DOI: 10.5281/zenodo.12536821
title: Data for Estimate of water and hydroxyl abundance on asteroid (16) Psyche from JWST data

description: The data as ASCII files used to produce the figures in the manuscript, " Estimate of water and hydroxyl abundance on asteroid (16) Psyche from JWST data". Almost all the files are ECSV files created from astropy Table. These files have complete metadata headers. Otherwise, the data, where appropriate, include s3d fits IFU data cubes used to produce 1D spectra, the solar spectra output by the Planetary Spectrum Generator, a thermophysical model output, asteroid reflectance measurements, and chondrite reflectance measurements all of which are described in further detail below. 

The Figures folder contains data behind the figures where data were used.

For Figure 2 this corresponds to the NIRSpec and MIRI flux observations with a column for wavelength (in microns), flux (in Jansky), and error (in Jansky). 

For Figure 3 this corresponds to the normalized reflectance for the NIRSpec observations. The first column in each dataset corresponds to the wavelength in microns, the second column to the normalized reflectance (unitless), the third column to the error (unitless), and in the case of the .txt files the fourth column corresponds to the gaussian fit to the normalized reflectance. 

For Figure 4 these are the normalized reflectance divided by the continuum of the groups of data along wavelength ranges described in the manuscript for Figure 4. The first column corresponds to the wavelength in microns, the second column to the reflectance, the third column to the continuum fit to the data, the fourth column is the normalized reflectance divided by the continuum, and the error. 

For Figure 5 these are the data used to produce the 3-micron feature plot with the gaussian fit for each NIRSpec observation. The first column corresponds to the wavelength in microns, second column to the normalized reflectance divided by the continuum (unitless) and subtracted from the mean of the continuum between 3.6 and 3.7 microns such that the average of the continuum would be 0, the fourth column the error (unitless), and the fifth column the gaussian fit to the data. 

For Figure 6 the only additional data needed to produce this plot beyond what is provided for Figure 5 is the IRTF data which is provided as a text file. The first column corresponds to the wavelength in microns, the second column to the normalized reflectance divided by the continuum (unitless), and the third column to the error (unitless). 

For Figure 7 the additional data used to produce this plot beyond what is provided for Figure 5 includes laboratory reflectance measurements of various chondrites. The .scl files are the original laboratory measurements where the first column corresponds to the wavelength in microns, the second column to the normalized reflectance (unitless) and the third column to the error to 1 significant digit (unitless). The scaled_lab_reflectance.txt file has all the laboratory reflectance data used to produce the Figure 7 plot that includes the wavelength in microns, the normalized scaled reflectance for the CM chondrite, the normalized scaled reflectance for the CH/CBb chondrite, and the normalized scaled reflectance for the CY chondrite. 

For Figure 8 the additional data include original normalized reflectance data for asteroids interamnia, themis, bamberga, and europa as .trim files. The columns for these files correspond to wavelength in microns, normalized reflectance (unitless), and the error (unitless). The 'continuumremoved' .txt files correspond to the wavelength in microns and the normalized reflectance divided by the continuum (unitless). 

For Figure 9 these are the MIRI emissivity data for the two sets of observations. The first column corresponds to the wavelength in microns, the second column to the normalized emission by taking the flux subtracting the solar flux and dividing by a thermophysical model (unitless), the error (unitless), and the gaussian fit to the normalized emission. 

For the supplemental figures these are the additional fit absorption features that are located in the appendix of the manuscript. For the 1.25 - 4.8 micron text files the columns correspond to the wavelength in microns, the continuum divided normalized reflectance (unitless), the error (unitless), and the gaussian fit. For the 5.74 - 5.98 micron text files the columns correspond to wavelength in microns, normalized emission divided by a linear fit to a region outside any potential features (unitless), the error (unitless), and the gaussian fit to the feature. 

The MIRI 1D spectra folder contains the ASCII files corresponding to the 1 arcsec aperture summed spectra from the MIRI observations. The columns correspond to wavelength in microns, flux in Jansky, and error in Jansky. 

The NIRSpec 1D spectra folder contains the ASCII files corresponding to the 1 arcsec aperture summed spectra from the NIRSpec observations. The columns correspond to wavelength in microns, flux in Jansky, and error in Jansky. 

The Solar Spectra folder contains the solar spectra flux used to reduce the data to produce the reflectance and emission spectra. The lbl text files are equivalent to the files with the same name without the lbl but also include the column information. The first column corresponds to the wavelength in microns, the second column to the total spectral irradiance in Jansky, the third column to the flux from the object in Jansky, the fourth column to the reflected sunlight in Jansky, and the fifth column to the thermal contribution in Jansky. The only column used for the solar reflectance used in the analysis corresponds to the fourth column. 

The ThermalModel folder contains the ASCII files with the data corresponding to the thermophysical model used to produce the reflectance (by subtracting the thermal contribution) and the emission (by dividing by the thermal contribution). The first column corresponds to the wavelength in microns, the second to the thermal flux in Jansky, the third to the smoothed thermal flux in Jansky, and the fourth column to the normalized thermal flux. Only column two corresponding to the thermal flux in Jansky was used in the analysis associated with the manuscript.