obtained from |
---|---|---|
Length of a single lobe, R | 3300 ± 700 au | H13CO+, CCH and c-C3H2 PV diagrams (Fig. 3) |
Expansion velocity, vexp | 2.2 ± 0.4 km s−1 | H13CO+, CCH and c-C3H2 blueshifted PV diagrams (Fig. 3) |
Mass M | (1.19 ± 0.11) × 10−2M⊙ | C18O column density in the lobes |
Dynamical timescale, tdyn | 7000 ± 1900 yr | tdyn = R/vexp |
Mass loss rate, ![]() |
(1.7 ± 0.5) × 10−6 M⊙ yr−1 | ![]() |
Momentum injection rate, ![]() |
(3.7 ± 1.3) × 10−6M⊙ km s−1 yr−1 | ![]() |
Kinetic energy, E | (6 ± 2) × 1041 erg | ![]() |
Energy injection rate, ![]() |
(9 ± 4) × 1037 erg yr−1 | ![]() |
Specific angular momentum, l | 70 ± 25 au km s−1 | H13CO+ transversal PV diagrams in the redshifted lobe (Figs. 4, 5 and 6) |
Launching radius, r0 | 90 ± 30 au | H13CO+ transversal PV diagrams in the redshifted lobe (Figs. 4, 5 and 6) |
SiO abundance, χ(SiO) | ≥ (0.11–2.0) × 10−9 | SiO, C18O and H13CO+ column density in the SiO emitting region (Fig. 2) |
Notes. The quantities are corrected for the inclination of the two circumstellar disks, 40 ± 10° (Alves et al. 2019).
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