Open Access

Table B.1

Priors used to determine the photometric rotation period of HN Lib.

Parameter Prior Unit Description
      dSHO-GP parameters
σGP ℐ(1, 106) ppm Standard deviation of the GP, individual for each instrument but shared between the MEarth telescopes
fGP 𝒰(0.0, 1.0) Fractional amplitude of the secondary mode compared to the primary mode, shared between all instruments
Q0,GP ℐ(0.1, 1010) Quality factor of the secondary oscillation, shared between all instruments
dQGP ℐ(0.1, 1010) Difference in quality factor between the primary and secondary oscillation, shared between all instruments
Prot, GP 𝒰(10, 200) d Period of the GP kernel, shared between all instruments
      QP-GP parameters
σGP ℐ(1, 106) ppm Standard deviation of the GP, individual for each instrument but shared between the MEarth telescopes
αGP ℐ(10−10, 1) Correlation timescale of the exponential part of the kernel, shared between all instruments
ΓGP ℐ(0, 10) Harmonic complexity of the sine part of the kernel, shared between all instruments
Prot, GP 𝒰(110, 120) d Period of the GP kernel, shared between all instruments
      Instrument parameters
mflux 𝒩 (0, 0.2) Median relative flux
σ ℐ(1, 106) ppm A jitter added in quadrature to each instrument

Notes. The prior labels 𝒰, ℐ, and 𝒩 represent uniform, log-uniform, and normal distributions, respectively.

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