Interior–atmosphere coupling on TRAPPIST-1f, g, and h: cryovolcanic water exospheres and infrared detectability

Open Access

Table 2

Planet parameters used in the model.

Parameter	Symbol	TRAPPIST-1f	TRAPPIST-1g	TRAPPIST-1h
Planet mass (M_⊕)	M_p	1.039 ± 0.031	1.321 ± 0.038	0.326 ± 0.020
Planet radius (R_⊕)	R_p	${1.045}_{- 0.012}^{+ 0.013}$ $Mathematical equation: $1.045_{ - 0.012}^{ + 0.013}$$	${1.129}_{- 0.013}^{+ 0.015}$ $Mathematical equation: $1.129_{ - 0.013}^{ + 0.015}$$	0.775±0.014
Equilibrium temperature (K)	T_eq	192	174	151
Orbital period (days)	P	9.20	12.35	18.77
Orbital eccentricity	e	0.01007	0 00208	0.00567

Notes. The planet as well as the star parameters that were used in order to calculate the planets’ equilibrium temperatures are taken from Agol et al. (2021) to account for possible surface contamination and the lower reflectivity of ice at near-infrared wavelengths, where M-dwarf spectra peak (Shields et al. 2013). For the calculation of T_eq we assumed A = 0.4. Eccentricity values are taken from Grimm et al. (2018).

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.