Data products and models for: "BOWIE-ALIGN: Exploring degeneracies in the muted transmission spectrum of the aligned hot Jupiter NGTS-2b with NIRSpec/G395H."

Data products and retrieval models for Fairman et. al. 2026, MNRAS: BOWIE-ALIGN: Exploring degeneracies in the muted transmission spectrum of the aligned hot Jupiter NGTS-2b with NIRSpec/G395H.

Contents of this record: 

ExoTiC-JEDI Data Products:

Extracted stellar spectra for JWST NIRSpec/G395H NRS1 and NRS2.

White light curves and spectroscopic light curves at R=100 and R=400 spectral resolutions.

Transmission spectra at R=100 and R=400 as presented in the paper. 

Tiberius Data Products:

Extracted stellar spectra for JWST NIRSpec/G395H NRS1 and NRS2.

White light curves and spectroscopic light curves at R=100 and R=400 spectral resolutions.

Transmission spectra at R=100 and R=400 as presented in the paper. 

POSEIDON retrieval results:

Equilibrium retrieval outputs from both ExoTiC-JEDI and Tiberius reductions at spectral resolutions of R=100 and R=400. The file structure contains corner plots and samples of posterior distributions, retrieved median spectra with 1 and 2 sigma confidence intervals, and results files with median parameter values and retrieval statistics. The following retrieval models from the paper are included:

Equilibrium model without an offset between NRS1 and NRS2

Equilibrium model with an offset between NRS1 and NRS2

Equilibrium model with an offset between NRS1 and NRS2 with a reduced upper metallicity prior bound. 

Free chemistry retrieval outputs from both ExoTiC-JEDI and Tiberius reductions at spectral resolutions of R=100 and R=400. The file structure contains corner plots and samples of posterior distributions, retrieved median spectra with 1 and 2 sigma confidence intervals, and results files with median parameter values and retrieval statistics. The following retrieval models from the paper are included:

Model I (containing SO opacity)

Model II (without SO opacity)

Model II (mmw limited) - An upper bound of 3 is set on the mean molecular weight of the atmosphere.

Model II - with the addition of an inhomogeneous cloud parameter

petitRADTRANS retrieval results:

Equilibrium and hybrid retreivals for both ExoTiC-JEDI and Tiberius reductions at spectral resolutions of R=100 and R=400.

Free chemistry retirevals with and without SO opacity for the ExoTiC-JEDI and Tiberius reductions.