Table 4
Results from the analysis of the X-ray observations and the mass loss analysis for the host stars in the sample.
| X-ray analysis | Mass-loss analysis | ||||||||||||||
|
|
|
||||||||||||||
| System | T | EMA | FX B | LX |
|
log LEUV | log LLyα | FLyα C |
D
|
FXUV E | log Ṁ | log Ṁrot | ΔM | ||
| (106 K) | (1028 erg s-1) | (erg s-1) | (erg s-1) | (g s-1) | (g s-1) | (%) | |||||||||
|
|
|||||||||||||||
| HAT-P-2 |
|
|
|
|
39. | 28.9 | 29.0 | 6.5 | 0.0−7.8 | 1.3 | 9.52 | 9.79 | 0.004 | ||
| WASP-38 | – | – | <0.8 | <1.1 | 9.4 | <28.5 | <28.7 | <3.7 | <0.3−0.4 | <0.29 | <9.42 | 9.74 | 0.008 | ||
| WASP-77 |
|
|
|
|
2.1 | 28.6 | 28.8 | 5.6 | 1.3−4.9 | 3.3 | 10.85 | 10.3 | 0.29 | ||
| WASP-10 |
|
|
|
|
1.8 | 28.6 | 28.7 | 5.7 | 0.0−6.2 | 1.2 | 9.90 | 9.47 | 0.01 | ||
| HAT-P-20 |
|
|
|
|
1.1 | 28.5 | 28.7 | 8.9 | 1.9−14.6 | 1.2 | 9.22 | 8.75 | 0.001 | ||
| WASP-8 |
|
|
|
|
1.9 | 28.7 | 28.9 | 8.0 | 3.5−13.3 | 0.46 | 9.53 | 8.90 | 0.01 | ||
| WASP-80 |
|
|
|
|
1.6 | 28.5 | 28.7 | 10.8 | 0.0−33.6 | 1.1 | 10.54 | 10.3 | 0.29 | ||
|
|
||||||||||||||
| WASP-43 | – | – | – |
|
0.76 | 28.5 | 28.7 | 6.2 | 0.3−8.7 | 6.6 | 10.84 | 10.1 | 0.21 | ||
| WASP-18 | – | – | – | <0.07 | 17. | <28.0 | <28.3 | <1.8 | <1.5−2.9 | <0.97 | <9.36 | 10.3 | 0.001 | ||
| HD 209458 | – | – | – | <0.03 | 4.0 | <27.8 | 28.6 | 15. | 22 | <0.11 | <9.94 | 10.6 | 0.04 | ||
| HD 189733 | – | – | – |
|
2.1 | 28.6 | 28.4 | 60. | 190 | 2.1 | 10.73 | 10.2 | 0.28 | ||
| 55 Cnc (b) | – | – | – | 0.04 | 0.31 | 27.7 | 28.1 | 65. | 440 | 0.01 | – | – | – | ||
| GJ 436 | – | – | – | 0.01 | 0.06 | 27.1 | 27.7 | 35. | 50 | 0.06 | 8.92 | 8.78 | 0.18 | ||
Notes. Columns are: name of the system, coronal temperature and emission measure X-ray flux at Earth; X-ray luminosity and predicted luminosity (Pizzolato et al. 2003); EUV luminosity (100–912 Å, Sanz-Forcada et al. 2011); reconstructed Lyα luminosity (Linsky et al. 2013); reconstructed Lyα flux at Earth; minimum and maximum Lyα flux at Earth after interstellar absorption; XUV flux at planetary distance; mass loss rate (Sanz-Forcada et al. 2011) and rotation based estimate (Ehrenreich & Désert 2011); and the last column is the total fractional mass loss of the planet in its lifetime (see text).
Reference. X-ray flux: WASP-43 (Czesla et al. 2013); WASP-18 (Pillitteri et al. 2014); HD 209458, HD 189733, 55 Cnc, and GJ 436 (Sanz-Forcada et al. 2011). Reconstructed Lyα flux: HD 209458 (Wood et al. 2005), HD 189733 (Bourrier & Lecavelier des Etangs 2013), 55 Cnc (Ehrenreich et al. 2012), and GJ 436 (France et al. 2013). Measured Lyα fluxes of HD 209458, HD 189733, and GJ 436 are mean integrated out-of-transit fluxes in the original HST data.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.