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The population of ultra-hot Jupiters (UHJs) provide unique opportunities to probe the extreme formation and evolutionary pathways in exoplanets. Owing to their very high temperatures and inflated atmospheres, UHJs are among the most…

Earth and Planetary Astrophysics · Physics 2025-10-14 Suman Saha , James S. Jenkins

The classical picture of our Solar System being the archetypal outcome of planet formation has been rendered obsolete by the astonishing diversity of extrasolar-system architectures. From rare hot-Jupiters to abundant super-Earths and…

Earth and Planetary Astrophysics · Physics 2025-01-17 A. Sánchez-López , Ana P. Millán

Thousands of transiting exoplanets have already been detected orbiting a wide range of host stars, including the first planets that could potentially be similar to Earth. The upcoming Extremely Large Telescopes and the James Webb Space…

Earth and Planetary Astrophysics · Physics 2021-03-10 Lisa Kaltenegger , Zifan Lin

Recent results from the Kepler mission indicate that super-Earths (planets with masses between 1-10 times that of the Earth) are the most common kind of planet around nearby Sun-like stars. These planets have no direct solar system…

Terrestrial planets in the solar system, such as the Earth, are oxygen-rich, with silicates and iron being the most common minerals in their interiors. However, the true chemical diversity of rocky planets orbiting other stars is yet…

Earth and Planetary Astrophysics · Physics 2015-06-11 Nikku Madhusudhan , Kanani K. M. Lee , Olivier Mousis

The characterization of exoplanet atmospheres has proven to be successful using high-resolution spectroscopy. Phase curve observations of hot/ultra-hot Jupiters can reveal their compositions and thermal structures, thereby allowing the…

Earth and Planetary Astrophysics · Physics 2023-09-01 Swaetha Ramkumar , Neale P. Gibson , Stevanus K. Nugroho , Cathal Maguire , Mark Fortune

Until recently, infrared observations of exoplanetary atmospheres have typically been interpreted using models that assumed solar elemental abundances. With the chemical composition fixed, attempts have been made to classify hot Jupiter…

Earth and Planetary Astrophysics · Physics 2015-06-11 Nikku Madhusudhan

Most known terrestrial planets orbit small stars with radii less than 60% that of the Sun. Theoretical models predict that these planets are more vulnerable to atmospheric loss than their counterparts orbiting Sun-like stars. To determine…

In this study, we treat Earth as an exoplanet and investigate our home planet by means of a potential future mid-infrared (MIR) space mission called the Large Interferometer For Exoplanets (LIFE). We combine thermal spectra from an…

Earth and Planetary Astrophysics · Physics 2024-05-14 Jean-Noël Mettler , Björn S. Konrad , Sascha P. Quanz , Ravit Helled

In this study, we aim to constrain the atmospheric composition of GJ 1214 b using all available transits observed with the upgraded CRIRES+ spectrograph at the VLT by searching for the signatures of water vapour, methane, and carbon…

Earth and Planetary Astrophysics · Physics 2026-02-20 A. Peláez-Torres , A. Sánchez-López , C. Jiang , E. Pallé , J. Orell-Miquel , M. López-Puertas , L. T. Parker , H. Diamond-Lowe

We probe the structure and composition of the atmospheres of 5 hot Jupiter exoplanets using the Hubble Space Telescope Wide Field Camera 3 (WFC3) instrument. We use the G141 grism (1.1-1.7 $\mu$m) to study TrES-2b, TrES-4b, and CoRoT-1b in…

Earth and Planetary Astrophysics · Physics 2015-06-19 Sukrit Ranjan , David Charbonneau , Jean-Michel Désert , Nikku Madhusudhan , Drake Deming , Ashlee Wilkins , Avi M. Mandell

Most of the exoplanets detected up to now transit in front of their host stars, allowing for the generation of transmission spectra; the study of exoplanet atmospheres relies heavily upon accurate analysis of these spectra. Recent…

Multi-wavelength transit and secondary-eclipse light-curve observations are some of the most powerful techniques to probe the thermo-chemical properties of exoplanets. Although the large planet-to-star brightness contrast and few available…

Earth and Planetary Astrophysics · Physics 2016-04-06 Patricio E. Cubillos

The advent of high-resolution spectroscopy as a method for exoplanet atmospheric characterization has expanded our capability to study non-transiting planets, increasing the number of planets accessible for observation. Many of the most…

Earth and Planetary Astrophysics · Physics 2021-12-22 Isaac Malsky , Emily Rauscher , Eliza M. R. Kempton , Michael Roman , Deryl Long , Caleb K. Harada

Water absorption is identified in the atmosphere of HD209458b by comparing models for the planet's transmitted spectrum to recent, multi-wavelength, eclipse-depth measurements (from 0.3 to 1 microns) published by Knutson et al. (2007). A…

Astrophysics · Physics 2014-11-18 T. S. Barman

Terrestrial planets have been found orbiting Sun-like stars with extremely short periods --- some as short as 4 hours. These "ultra-short-period planets" or "hot Earths" are so strongly irradiated that any initial H/He atmosphere has…

Earth and Planetary Astrophysics · Physics 2019-10-02 Fei Dai , Kento Masuda , Joshua N. Winn , Li Zeng

The super-Earth LHS 1140 b is an interesting target for atmospheric observations since it is close to the habitable zone of its star and falls in the gap of the radius distribution of small exoplanets, in the region thought to correspond to…

Earth and Planetary Astrophysics · Physics 2024-04-01 Alfredo Biagini , Gianluca Cracchiolo , Antonino Petralia , Jesús Maldonado , Claudia Di Maio , Giuseppina Micela

High-resolution Doppler spectroscopy provides an avenue to study the atmosphere of both transiting and non-transiting planets. This powerful method has also yielded some of the most robust atmospheric detections to date. Currently,…

Earth and Planetary Astrophysics · Physics 2024-04-09 S. M. Matthews , C. A. Watson , E. J. W. de Mooij , T. R. Marsh , M. Brogi , S. R. Merritt , K. W. Smith , D. Steeghs

Exoplanet research focusing on the characterization of super-Earths is currently limited to those handful targets orbiting bright stars that are amenable to detailed study. This Letter proposes to look at alternative avenues to probe the…

Earth and Planetary Astrophysics · Physics 2015-06-19 Brice-Olivier Demory

Proxima Centauri b provides an unprecedented opportunity to understand the evolution and nature of terrestrial planets orbiting M dwarfs. Although Proxima Cen b orbits within its star's habitable zone, multiple plausible evolutionary paths…