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27 papers · 1 filter
Modeling Repeated M-dwarf Flaring at an Earth-like Planet in the Habitable Zone: I. Atmospheric Effects for an Unmagnetized Planet
Matt A. Tilley, Antigona Segura, Victoria S. Meadows +2
Understanding the impact of active M-dwarf stars on the atmospheric equilibrium and surface conditions of a habitable zone Earth-like planet is key to assessing M dwarf planet habi…
Planet-Planet Occultations in TRAPPIST-1 and Other Exoplanet Systems
Rodrigo Luger, Jacob Lustig-Yaeger, Eric Agol
We explore the occurrence and detectability of planet-planet occultations (PPOs) in exoplanet systems. These are events during which a planet occults the disk of another planet in…
Organic Haze as a Biosignature in Anoxic Earth-like Atmospheres
Giada N. Arney, Shawn D. Domagal-Goldman, Victoria S. Meadows
Early Earth may have hosted a biologically-mediated global organic haze during the Archean eon (3.8-2.5 billion years ago). This haze would have significantly impacted multiple asp…
An Equation for Predicting Binding Strengths of Metal Cations to Protein of Human Serum Transferrin
Huifang Xu, Yifeng Wang
Because human serum transferrin (hTF) exists freely in serum, it is a potential target for cancer treatment drugs and in curing iron-overloaded conditions in patients via long-term…
Finding the Needles in the Haystacks: High-Fidelity Models of the Modern and Archean Solar System for Simulating Exoplanet Observations
Aki Roberge, Maxime J. Rizzo, Andrew P. Lincowski +10
We present two state-of-the-art models of the solar system, one corresponding to the present day and one to the Archean Eon 3.5 billion years ago. Each model contains spatial and s…
Towards Space-like Photometric Precision from the Ground with Beam-Shaping Diffusers
Gudmundur Stefansson, Suvrath Mahadevan, Leslie Hebb +21
We demonstrate a path to hitherto unachievable differential photometric precisions from the ground, both in the optical and near-infrared (NIR), using custom-fabricated beam-shapin…