Long-period magnetic activity in the K dwarf GJ1137 and a new super-Earth on a 9-day orbit - A cautionary tale for Jovian-analogue detection from Doppler surveys

Home

All issues

Volume 708 (April 2026)

A&A, 708 (2026) A232

Full HTML

Open Access

Table A.8

Parameter posteriors of our best model, against the results published by Lovis et al. (2005).

Parameter name	Symbol	Unit	Prior	Posterior
				This work	Lovis et al. (2005)
LTF parameters
Period	P_cyc	d	U_log(4000, 10⁴)	$5870_{- 350}^{+ 480}$ $Mathematical equation: $5870^{+480}_{-350}$$	−
RV phase	ϕ_{cyc, 0}	−	U(0, 1)^w	${0.837}_{- 0.043}^{+ 0.037}$ $Mathematical equation: $0.837^{+0.037}_{-0.043}$$	−
RV semi-amplitude	k_{cyc, 0}	m s⁻¹	U(0, 40)	${14.6}_{- 1.2}^{+ 1.3}$ $Mathematical equation: $14.6^{+1.3}_{-1.2}$$	−
FWHM phase	ϕ_{cyc, 1}	−	U(0, 1)^w	${0.864}_{- 0.070}^{+ 0.054}$ $Mathematical equation: $0.864^{+0.054}_{-0.070}$$	−
FWHM semi-amplitude	k_{cyc, 1}	m s⁻¹	U(0, 40)	${18.4}_{- 3.9}^{+ 3.5}$ $Mathematical equation: $18.4^{+3.5}_{-3.9}$$	−
RV zero-order correction	α_0,0	m s⁻¹	N(μ_lm,200σ_lm)	$- {4.76}_{- 1.49}^{+ 1.18}$ $Mathematical equation: $-4.76^{+1.18}_{-1.49}$$	−
FWHM zero-order correction	α_0,1	m s⁻¹	N(μ_lm,200σ_lm)	$- {9.71}_{- 2.27}^{+ 2.22}$ $Mathematical equation: $-9.71^{+2.22}_{-2.27}$$	−
HARPS-pre FWHM linear drift	β	m s⁻¹ d⁻¹	U(−0.1,0.1)	${0.0150}_{- (28)}^{+ (23)}$ $Mathematical equation: $0.0150^{+(23)}_{-(28)}$$	−
Dataset parameters
HARPS-post RV offset	O_1,0	m s⁻¹	N(0,5σ_0)	${13.4}_{- 3.2}^{+ 3.3}$ $Mathematical equation: $13.4^{+3.3}_{-3.2}$$	−
HARPS-post FWHM offset	O_1,1	m s⁻¹	N(0,5σ_1)	${23.2}_{- 6.4}^{+ 6.2}$ $Mathematical equation: $23.2^{+6.2}_{-6.4}$$	−
HARPS-pre RV jitter	J_0,0	m s⁻¹	U(0, 5)	${0.63}_{- 0.37}^{+ 0.38}$ $Mathematical equation: $0.63^{+0.38}_{-0.37}$$	−
HARPS-post RV jitter	J_1,0	m s⁻¹	U(0, 5)	${0.29}_{- 0.20}^{+ 0.26}$ $Mathematical equation: $0.29^{+0.26}_{-0.20}$$	−
HARPS-pre FWHM jitter	J_0,1	m s⁻¹	U(0, 5)	${1.97}_{- 1.14}^{+ 1.09}$ $Mathematical equation: $1.97^{+1.09}_{-1.14}$$	−
HARPS-post FWHM jitter	J_1,1	m s⁻¹	U(0, 5)	${0.67}_{- 0.48}^{+ 0.75}$ $Mathematical equation: $0.67^{+0.75}_{-0.48}$$	−
Stellar-activity parameters
Timescale	τ	d	U_log(10, 10⁴)	$73_{- 21}^{+ 33}$ $Mathematical equation: $73^{+33}_{-21}$$	−
Period	P_rot	d	U(10,52)	${32.3}_{- 1.3}^{+ 1.2}$ $Mathematical equation: $32.3^{+1.2}_{-1.3}$$	−
Sinescale (harmonic complexity)	η	−	U_log(0.1,3)	${0.85}_{- 0.17}^{+ 0.26}$ $Mathematical equation: $0.85^{+0.26}_{-0.17}$$	−
RV amplitude	A₀	m s⁻¹	U(−10³,10³)	${2.20}_{- 0.42}^{+ 0.53}$ $Mathematical equation: $2.20^{+0.53}_{-0.42}$$	−
RV gradient amplitude	B₀	m s⁻¹ d⁻¹	U(−10³,10³)	${19.9}_{- 4.7}^{+ 6.9}$ $Mathematical equation: $19.9^{+6.9}_{-4.7}$$	−
FWHM amplitude	A₁	m s⁻¹	U_log(10⁻³, 10³)	${6.99}_{- 0.99}^{+ 1.33}$ $Mathematical equation: $6.99^{+1.33}_{-0.99}$$	−
GJ 1137 b
Period	P_b	d	U(140, 150)	144.720 ± 0.029	143.58 ± 0.60
Phase	ϕ_b	−	U(0, 1)^w	0.706 ± 0.006	−
Inferior-conjunction ephemeris	ε_b	JD-2450000	derived	${7852.24}_{- 0.85}^{+ 0.89}$ $Mathematical equation: $7852.24^{+0.89}_{-0.85}$$	3181.7 ± 3.0
RV semi-amplitude	k_{rv, b}	m s⁻¹	U(0, 30)	19.8 ± 0.4	18.3 ± 0.5
Eccentricity	e_b	−	U(0, 1)	${0.118}_{- 0.015}^{+ 0.016}$ $Mathematical equation: $0.118^{+0.016}_{-0.015}$$	0.14 ± 0.03
Argument of periastron	ω_b	rad	U(0, 2π)^w	5.83 ± 0.15	5.82 ± 0.14
Semi-major axis	a_b	au	derived	0.508 ± 0.005	0.477
Minimum mass	m_b sin i_b	M_J	derived	0.451 ± 0.012	0.37
Temporal-average incident flux	Φ_b	Φ_⊕	derived	1.59 ± 0.15	−
GJ 1137 c
Period	P_c	d	U_log(1, 100)	${9.6412}_{- (11)}^{+ (12)}$ $Mathematical equation: $9.6412^{+(12)}_{-(11)}$$	−
Phase	ϕ_c	−	U(0, 1)^w	0.310 ± 0.028	−
Inferior-conjunction ephemeris	ε_c	JD-2450000	derived	7951.49 ± 0.27	−
RV semi-amplitude	k_{rv, c}	m s⁻¹	U(0, 10)	${1.73}_{- 0.23}^{+ 0.24}$ $Mathematical equation: $1.73^{+0.24}_{-0.23}$$	−
Eccentricity	e_c	−	−	0	−
Semi-major axis	a_c	au	derived	0.0835(8)	−
Minimum mass	m_c sin i_c	M_⊕	derived	${5.12}_{- 0.69}^{+ 0.70}$ $Mathematical equation: $5.12^{+0.70}_{-0.69}$$	−
Temporal-average incident flux	Φ_c	Φ_⊕	derived	${58.4}_{- 5.5}^{+ 5.6}$ $Mathematical equation: $58.4^{+5.6}_{-5.5}$$	−

Notes. ^(w)Wrapped parameter. Reported uncertainties reflect the 16^th and the 84^th percentiles. The standard deviation of measurements in physical quantity j is denoted σ_j. Uncertainties of P_c and a_c are given in parentheses, to the order of the least significant figure.

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.