A) What is a proxy? What proxy is this study trying to find, and what are they doing dierently
compared to previous studies?
(b) Explain the meaning and use of the following acronyms: HELIOS, Exo-FMS, HAZMAT, NIRSpec.
(c) Make a sketch of the components used to model the planet (including the pressure-longitude
grid and the equatorial regions):
(d) Explain the components of Figure 1. Why was it included in the paper?
(e) Why is CH4 not a suitable proxy for the surface pressure?
(f) You detect CH3OH but non NH3 in the atmosphere of a sub-Neptune planet. What type of
surface does this planet have?