activity
20122025
most citedDirect Imaging Discovery of a `Super-Jupiter' Around the late B-Type Star Kappa And

204 citations · 362 across the 10 of their papers we have counts for

collaborators

11 papers

astro-ph.EP2025

Is ozone a reliable proxy for molecular oxygen? III. The impact of CH on the O-O relationship for Earth-like atmospheres

Thea Kozakis, João M. Mendonça, Lars A. Buchhave +1

In the search for life in the Universe, molecular oxygen (O) combined with a reducing species, such as methane (CH), is considered a promising disequilibrium biosignature.…

astro-ph.EP2025★ 2 cited

Is Ozone a Reliable Proxy for Molecular Oxygen? II. The impact of NO on the O-O relationship for Earth-like atmospheres

Thea Kozakis, João M. Mendonça, Lars A. Buchhave +1

Molecular oxygen (O2) will be an important molecule in the search for biosignatures in terrestrial planetary atmospheres in the coming decades. In particular, O2 combined with a re…

astro-ph.EP2024

Modeling Atmospheric Lines By the Exoplanet Community (MALBEC) version 1.0: A CUISINES radiative transfer intercomparison project

Geronimo L. Villanueva, Thomas J. Fauchez, Vincent Kofman +15

Radiative transfer (RT) models are critical in the interpretation of exoplanetary spectra, in simulating exoplanet climates and when designing the specifications of future flagship…

astro-ph.EP2022★ 35 cited

Is ozone a reliable proxy for molecular oxygen? I. The O2-O3 relationship for Earth-like atmospheres

Thea Kozakis, João M. Mendonça, Lars A. Buchhave

Molecular oxygen (O2) paired with a reducing gas is regarded as a promising biosignature pair for the atmospheric characterization of terrestrial exoplanets. In circumstances when…

astro-ph.EP2022★ 12 cited

H-dominated Atmosphere as an Indicator of Second-generation Rocky White Dwarf Exoplanets

Zifan Lin, Sara Seager, Sukrit Ranjan +2

Following the discovery of the first exoplanet candidate transiting a white dwarf (WD), a "white dwarf opportunity" for characterizing the atmospheres of terrestrial exoplanets aro…

astro-ph.EP2020★ 47 cited

The White Dwarf Opportunity: Robust Detections of Molecules in Earth-like Exoplanet Atmospheres with the James Webb Space Telescope

Lisa Kaltenegger, Ryan J. MacDonald, Thea Kozakis +4

The near-term search for life beyond the solar system currently focuses on transiting planets orbiting small M dwarfs, and the challenges of detecting signs of life in their atmosp…

astro-ph.EP2020★ 20 cited

High-resolution Spectra and Biosignatures of Earth-like Planets Transiting White Dwarfs

Thea Kozakis, Zifan Lin, Lisa Kaltenegger

With the first observations of debris disks as well as proposed planets around white dwarfs, the question of how rocky planets around such stellar remnants can be characterized and…

astro-ph.EP2020★ 2 cited

High resolution Spectra of Earth-Like Planets Orbiting Red Giant Host Stars

Thea Kozakis, Lisa Kaltenegger

In the near future we will have ground- and space-based telescopes that are designed to observe and characterize Earth-like planets. While attention is focused on exoplanets orbiti…

astro-ph.EP2019★ 13 cited

Atmospheres and UV Environments of Earth-like Planets Throughout Post-Main Sequence Evolution

Thea Kozakis, Lisa Kaltenegger

During the post-main sequence phase of stellar evolution the orbital distance of the habitable zone, which allows for liquid surface water on terrestrial planets, moves out past th…

astro-ph.EP2018★ 27 cited

UV Surface Environments and Atmospheres of Earth-like Planets Orbiting White Dwarfs

Thea Kozakis, Lisa Kaltenegger, D. W. Hoard

An Earth-like exoplanet orbiting a white dwarf would be exposed to different UV environments than Earth, influencing both its atmospheric photochemistry and UV surface environment.…

astro-ph.SR2012★ 204 cited

Direct Imaging Discovery of a `Super-Jupiter' Around the late B-Type Star Kappa And

J. Carson, C. Thalmann, M. Janson +52

We present the direct imaging discovery of an extrasolar planet, or possible low-mass brown dwarf, at a projected separation of 55 +/- 2 AU (1.058 +/- 0.007 arcsec) from the B9-typ…