279 citations · 1.7k across the 25 of their papers we have counts for
22 papers · 1 filter
Fully fluorinated non-carbon compounds NF3 and SF6 as ideal technosignature gases
Sara Seager, Janusz J. Petkowski, Jingcheng Huang +3
Waste gas products from technological civilizations may accumulate in an exoplanet atmosphere to detectable levels. We propose nitrogen trifluoride (NF3) and sulfur hexafluoride (S…
Venus' Atmospheric Chemistry and Cloud Characteristics Are Compatible with Venusian Life
William Bains, Janusz J. Petkowski, Sara Seager
Venus is Earth's sister planet, with similar mass and density but an uninhabitably hot surface, an atmosphere with a water activity 50-100 times lower than anywhere on Earths' surf…
Large Uncertainties in the Thermodynamics of Phosphorus (III) Oxide (PO) Have Significant Implications for Phosphorus Species in Planetary Atmospheres
William Bains, Matthew A. Pasek, Sukrit Ranjan +3
Phosphorus (III) oxide (PO) has been suggested to be a major component of the gas phase phosphorus chemistry in the atmospheres of gas giant planets and of Venus. However,…
Constraints on the production of phosphine by Venusian volcanoes
William Bains, Oliver Shorttle, Sukrit Ranjan +4
The initial reports of the presence of phosphine in the cloud decks of Venus has led to the suggestion that volcanism was the source of phosphine, through volcanic phosphides eject…
Photochemical Runaway in Exoplanet Atmospheres: Implications for Biosignatures
Sukrit Ranjan, Sara Seager, Zhuchang Zhan +5
About 2.5 billion years ago, microbes learned to harness plentiful solar energy to reduce CO with HO, extracting energy and producing O as waste. O production from…
Production of Ammonia Makes Venusian Clouds Habitable and Explains Observed Cloud-Level Chemical Anomalies
William Bains, Janusz J. Petkowski, Paul B. Rimmer +1
The atmosphere of Venus remains mysterious, with many outstanding chemical connundra. These include: the unexpected presence of ~10 ppm O2 in the cloud layers; an unknown compositi…