Extrasolar Planets


Instrumentation for the Detection and Characterization of Exoplanets

Instrumentation for the Detection and Characterization of Exoplanets

In no other field of astrophysics has the impact of new instrumentation been as substantial as in the domain of exoplanets.


Maximizing the ExoEarth Candidate Yield from a Future Direct Imaging Mission

Maximizing the ExoEarth Candidate Yield from a Future Direct Imaging Mission

ExoEarth yield is a critical science metric for future exoplanet imaging missions. Here we estimate exoEarth candidate yield using single visit completeness for a variety of mission design and astrophysical parameters.


A Hot Super-Neptune With an Earth-sized Low-mass Companion

A Hot Super-Neptune With an Earth-sized Low-mass Companion

We report on the characterization of the Kepler-101 planetary system, thanks to a combined DE-MCMC analysis of Kepler data and forty radial velocities obtained with the HARPS-N spectrograph. This system was previously validated by Rowe et al. (2014) and is composed of a hot super-Neptune, Kepler-101b, and an Earth-sized planet, Kepler-101c.


Optimal Measures for Characterizing Water-rich Super-Earths

Optimal Measures for Characterizing Water-rich Super-Earths

The detection and atmospheric characterization of super-Earths is one of the major frontiers of exoplanetary science. Currently, extensive efforts are underway to detect molecules, particularly H2O, in super-Earth atmospheres.


Water Vapor in the Spectrum of Extrasolar Planet HD 189733b: 2. The eclipse

Water Vapor in the Spectrum of Extrasolar Planet HD 189733b: 2. The eclipse

Spectroscopic observations of exoplanets are crucial to infer the composition and properties of their atmospheres. HD 189733b is one of the most extensively studied exoplanets and is a corner stone for hot Jupiter models.


First Evidence for Water Ice Clouds Outside Our Solar System

First Evidence for Water Ice Clouds Outside Our Solar System Video in Story

A team of scientists led by Carnegie's Jacqueline Faherty has discovered the first evidence of water ice clouds on an object outside of our own Solar System.


Effects of XUV Radiation on Circumbinary Planets

Effects of XUV Radiation on Circumbinary Planets

Several circumbinary planets have recently been discovered. The orbit of a planet around a binary stellar system poses several dynamic constraints.


Effects of Stellar Winds on the Magnetospheres and Potential Habitability of Exoplanets

Effects of Stellar Winds on the Magnetospheres and Potential Habitability of Exoplanets

The principle definition of habitability for exoplanets is whether they can sustain liquid water on their surfaces, i.e. that they orbit within the habitable zone.


Geology and Photometric Variation of Solar System Bodies with Minor Atmospheres: Implications for Solid Exoplanets

Geology and Photometric Variation of Solar System Bodies with Minor Atmospheres: Implications for Solid Exoplanets

A reasonable basis for future astronomical investigations of exoplanets lies in our best knowledge of the planets and satellites in the Solar System.


Searching for Habitable Super-Earth Exoplanets Around Nearby M-dwarfs

Searching for Habitable Super-Earth Exoplanets Around Nearby M-dwarfs

Detection and characterization of potentially habitable Earth-size extrasolar planets is one of the major goals of contemporary astronomy.


Stability of the Kepler-11 System and its Origin

Stability of the Kepler-11 System and its Origin

A significant fraction of Kepler systems are closely-packed, largely coplanar and circular. We study the stability of a 6-planet system, Kepler-11, to gain insights on the dynamics and formation history of such systems.


Disentangling Planets and Stellar Activity for Gliese 667C

Disentangling Planets and Stellar Activity for Gliese 667C

Gliese 667C is an M1.5V star with a multi-planet system, including planet candidates in the habitable zone (HZ).


How Can We Find Tiny Particles In Exoplanet Atmospheres?

How Can We Find Tiny Particles In Exoplanet Atmospheres?

It may seem like magic, but astronomers have worked out a scheme that will allow them to detect and measure particles ten times smaller than the width of a human hair, even at many light-years distance.


Methane, Carbon Monoxide, and Ammonia in Brown Dwarfs and Self-Luminous Giant Planets

Methane, Carbon Monoxide, and Ammonia in Brown Dwarfs and Self-Luminous Giant Planets

We address disequilibrum abundances of some simple molecules in the atmospheres of solar composition brown dwarfs and self-luminous extrasolar giant planets using a kinetics-based 1D atmospheric chemistry model.


Formation, Habitability, and Detection of Extrasolar Moons

Formation, Habitability, and Detection of Extrasolar Moons

The diversity and quantity of moons in the Solar System suggest a manifold population of natural satellites exist around extrasolar planets.


Surface Flux Patterns on Planets in Circumbinary Systems, and Potential for Photosynthesis

Surface Flux Patterns on Planets in Circumbinary Systems, and Potential for Photosynthesis

Recently, the Kepler Space Telescope has detected several planets in orbit around a close binary star system.


Debris Disk of Solar Analogue Tau Ceti

Debris Disk of Solar Analogue Tau Ceti

Tau Ceti is a nearby, mature G-type star very similar to our Sun, with a massive Kuiper Belt analogue (Greaves et al. 2004) and possible multiplanet system (Tuomi et al. 2013) that has been compared to our Solar System.


Using Radio Waves to Detect Exomoons

Using Radio Waves to Detect Exomoons

Scientists hunting for life beyond Earth have discovered more than 1,800 planets outside our solar system, or exoplanets, in recent years, but so far, no one has been able to confirm an exomoon.


Terrestrial Planet Formation in the Presence of Migrating Super-earths

Terrestrial Planet Formation in the Presence of Migrating Super-earths

Super-Earths with orbital periods less than 100 days are extremely abundant around Sun-like stars. It is unlikely that these planets formed at their current locations.


Characterizing the Parents: Exoplanets Around Cool Stars

Characterizing the Parents: Exoplanets Around Cool Stars

The large majority of stars in the Milky Way are late-type dwarfs, and the frequency of low-mass exoplanets in orbits around these late-type dwarfs appears to be high.



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