@article{303144f720594db29ef495b969704f2d,
title = "Chemistry of temperate super-earth and mini-neptune atmospheric hazes from laboratory experiments",
abstract = "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 CwHxNyOz 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.",
author = "Moran, {Sarah E.} and H{\"o}rst, {Sarah M.} and V{\'e}ronique Vuitton and Chao He and Lewis, {Nikole K.} and Laur{\`e}ne Flandinet and Moses, {Julianne I.} and Nicole North and Orthous-Daunay, {Fran{\c c}ois R{\'e}gis} and Joshua Sebree and C{\'e}dric Wolters and Kempton, {Eliza M.R.} and Marley, {Mark S.} and Morley, {Caroline V.} and Valenti, {Jeff A.}",
note = "Funding Information: S.E.M. was supported by NASA Earth and Space Science Fellowship grant 80NSSC18K1109. Portions of this study were supported by NASA Exoplanets Research Program grant NNX16AB45G. C.H. was supported by the Morton K. and Jane Blaustein Foundation. This work is supported by the French National Research Agency in the framework of the Investissements d'Avenir program (ANR-15-IDEX-02), through the funding of the {"}Origin of Life{"} project of the Univ. Grenoble-Alpes and the French Space Agency (CNES) under their Exobiology and Solar System programs. C?dric Wolters acknowledges a PhD fellowship from CNES/ANR (ANR-16-CE29-0015 2016-2021) S.E.M. also thanks the entire H?rst PHAZER lab group and the STARGATE collaboration for their useful discussion and support on this work, as well as two anonymous referees whose careful review improved this manuscript. Funding Information: S.E.M. was supported by NASA Earth and Space Science Fellowship grant 80NSSC18K1109. Portions of this study were supported by NASA Exoplanets Research Program grant NNX16AB45G. C.H. was supported by the Morton K. and Jane Blaustein Foundation. This work is supported by the French National Research Agency in the framework of the Investissements d{\textquoteright}Avenir program (ANR-15-IDEX-02), through the funding of the “Origin of Life” project of the Univ. Grenoble-Alpes and the French Space Agency (CNES) under their Exobiology and Solar System programs. C{\'e}dric Wolters acknowledges a PhD fellowship from CNES/ANR (ANR-16-CE29-0015 2016-2021) S.E.M. also thanks the entire H{\"o}rst PHAZER lab group and the STARGATE collaboration for their useful discussion and support on this work, as well as two anonymous referees whose careful review improved this manuscript. Publisher Copyright: {\textcopyright} 2020. The Author(s).",
year = "2020",
month = jun,
doi = "10.3847/PSJ/ab8eae",
language = "English (US)",
volume = "1",
journal = "Planetary Science Journal",
issn = "2632-3338",
publisher = "IOP Publishing Ltd.",
number = "1",
}