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Stellar SEDs from 0.3 to 2.5 μm: Tracing the Stellar Locus and Searching for Color Outliers in the SDSS and 2MASS
The Sloan Digital Sky Survey (SDSS) and Two Micron All Sky Survey (2MASS) are rich resources for studying stellar astrophysics and the structure and formation history of the Galaxy. As new surveysExpand
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LSST Science Book, Version 2.0
A survey that can cover the sky in optical bands over wide fields to faint magnitudes with a fast cadence will enable many of the exciting science opportunities of the next decade. The Large SynopticExpand
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How Earth's atmosphere evolved to an oxic state: A status report
The evolution of the Earth’s atmosphere is essentially the story of atmospheric oxygen. Virtually every realm of the Earth sciences–biology, geology, geochemistry, oceanography and atmosphericExpand
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The loss of mass‐independent fractionation in sulfur due to a Palaeoproterozoic collapse of atmospheric methane
We use a 1-D numerical model to study the atmospheric photochemistry of oxygen, methane, and sulfur after the advent of oxygenic photosynthesis. We assume that mass-independent fractionation (MIF) ofExpand
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Nitrogen-enhanced greenhouse warming on early Earth
Early in Earth’s history, the Sun provided less energy to the Earth than it does today. However, the Earth was not permanently glaciated, an apparent contradiction known as the faint young SunExpand
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The Evolution of Solar Flux from 0.1 nm to 160 μm: Quantitative Estimates for Planetary Studies
Understanding changes in the solar flux over geologic time is vital for understanding the evolution of planetary atmospheres because it affects atmospheric escape and chemistry, as well as climate.Expand
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A bistable organic-rich atmosphere on the Neoarchaean Earth
It has been hypothesized that, before widespread oxygenation about 2.45 billion years ago, the Earth’s atmosphere contained an organic haze similar to that on Titan. However, these theoreticalExpand
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Biogeochemical modelling of the rise in atmospheric oxygen
Understanding the evolution of atmospheric molecular oxygen levels is a fundamental unsolved problem in Earth’s history. We develop a quantitative biogeochemical model that simulates theExpand
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Pathways for Neoarchean pyrite formation constrained by mass-independent sulfur isotopes
It is generally thought that the sulfate reduction metabolism is ancient and would have been established well before the Neoarchean. It is puzzling, therefore, that the sulfur isotope record of theExpand
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Atmospheric origins of perchlorate on Mars and in the Atacama
[1] Isotopic studies indicate that natural perchlorate is produced on Earth in arid environments by the oxidation of chlorine species through pathways involving ozone or its photochemical products.Expand
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