ZEPHYRUS parameter reference

This is a reference page for all parameters and constants used in ZEPHYRUS. For the physical model, see the model overview.

Physical constants (`constants.py`)

Name	Symbol	Value	Units
`kb`	\(k_B\)	\(1.38 \times 10^{-23}\)	J K⁻¹
`G`	\(G\)	\(6.6743 \times 10^{-11}\)	m³ kg⁻¹ s⁻²
`G_cgs`	\(G_\mathrm{cgs}\)	\(6.6743 \times 10^{-8}\)	cm³ g⁻¹ s⁻²
`c`	\(c\)	\(2.99792458 \times 10^{8}\)	m s⁻¹

Name	Symbol	Value	Units
`Rs`	\(R_\odot\)	\(6.957 \times 10^{8}\)	m
`Ms`	\(M_\odot\)	\(1.98847 \times 10^{30}\)	kg
`Ls`	\(L_\odot\)	\(3.828 \times 10^{26}\)	W
`age_sun`	–	\(4.603 \times 10^{9}\)	yr

Name	Symbol	Value	Units
`Re`	\(R_\oplus\)	\(6.378 \times 10^{6}\)	m
`Me`	\(M_\oplus\)	\(5.9722 \times 10^{24}\)	kg
`Me_atm`	–	\(5.15 \times 10^{18}\)	kg
`Fxuv_earth_10Myr`	\(F_\mathrm{XUV,\oplus}(10\,\mathrm{Myr})\)	\(14.67\)	W m⁻²
`Fxuv_earth_today`	\(F_\mathrm{XUV,\oplus}\)	\(4.64 \times 10^{-3}\)	W m⁻²
`age_earth`	–	\(4.543 \times 10^{9}\)	yr
`e_earth`	–	\(0.017\)	–
`a_earth`	–	\(1\)	au

Fxuv_earth_10Myr is taken from Fig. 9 of Wordsworth et al. (2018).

Name	Value	Errorbar	Units
`R_TOI561`	\(0.832\,R_\odot\)	\(0.019\,R_\odot\)	m
`M_TOI561`	\(0.805\,M_\odot\)	\(0.030\,M_\odot\)	kg
`L_TOI561`	\(0.522\,L_\odot\)	\(0.017\,L_\odot\)	W
`age_TOI561`	\(10 \times 10^{9}\)	\(3 \times 10^{9}\)	yr

Name	Value	Errorbar	Units
`R_TOI561b`	\(1.37\,R_\oplus\)	\(0.04\,R_\oplus\)	m
`M_TOI561b`	\(2.24\,M_\oplus\)	\(0.20\,M_\oplus\)	kg
`a_TOI561b`	\(0.0106\)	\(0.0004\)	au