Chemistry of Temperate Super-Earth and Mini-Neptune Atmospheric Hazes from Laboratory Experiments - Archive ouverte HAL
Article Dans Une Revue The Planetary Science Journal Année : 2020

Chemistry of Temperate Super-Earth and Mini-Neptune Atmospheric Hazes from Laboratory Experiments

Sarah Moran
  • Fonction : Auteur
Sarah Hörst
Chao He
Nikole Lewis
  • Fonction : Auteur
Julianne Moses
  • Fonction : Auteur
Nicole North
  • Fonction : Auteur
Joshua Sebree
  • Fonction : Auteur
Eliza M.-R. Kempton
  • Fonction : Auteur
Mark Marley
Caroline Morley
  • Fonction : Auteur
Jeff Valenti
  • Fonction : Auteur

Résumé

Very little experimental work has been done to explore the properties of photochemical hazes formed in atmospheres with very different compositions or temperatures than those of the outer solar system or of early Earth. With extrasolar planet discoveries now numbering thousands, this untapped phase space merits exploration. This study presents measured chemical properties of haze particles produced in laboratory analogs of exoplanet atmospheres. We used very high-resolution mass spectrometry to measure the chemical components of solid particles produced in atmospheric chamber experiments. Many complex molecular species with general chemical formulas C w H x N y O z were detected. We detect molecular formulas of prebiotic interest in the data, including those for the monosaccharide glyceraldehyde, a variety of amino acids and nucleotide bases, and several sugar derivatives. Additionally, the experimental exoplanetary haze analogs exhibit diverse solubility characteristics, which provide insight into the possibility of further chemical or physical alteration of photochemical hazes in super-Earth and mini-Neptune atmospheres. These exoplanet analog particles can help us better understand chemical atmospheric processes and suggest a possible source of in situ atmospheric prebiotic chemistry on distant worlds.
Fichier principal
Vignette du fichier
Moran20.pdf (9.75 Mo) Télécharger le fichier
Origine Publication financée par une institution

Dates et versions

hal-03085146 , version 1 (04-01-2021)

Identifiants

Citer

Sarah Moran, Sarah Hörst, Véronique Vuitton, Chao He, Nikole Lewis, et al.. Chemistry of Temperate Super-Earth and Mini-Neptune Atmospheric Hazes from Laboratory Experiments. The Planetary Science Journal, 2020, 1 (1), pp.17. ⟨10.3847/PSJ/ab8eae⟩. ⟨hal-03085146⟩
32 Consultations
41 Téléchargements

Altmetric

Partager

More