Products and Models for "Volatile-to-sulfur Ratios Can Recover a Gas Giant's Accretion History"

<p>The newfound ability to detect SO2 in exoplanet atmospheres and presents an opportunity to measure sulfur abundances and so directly test between competing modes of planet formation.&nbsp; To explore the detectability of SO2 in<br> transmission spectra and its ability to diagnose planet formation, we present a grid of atmospheric photochemical models and corresponding synthetic spectra for WASP-39b (where SO2 has recently been detected).&nbsp; Our grid contains 2,662 model atmospheres: spanning 1-100x the solar abundance ratios of C, O, and S (11^3 combinations of abundances) and for two thermal profiles: corresponding to the morning and evening terminators.&nbsp; We also provide 3,993 synthetic spectra: one for each of the morning and evening terminators, plus a set of spectra that are the<br> mean of the morning and evening spectra (corresponding to the transmission spectrum that would be observed during transit).</p> <p>If you use these files, please cite Crossfield (2023).</p> <p>&nbsp;</p> <p>The transmission spectra are simple two-column CSV files -- wavelength in microns, and transit depth.&nbsp; The model atmospheres are in Python pickle format, and are the standard output of the VULCAN photochemistry code.&nbsp;&nbsp; The several data sets are:</p> <ul> <li>wasp39_mean_spectra.tar.gz -- average terminator spectra. <strong>Use this for comparing to full-transit observations.</strong></li> <li>wasp39_morning_spectra.tar.gz -- spectra corresponding to the morning-terminator models.</li> <li>wasp39_evening_spectra.tar.gz -- spectra corresponding to the evening-terminator models.</li> <li>wasp39_evening_profiles.tar.gz -- model atmospheres and chemical profiles for the evening-terminator thermal profile.</li> <li>wasp39_morning_profiles.tar.gz -- model atmospheres and chemical profiles for the morning-terminator thermal profile.</li> </ul> <p>All filenames are of the form</p> <p>wasp39b_tsai23-Kzz_SNCHO_10x_z83_C7.5_N10.0_O100.0_S18.0__morn_transmission.csv</p> <ul> <li>wasp39b -- planet name</li> <li>tsai23-Kzz -- using Kzz (eddy diffusion) profile from Tsai et al. (2023)</li> <li>SNCHO -- using the VULCAN code&#39;s SNCHO chemistry network</li> <li>10x -- all elements (aside from SNCHO) are set to 10x Solar abundances</li> <li>z83 -- zenith angle set to 83 degrees</li> <li>C7.5 -- the scaling of the Carbon abundance relative to Solar; in this case, 7.5x</li> <li>N10.0 -- the scaling of the Nitrogren abundance relative to Solar (10x for all models)</li> <li>O100.0 -- the scaling of the Oxygen abundance relative to Solar; in this case, 100x</li> <li>S18.0 -- the scaling of the Sulfur abundance relative to Solar; in this case, 18x</li> <li>morn -- morning terminator thermal profile, from Tsai et al. (2023). Options are &#39;morn&#39;, &#39;eve&#39;, &#39;morn-eve-mean&#39;</li> <li>transmission.csv -- indicates a transmission spectrum file.&nbsp; Other option is &#39;vulcan-output.vul&#39;</li> </ul> <p>&nbsp;</p>