Table 4.
Maximum Possible Atomic Hydrogen Escape Rates Estimated with the Energy-Limited Escape Formula of Eq. 29 as a Function of Heating Efficiency η and Stellar XUV Flux Values Normalized to the XUV Flux at 1 AU (Habitable Zone) of the Present Sun for an H-Rich Earth Analog Planet and a Super-Earth with a Size of 2 REarth and a Mass of 10 MEarth
| 1 XUV | 5 XUV | 10 XUV | 50 XUV | 100 XUV | |
|---|---|---|---|---|---|
| H-rich Earth | |||||
| Len [s−1]: η=15% | ∼6.4×1029 | ∼3.2×1030 | ∼6.4×1030 | ∼3.2×1031 | ∼6.4×1031 |
| Len [s−1]: η=40% | ∼1.7×1030 | ∼8.5×1030 | ∼1.7×1031 | ∼8.5×1031 | ∼1.7×1032 |
| Len [s−1]: η=100% | ∼4.3×1030 | ∼2.1×1031 | ∼4.3×1031 | ∼2.1×1032 | ∼4.3×1032 |
| H-rich super-Earth | |||||
| Len [s−1]: η=15% | ∼5.1×1029 | ∼2.5×1030 | ∼5.1×1030 | ∼2.5×1031 | ∼5.1×1031 |
| Len [s−1]: η=40% | ∼1.3×1030 | ∼6.5×1030 | ∼1.4×1031 | ∼6.5×1031 | ∼1.4×1032 |
| Len [s−1]: η=100% | ∼3.4×1030 | ∼1.7×1031 | ∼3.4×1031 | ∼1.7×1032 | ∼3.4×1032 |