Gas Tholin From H₂O:CH₄:N₂:CO₂:He (66.0:6.6:6.5:4.9:16.0) at 400 K
| Sample Type | Gas Tholin |
|---|---|
| Components | H₂O:CH₄:N₂:CO₂:He |
| Ratio | 66.0:6.6:6.5:4.9:16.0 |
| Substrate | KBr (for transmission measurements) and SiO₂ (for reflection measurements) |
| Reference Temperature | 400 K |
| Wavenumber (cm⁻¹) | 349.552 - 24999.5 |
| Wavelength (µm) | 0.4 - 28.608 |
Exoplanet gas tholin sample produced from water:methane:nitrogen:carbon dioxide:helium (H₂O:CH₄:N₂:CO₂:He with a 66.0:6.6:6.5:4.9:16.0 ratio) gas precursors by AC plasma discharge at 400 K temperature and 2 Torr pressure in the PHAZER experimental setup at Johns Hopkins University, Baltimore, MD, USA.
Tholin samples produced as spherical particles, mixed with potassium bromide (KBr) and pressed as pellets.
Tholin samples deposited on quartz (SiO₂) substrates.
The real (n) and imaginary (k) parts of the complex index of refraction were determined from optical measurements done at a temperature of 294 K and a pressure < 0.2 mbar, by vacuum transmission and reflection spectroscopy from 0.4 to 28.6 µm.
The transmission (T) spectra of exoplanet gas tholin samples mixed with potassium bromide at 0.10%, 0.43% and 4.10% in mass are provided in this dataset.
The reflection (R) spectra of exoplanet gas tholin samples deposited on quartz substrates and analyzed with incidence angles of 15° and 45° are provided in this dataset.
Error bars/uncertainties are provided in the downloadable data.
More information can be found in the publication and on the OCdb contributor's page.
Any use of this data should recognize the parent publication(s):
He, C., Radke, M., Moran, S. E., Hörst, S. M., Lewis, N. K., Moses, J. I., Marley, M. S., Batalha, N. E., Kempton, E. M.-R., Morley, C. V., Valenti, J. A. and Vuitton, V. (2024) 'Optical properties of organic haze analogues in water-rich exoplanet atmospheres observable with JWST', Nature Astronomy, 8, pp. 182-192.