Overview of the wind aggregates quantities considered. Φ0 is the absolute amount of magnetic flux exiting the stellar surface, Φopen/Φ0 is the fraction of Φ0 contained in open field lines, Sopen/S is the fraction of the stellar surface area where the field lines are open, |$i_{B_r=0}$| is the angle between the inner current sheet and the stellar axis of rotation; this corresponds to the dipole inclination for a dipolar magnetic field, Φaxi/Φopen is the axisymmetric open flux fraction, |$R_{\small {A}}$| is the distance to the Alfvén surface averaged over the stellar surface, |$|\boldsymbol{\boldsymbol {r}}_{\small {A}}\times \boldsymbol{\boldsymbol {\hat{z}}}|$| is the torque arm length at the Alfvén surface averaged over the stellar surface, |$\dot{M}$| is the stellar mass-loss, |$\dot{J}$| is the stellar angular momentum loss, |$P_{\small {W}}^{\oplus }$| is the average wind pressure for an Earth-like planet at 1 au, and Rmag/Rp is the magnetospheric stand-off distance in Earth radii for an Earth-like planet.
Case . | Φ0 . | Φopen . | Sopen . | |$i_{B_r=0}$| . | Φaxi . | |$R_{\small {A}}$| . | |$|\boldsymbol{\boldsymbol {r}}_{\small {A}}\times \hat{z}|$| . | |$\dot{M}$| . | |$\dot{J}$| . | |$P^{\oplus }_{\small {W}}$| . | Rmag . |
---|---|---|---|---|---|---|---|---|---|---|---|
. | (Wb) . | (Φ0) . | (S) . | (○) . | (Φopen) . | (R⋆) . | (R⋆) . | |$\left(\mathrm{kg\, s}^{-1}\right)$| . | |$\left(\mathrm{N\, m}\right)$| . | (Pa) . | (Rp) . |
β Vir 14–Feb 22 | 2.9 × 10+14 | 0.86 | 0.56 | 13.6 | 0.90 | 4.3 | 3.3 | 8.8 × 10+8 | 1.2 × 10+23 | 1.0 × 10−9 | 11.1 |
β Vir 1– Mar 29 | 1.3 × 10+15 | 0.66 | 0.32 | 24.5 | 0.82 | 6.1 | 4.7 | 4.2 × 10+9 | 1.1 × 10+24 | 4.9 × 10−9 | 8.6 |
β Vir 3– Apr 24 | 1.6 × 10+15 | 0.68 | 0.37 | 23.0 | 0.81 | 6.4 | 4.9 | 5.4 × 10+9 | 1.5 × 10+24 | 6.1 × 10−9 | 8.3 |
θ Dra 6– Apr 24 | 7.7 × 10+15 | 0.81 | 0.32 | 30.2 | 0.69 | 6.5 | 5.0 | 2.5 × 10+10 | 4.2 × 10+25 | 3.4 × 10−8 | 6.2 |
θ Dra May 15–Jun 18 | 3.8 × 10+15 | 0.90 | 0.35 | 82.1 | 0.34 | 4.6 | 3.6 | 2.0 × 10+10 | 1.8 × 10+25 | 1.6 × 10−8 | 7.1 |
Case . | Φ0 . | Φopen . | Sopen . | |$i_{B_r=0}$| . | Φaxi . | |$R_{\small {A}}$| . | |$|\boldsymbol{\boldsymbol {r}}_{\small {A}}\times \hat{z}|$| . | |$\dot{M}$| . | |$\dot{J}$| . | |$P^{\oplus }_{\small {W}}$| . | Rmag . |
---|---|---|---|---|---|---|---|---|---|---|---|
. | (Wb) . | (Φ0) . | (S) . | (○) . | (Φopen) . | (R⋆) . | (R⋆) . | |$\left(\mathrm{kg\, s}^{-1}\right)$| . | |$\left(\mathrm{N\, m}\right)$| . | (Pa) . | (Rp) . |
β Vir 14–Feb 22 | 2.9 × 10+14 | 0.86 | 0.56 | 13.6 | 0.90 | 4.3 | 3.3 | 8.8 × 10+8 | 1.2 × 10+23 | 1.0 × 10−9 | 11.1 |
β Vir 1– Mar 29 | 1.3 × 10+15 | 0.66 | 0.32 | 24.5 | 0.82 | 6.1 | 4.7 | 4.2 × 10+9 | 1.1 × 10+24 | 4.9 × 10−9 | 8.6 |
β Vir 3– Apr 24 | 1.6 × 10+15 | 0.68 | 0.37 | 23.0 | 0.81 | 6.4 | 4.9 | 5.4 × 10+9 | 1.5 × 10+24 | 6.1 × 10−9 | 8.3 |
θ Dra 6– Apr 24 | 7.7 × 10+15 | 0.81 | 0.32 | 30.2 | 0.69 | 6.5 | 5.0 | 2.5 × 10+10 | 4.2 × 10+25 | 3.4 × 10−8 | 6.2 |
θ Dra May 15–Jun 18 | 3.8 × 10+15 | 0.90 | 0.35 | 82.1 | 0.34 | 4.6 | 3.6 | 2.0 × 10+10 | 1.8 × 10+25 | 1.6 × 10−8 | 7.1 |
Overview of the wind aggregates quantities considered. Φ0 is the absolute amount of magnetic flux exiting the stellar surface, Φopen/Φ0 is the fraction of Φ0 contained in open field lines, Sopen/S is the fraction of the stellar surface area where the field lines are open, |$i_{B_r=0}$| is the angle between the inner current sheet and the stellar axis of rotation; this corresponds to the dipole inclination for a dipolar magnetic field, Φaxi/Φopen is the axisymmetric open flux fraction, |$R_{\small {A}}$| is the distance to the Alfvén surface averaged over the stellar surface, |$|\boldsymbol{\boldsymbol {r}}_{\small {A}}\times \boldsymbol{\boldsymbol {\hat{z}}}|$| is the torque arm length at the Alfvén surface averaged over the stellar surface, |$\dot{M}$| is the stellar mass-loss, |$\dot{J}$| is the stellar angular momentum loss, |$P_{\small {W}}^{\oplus }$| is the average wind pressure for an Earth-like planet at 1 au, and Rmag/Rp is the magnetospheric stand-off distance in Earth radii for an Earth-like planet.
