activity
20192026
most citedUnderstanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b: I. Cloud and chemistry mapping

74 citations · 335 across the 15 of their papers we have counts for

collaborators

17 papers

astro-ph.EP2026

The First Hubble Detection of a Secondary Eclipse from a Rocky Exoplanet: the 5.4-hour planet TOI-2431 b

Sebastian Zieba, Billy Edwards, Samuel N. Quinn +18

We present an HST/WFC3 G141 phase-curve observation of the ultra-short-period rocky planet TOI-2431 b and detect its secondary eclipse in the near infrared. Combined with the TESS…

astro-ph.EP2026

Thermal Evolution of Lava Planets Across System Ages: Predictions for Hell of a Survey

Mariana Sastre, Tim Lichtenberg, Lisa Dang +22

Ultra-short-period (USP) rocky exoplanets can have dayside temperatures high enough to maintain permanent magma oceans, sitting at the intersection of interior geophysics and atmos…

astro-ph.EP2026

SCoRE: the Surface Composition of Rocky Exoplanets

Leon Sereinig, Oliver Herbort

Context. The crust composition of rocky exoplanets with a substantial atmosphere can not be observed directly. However, recent developments are starting to allow for the observatio…

astro-ph.EP2025★ 4 cited

Proto-planetary disk composition-dependent element volatility in the context of rocky planet formation

Rob J. Spaargaren, Oliver Herbort, Haiyang S. Wang +2

The compositions of the Solar System terrestrial bodies are fractionated from that of the Sun, where elemental depletions in the bulk rocky bodies correlate with element volatility…

astro-ph.EP2025★ 2 cited

The atmospheres of rocky exoplanets III. Using atmospheric spectra to constrain surface rock composition

Oliver Herbort, Leon Sereinig

Context. The crust composition of rocky exoplanets with a substantial atmosphere can not be observed directly. However, recent developments start to allow the observation and chara…

astro-ph.EP2025★ 12 cited

Habitable Zone and Atmosphere Retention Distance (HaZARD) Stellar-evolution-dependent loss models of secondary atmospheres

Gwenaël Van Looveren, Sudeshna Boro Saikia, Oliver Herbort +4

A major open question in exoplanet research is whether secondary atmospheres are rare around Earth-sized rocky exoplanets. In this work we determine the distance at which an Earth-…

astro-ph.EP2024★ 2 cited

Reliable Detections of Atmospheres on Rocky Exoplanets with Photometric JWST Phase Curves

Mark Hammond, Claire Marie Guimond, Tim Lichtenberg +9

The prevalence of atmospheres on rocky planets is one of the major questions in exoplanet astronomy, but there are currently no published unambiguous detections of atmospheres on a…

astro-ph.EP2024

Habitability constraints by nutrient availability in atmospheres of rocky exoplanets

Oliver Herbort, Peter Woitke, Christiane Helling +1

Life as we know it requires the presence of liquid water and the availability of nutrients, which are mainly based on the elements C, H, N, O, P, and S (CHNOPS) and trace metal mic…

astro-ph.EP2023★ 14 cited

The sulphur species in hot rocky exoplanet atmospheres

L. J. Janssen, P. Woitke, O. Herbort +4

The first JWST observations of hot Jupiters showed an unexpected detection of SO2 in their hydrogen-rich atmospheres. We investigate how much sulphur can be expected in the atmosph…

astro-ph.EP2022★ 15 cited

Modification of the radioactive heat budget of Earth-like exoplanets by the loss of primordial atmospheres

N. Erkaev, M. Scherf, O. Herbort +6

The initial abundance of radioactive heat producing isotopes in the interior of a terrestrial planet are important drivers of its thermal evolution and the related tectonics and po…

astro-ph.EP2022★ 38 cited

Exoplanet weather and climate regimes with clouds and thermal ionospheres: A model grid study in support of large-scale observational campaigns

Christiane Helling, Dominic Samra, David Lewis +7

With observational efforts moving from the discovery into the characterisation mode, systematic campaigns that cover large ranges of global stellar and planetary parameters will be…

astro-ph.SR2022★ 19 cited

The CARMENES search for exoplanets around M dwarfs. Rotational variation in activity indicators of Ross 318, YZ CMi, TYC 3529-1437-1, and EV Lac

P. Schöfer, S. V. Jeffers, A. Reiners +22

The CARMENES instrument is searching for periodic radial-velocity (RV) variations of M dwarfs, which are induced by orbiting planets. However, there are other potential sources of…

astro-ph.EP2021★ 16 cited

The Atmospheres of Rocky Exoplanets II. Influence of surface composition on the diversity of cloud condensates

Oliver Herbort, Peter Woitke, Christiane Helling +1

Clouds are an integral part of planetary atmospheres, with most planets hosting clouds. The understanding of not only the formation, but also the composition of clouds is crucial t…

astro-ph.EP2021★ 62 cited

Cloud property trends in hot and ultra-hot giant gas planets (WASP-43b, WASP-103b, WASP-121b, HAT-P-7b, and WASP-18b)

Ch. Helling, D. Lewis, D. Samra +8

Ultra-hot Jupiters are the hottest exoplanets discovered so far. Observations begin to provide insight into the composition of their extended atmospheres and their chemical day/nig…

astro-ph.EP2020★ 27 cited

Coexistence of CH4, CO2 and H2O in exoplanet atmospheres

P. Woitke, O. Herbort, Ch. Helling +4

We propose a classification of exoplanet atmospheres based on their H, C, O, N element abundances below about 600 K. Chemical equilibrium models were run for all combinations of H,…

astro-ph.EP2020★ 50 cited

The Atmospheres of Rocky Exoplanets I. Outgassing of Common Rock and the Stability of Liquid Water

Oliver Herbort, Peter Woitke, Christiane Helling +1

Little is known about the interaction between atmospheres and crusts of exoplanets so far, but future space missions and ground-based instruments are expected to detect molecular f…

astro-ph.EP2019★ 74 cited

Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b: I. Cloud and chemistry mapping

Ch. Helling, N. Iro, L. Corrales +10

Ultra-hot Jupiters have recently attracted interest from observers and theoreticians alike, as they provide observationally accessible test cases. We apply a hierarchical modelling…