The ocean worlds science case for the Pollux spectropolarimeter

Fuente: arXiv
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Auteurs principaux: Hue, Vincent, Benmahi, Bilal, Barthelemy, Mathieu, Becker, Tracy M., Bouret, Jean-Claude, Cartwright, Richard J., Chaufray, Jean-Yves, Fossati, Luca, Giono, Gabriel, Poch, Olivier, Raut, Ujjwal, Roth, Lorenz
Format: Preprint
Publié: 2026
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_version_ 1866911506772262912
author Hue, Vincent
Benmahi, Bilal
Barthelemy, Mathieu
Becker, Tracy M.
Bouret, Jean-Claude
Cartwright, Richard J.
Chaufray, Jean-Yves
Fossati, Luca
Giono, Gabriel
Poch, Olivier
Raut, Ujjwal
Roth, Lorenz
author_facet Hue, Vincent
Benmahi, Bilal
Barthelemy, Mathieu
Becker, Tracy M.
Bouret, Jean-Claude
Cartwright, Richard J.
Chaufray, Jean-Yves
Fossati, Luca
Giono, Gabriel
Poch, Olivier
Raut, Ujjwal
Roth, Lorenz
contents Pollux is a candidate European instrument contribution to the Habitable Worlds Observatory (HWO), designed to advance our understanding of the formation and evolution of cosmic structures in the universe, and specifically search signs of life on extrasolar planets. This high-resolution spectrograph (R\,$>$\,40,000) with polarimetric capabilities offers nearly continuous and simultaneous coverage from the FUV ($\sim$100\,nm) to the NIR ($\sim$1.9\,$\micron$), making it a versatile tool for a wide range of scientific investigations from solar system studies to cosmology. Several Solar System ocean worlds have been the focal point of the scientific community to understand the conditions of their internal saline oceans, as well as the possible emergence of life beyond Earth. The ocean world science case will leverage Pollux's UV spectropolarimetric capabilities to investigate surface reflectance and composition, characterize airglow emissions in the environments of giant-planet moons, as well as constrain the microphysical properties of atmospheric aerosols.
format Preprint
id arxiv_https___arxiv_org_abs_2603_11112
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle The ocean worlds science case for the Pollux spectropolarimeter
Hue, Vincent
Benmahi, Bilal
Barthelemy, Mathieu
Becker, Tracy M.
Bouret, Jean-Claude
Cartwright, Richard J.
Chaufray, Jean-Yves
Fossati, Luca
Giono, Gabriel
Poch, Olivier
Raut, Ujjwal
Roth, Lorenz
Instrumentation and Methods for Astrophysics
Earth and Planetary Astrophysics
Pollux is a candidate European instrument contribution to the Habitable Worlds Observatory (HWO), designed to advance our understanding of the formation and evolution of cosmic structures in the universe, and specifically search signs of life on extrasolar planets. This high-resolution spectrograph (R\,$>$\,40,000) with polarimetric capabilities offers nearly continuous and simultaneous coverage from the FUV ($\sim$100\,nm) to the NIR ($\sim$1.9\,$\micron$), making it a versatile tool for a wide range of scientific investigations from solar system studies to cosmology. Several Solar System ocean worlds have been the focal point of the scientific community to understand the conditions of their internal saline oceans, as well as the possible emergence of life beyond Earth. The ocean world science case will leverage Pollux's UV spectropolarimetric capabilities to investigate surface reflectance and composition, characterize airglow emissions in the environments of giant-planet moons, as well as constrain the microphysical properties of atmospheric aerosols.
title The ocean worlds science case for the Pollux spectropolarimeter
topic Instrumentation and Methods for Astrophysics
Earth and Planetary Astrophysics
url https://arxiv.org/abs/2603.11112