How to Characterize the Atmosphere of a Transiting Exoplanet
Posted in Science Space Physics

How to Characterize the Atmosphere of a Transiting Exoplanet

This tutorial is an introduction to techniques used to characterize the atmospheres of transiting exoplanets. We intend it to be a useful guide for the undergraduate, graduate student, or postdoctoral scholar who wants to begin research in this field, but who has no prior experience with transiting exoplanets. We begin with a discussion of the…

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Dependence of Biological Activity on the Surface Water Fraction of Planets
Posted in Science Space Physics

Dependence of Biological Activity on the Surface Water Fraction of Planets

One of the unique features associated with the Earth is that the fraction of its surface covered by land is comparable to that spanned by its oceans and other water bodies. Here, we investigate how extraterrestrial biospheres depend on the ratio of the surficial land and water fractions. We find that worlds that are overwhelmingly…

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Role of gaseous giants in the dynamical evolution of terrestrial planets and water delivery in the habitable zone
Posted in Science Space Physics

Role of gaseous giants in the dynamical evolution of terrestrial planets and water delivery in the habitable zone

In the present research, we study the effects of a single giant planet in the dynamical evolution of water-rich embryos and planetesimals, located beyond the snow line of systems around Sun-like stars – – in order to determine what kind of terrestrial-like planets could be formed in the habitable zone (hereafter HZ) of these systems.…

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Role of Gaseous Giants in the Dynamical Evolution of Terrestrial Planets and Water Delivery in the Habitable Zone
Posted in Science Space Physics

Role of Gaseous Giants in the Dynamical Evolution of Terrestrial Planets and Water Delivery in the Habitable Zone

In the present research, we study the effects of a single giant planet in the dynamical evolution of water-rich embryos and planetesimals, located beyond the snow line of systems around Sun-like stars, in order to determine what kind of terrestrial-like planets could be formed in the habitable zone (hereafter HZ) of these systems. To do…

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Idealized Wind-driven Ocean Circulations On Exoplanets
Posted in Science Space Physics

Idealized Wind-driven Ocean Circulations On Exoplanets

Motivated by the important role of the ocean in the Earth climate system, here we investigate possible scenarios of ocean circulations on exoplanets using a one-layer shallow water ocean model. Specifically, we investigate how planetary rotation rate, wind stress, fluid eddy viscosity and land structure (a closed basin vs. a reentrant channel) influence the pattern…

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Direct Imaging in Reflected Light: Characterization of Older, Temperate Exoplanets With 30-m Telescopes
Posted in Science Space Physics

Direct Imaging in Reflected Light: Characterization of Older, Temperate Exoplanets With 30-m Telescopes

Direct detection, also known as direct imaging, is a method for discovering and characterizing the atmospheres of planets at intermediate and wide separations. It is the only means of obtaining spectra of non-transiting exoplanets. Characterizing the atmospheres of planets in the These instruments could provide astrometry, photometry, and spectroscopy of an unprecedented sample of rocky…

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