VIMS Archives

Left: Map of the plume’s brightness at 2.70 µm derived from an average of five VIMS cubes (V1511798376, V1511800181, V1511800741, V1511801493, and V1511802247). Note that this brightness is mostly due to reflected sunlight from Enceladus’ lit limb and the plume particles. The image is re-projected on a grid with 19 kilometers per pixel and oriented so that the plume points downward. Right: Map of the water-vapor column density derived from the same averaged image. Column densities were calculated using the average residual values and Equation 1. Note that regions of high column density are visible outside the region where the plume particles are bright, which provides evidence that this signal traces a different plume component. The red circles outline Enceladus and the red rectangles show the pixels used for the spectral analysis -- astro-ph.EP

Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Enceladus, Icy Worlds, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography

Constraining Time Variations in Enceladus’ Water-Vapor Plume With Near-Infrared Spectra from Cassini-VIMS

by Keith CowingMay 14, 2024May 14, 2024

Water vapor produces a series of diagnostic emission lines in the near infrared between 2.60 and 2.75 microns. The Visual and Infrared Mapping Spectrometer (VIMS) onboard the Cassini spacecraft detected […]

VIMS

Constraining Time Variations in Enceladus’ Water-Vapor Plume With Near-Infrared Spectra from Cassini-VIMS

Perseverance Astrobiology Rover – A Selfie While Working

NASA ROSES-25 Amendment 60: Due Date Extended for C.2 Solar System Science

Demographics Of Planet-forming Disks With The SKAO

Chemical Abundances of the Bioessential Elements C, O and S, and the Refractory Elements

Narrowband Radio Technosignature Search Toward 3I/ATLAS with FAST