Shoemaker-Levy 9 Archives

Maps of the wavelength dependent optical depth (on a log scale), with optical depths of 0.1, 1.0 and 10 indicated by dotted/solid/dashed line respectively. We compare the optical depth profiles for an R=10 km, ρ =2 g cm−3 , JWST Ice ver. A cometary composition impact at three different points in time, 1 year (A), 5 years (C), and 25 years (C - steady-state) after impact, with our unperturbed HD209458b reference model (D). To emphasise how the opacity of the atmosphere varies time we also include, on our steady-state opacity map, the 1 year (green), 5 year (blue), 25 year (red) and reference (orange) τ = 1 surfaces as light shading. Note the significant effect that the addition of cometary material has had on the optical depth, in particular how an optical depth of one is reached at lower pressures, averaging ∼ 10−2 bar at steady-state vs ∼ 10−1 bar in the unperturbed model, helping to explain the difference in the transmission spectra seen in Figure 8. -- astro-ph.EP

Comets and Asteroids, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Impact events, Jupiter, Status Report

The Impact Of Cometary Impacts On The Chemistry, Climate, And Spectra Of Hot Jupiter Atmospheres

by Keith CowingFebruary 9, 2024February 9, 2024

Impacts from icy and rocky bodies have helped shape the composition of solar system objects, for example the Earth-Moon system, or the recent impact of comet Shoemaker-Levy 9 with Jupiter. […]

Shoemaker-Levy 9

The Impact Of Cometary Impacts On The Chemistry, Climate, And Spectra Of Hot Jupiter Atmospheres

Tricorder Tech: What A Spacefaring Arctic Microbe Reveals About Life in Alien Oceans

Hot Spring Organism Breaks Record For Heat Tolerance Of Complex Life

Quantifying The Temperature-dependent Yields Of N2 And N2H4 Formation In Vacuum-ultraviolet-irradiated NH3 Ice

The Science Potential of Characterizing Gas Giant Exoplanets with HWO

Study Finds An Ancient History Of Water On Mars That Shifted Over Time