Case . | Φ0 . | Φopen . | Sopen . | |$i_{B_r=0}$| . | Φaxi . | |$R_{\small {A}}$| . | |$|\boldsymbol{\boldsymbol {r}}_{\small {A}}\times \hat{z}|$| . | |$\dot{M}$| . | |$\dot{J}$| . | |$P^{\oplus }_{\small {W}}$| . | Rmag . |
---|---|---|---|---|---|---|---|---|---|---|---|
. | (Wb) . | (Φ0) . | (S) . | (○) . | (Φopen) . | (R⋆) . | (R⋆) . | |$\left(\mathrm{kg\, s}^{-1}\right)$| . | |$\left(\mathrm{N\, m}\right)$| . | (Pa) . | (Rp) . |
β Vir 14–Feb 22 | 2.9 × 10+14 | 0.86 | 0.56 | 13.6 | 0.90 | 4.3 | 3.3 | 8.8 × 10+8 | 1.2 × 10+23 | 1.0 × 10−9 | 11.1 |
β Vir 1– Mar 29 | 1.3 × 10+15 | 0.66 | 0.32 | 24.5 | 0.82 | 6.1 | 4.7 | 4.2 × 10+9 | 1.1 × 10+24 | 4.9 × 10−9 | 8.6 |
β Vir 3– Apr 24 | 1.6 × 10+15 | 0.68 | 0.37 | 23.0 | 0.81 | 6.4 | 4.9 | 5.4 × 10+9 | 1.5 × 10+24 | 6.1 × 10−9 | 8.3 |
θ Dra 6– Apr 24 | 7.7 × 10+15 | 0.81 | 0.32 | 30.2 | 0.69 | 6.5 | 5.0 | 2.5 × 10+10 | 4.2 × 10+25 | 3.4 × 10−8 | 6.2 |
θ Dra May 15–Jun 18 | 3.8 × 10+15 | 0.90 | 0.35 | 82.1 | 0.34 | 4.6 | 3.6 | 2.0 × 10+10 | 1.8 × 10+25 | 1.6 × 10−8 | 7.1 |
Case . | Φ0 . | Φopen . | Sopen . | |$i_{B_r=0}$| . | Φaxi . | |$R_{\small {A}}$| . | |$|\boldsymbol{\boldsymbol {r}}_{\small {A}}\times \hat{z}|$| . | |$\dot{M}$| . | |$\dot{J}$| . | |$P^{\oplus }_{\small {W}}$| . | Rmag . |
---|---|---|---|---|---|---|---|---|---|---|---|
. | (Wb) . | (Φ0) . | (S) . | (○) . | (Φopen) . | (R⋆) . | (R⋆) . | |$\left(\mathrm{kg\, s}^{-1}\right)$| . | |$\left(\mathrm{N\, m}\right)$| . | (Pa) . | (Rp) . |
β Vir 14–Feb 22 | 2.9 × 10+14 | 0.86 | 0.56 | 13.6 | 0.90 | 4.3 | 3.3 | 8.8 × 10+8 | 1.2 × 10+23 | 1.0 × 10−9 | 11.1 |
β Vir 1– Mar 29 | 1.3 × 10+15 | 0.66 | 0.32 | 24.5 | 0.82 | 6.1 | 4.7 | 4.2 × 10+9 | 1.1 × 10+24 | 4.9 × 10−9 | 8.6 |
β Vir 3– Apr 24 | 1.6 × 10+15 | 0.68 | 0.37 | 23.0 | 0.81 | 6.4 | 4.9 | 5.4 × 10+9 | 1.5 × 10+24 | 6.1 × 10−9 | 8.3 |
θ Dra 6– Apr 24 | 7.7 × 10+15 | 0.81 | 0.32 | 30.2 | 0.69 | 6.5 | 5.0 | 2.5 × 10+10 | 4.2 × 10+25 | 3.4 × 10−8 | 6.2 |
θ Dra May 15–Jun 18 | 3.8 × 10+15 | 0.90 | 0.35 | 82.1 | 0.34 | 4.6 | 3.6 | 2.0 × 10+10 | 1.8 × 10+25 | 1.6 × 10−8 | 7.1 |
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