Habitable Zones & Global Climate

Optimizing Ground-based Observations of O2 in Earth Analogs

Optimizing Ground-based Observations of O2 in Earth Analogs

We present the result of calculations to optimize the search for molecular oxygen (O2) in Earth analogs transiting around nearby, low-mass stars using ground-based, high-resolution, Doppler shift techniques.

Habitable Zones & Global Climate

The Pressure and Temperature Limits of Likely Rocky Exoplanets

The Pressure and Temperature Limits of Likely Rocky Exoplanets

The interior composition of exoplanets is not observable, limiting our direct knowledge of their structure, composition, and dynamics.

Astrochemistry

Extension of the HCOOH and CO2 Solid-state Reaction Network During The CO Freeze-out Stage: Inclusion of H2CO

Extension of the HCOOH and CO2 Solid-state Reaction Network During The CO Freeze-out Stage: Inclusion of H2CO

Formic acid (HCOOH) and carbon dioxide (CO2) are simple species that have been detected in the interstellar medium.

Habitable Zones & Global Climate

VPLanet: The Virtual Planet Simulator

VPLanet: The Virtual Planet Simulator

We describe a software package called VPLanet that simulates fundamental aspects of planetary system evolution over Gyr timescales, with a focus on investigating habitable worlds.

Habitable Zones & Global Climate

Kepler-62f: Kepler's First Small Planet in the Habitable Zone, but Is It Real?

Kepler-62f: Kepler's First Small Planet in the Habitable Zone, but Is It Real?

Kepler-62f is the first exoplanet small enough to plausibly have a rocky composition orbiting within the habitable zone (HZ) discovered by the Kepler Mission.

Extrasolar Planets

Discovery and Characterization of Kepler-36b

Discovery and Characterization of Kepler-36b

We describe the circumstances that led to the discovery of Kepler-36b, and the subsequent characterization of its host planetary system.

Extrasolar Planets

Validation of a Temperate Fourth Planet in the K2-133 Multi-planet System

Validation of a Temperate Fourth Planet in the K2-133 Multi-planet System

We present follow-up observations of the K2-133 multi-planet system. Previously, we announced that K2-133 contained three super-Earths orbiting an M1.5V host star - with tentative evidence of a fourth outer-planet orbiting at the edge of the temperate zone.

Astrochemistry

Solid-state Formation In A H3CCCH + OH Cocktail Under Dark Cloud Conditions

Solid-state Formation In A H3CCCH + OH Cocktail Under Dark Cloud Conditions

A number of recent experimental studies have shown that solid-state complex organic molecules (COMs) can form under conditions that are relevant to the CO freeze-out stage in dense clouds.

Space Weather

Impact of Space Weather on Climate and Habitability of Terrestrial Type Exoplanets

Impact of Space Weather on Climate and Habitability of Terrestrial Type Exoplanets

The current progress in the detection of terrestrial type exoplanets has opened a new avenue in the characterization of exoplanetary atmospheres and in the search for biosignatures of life with the upcoming ground-based and space missions.

Astronomy

Detection Limits of Exoplanetary Atmospheres With 2-m Class Telescopes

Detection Limits of Exoplanetary Atmospheres With 2-m Class Telescopes

Transmission spectroscopy is an important technique to probe the atmospheres of exoplanets.

Habitable Zones & Global Climate

General Circulation Model for Simulations of Diverse Planetary Atmospheres: Exoplanet GJ 1132b

General Circulation Model for Simulations of Diverse Planetary Atmospheres: Exoplanet GJ 1132b

Exploring diverse planetary atmospheres requires modeling tools that are both accurate and flexible.

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