Surface pressure impact on nitrogen-dominated USP super-Earth atmospheres
arXiv:2304.08690 · doi:10.1093/mnras/stad1034
Abstract
In this paper, we compare the chemistry and the emission spectra of nitrogen-dominated cool, warm, and hot ultra-short-period (USP) super-Earth atmospheres in and out of chemical equilibrium at various surface pressure scenarios ranging from 0.1 to 10 bar. We link the one-dimensional VULCAN chemical kinetic code, in which thermochemical kinetic and vertical transport and photochemistry are taken into account, to the one-dimensional radiative transfer model, PETITRADTRANS, to predict the emission spectra of these planets. The radiative-convective temperature-pressure profiles were computed with the HELIOS code. Then, using PANDEXO noise simulator, we explore the observability of the differences produced by disequilibrium processes with the JWST. Our grids show how different surface pressures can significantly affect the temperature profiles, the atmospheric abundances, and consequently the emission spectra of these planets. We find that the divergences due to disequilibrium processes would be possible to observe in cooler planets by targeting HCN, C2H4, and CO, and in warmer planets by targeting CH4 with HCN, using the NIRSpec and MIRI LRS JWST instruments. These species are also found to be sensitive indicators of the existence of surfaces on nitrogen-dominated USP super-Earths, providing information regarding the thickness of these atmospheres.
arXiv comment12 pages
References in corpus (65)
- The Transiting Exoplanet Survey Satellite
- A new extensive library of PHOENIX stellar atmospheres and synthetic spectra
- Probabilistic Forecasting of the Masses and Radii of Other Worlds
- petitRADTRANS: a Python radiative transfer package for exoplanet characterization and retrieval
- KEPLER's First Rocky Planet: Kepler-10b
- Disequilibrium Carbon, Oxygen, and Nitrogen Chemistry in the Atmospheres of HD 189733b and HD 209458b
- Mass-Radius Relation for Rocky Planets based on PREM
- Characterizing transiting exoplanet atmospheres with JWST
- Albedo and Reflection Spectra of Extrasolar Giant Planets
- Radial velocity planets de-aliased. A new, short period for Super-Earth 55 Cnc e
- PandExo: A Community Tool for Transiting Exoplanet Science with JWST & HST
- A map of the large day-night temperature gradient of a super-Earth exoplanet
- Five Planets Orbiting 55 Cancri
- A chemical model for the atmosphere of hot Jupiters
- A Study of the Shortest-Period Planets Found With Kepler
- Absence of a thick atmosphere on the terrestrial exoplanet LHS 3844b
- Detection of an atmosphere around the super-Earth 55 Cancri e
- An Earth-sized planet with an Earth-like density
- VULCAN: an Open-Source, Validated Chemical Kinetics Python Code for Exoplanetary Atmospheres
- Chemistry of Silicate Atmospheres of Evaporating Super-Earths
- Exoplanetary Atmospheres - Chemistry, Formation Conditions, and Habitability
- Detection of a transit of the super-Earth 55 Cnc e with Warm Spitzer
- HELIOS-K: An Ultrafast, Open-source Opacity Calculator for Radiative Transfer
- HELIOS: An Open-source, GPU-accelerated Radiative Transfer Code For Self-consistent Exoplanetary Atmospheres
- Effect of UV Radiation on the Spectral Fingerprints of Earth-like Planets Orbiting M dwarfs
- An Upper Limit on the Albedo of HD 209458b: Direct Imaging Photometry with the MOST Satellite
- A Rocky Composition for an Earth-sized Exoplanet
- The Effects of Consistent Chemical Kinetics Calculations on the Pressure-Temperature Profiles and Emission Spectra of Hot Jupiters
- The ExoMolOP Database: Cross-sections and k-tables for Molecules of Interest in High-Temperature Exoplanet Atmospheres
- FastChem: A computer program for efficient complex chemical equilibrium calculations in the neutral/ionized gas phase with applications to stellar and planetary atmospheres
- Detection of Thermal Emission from a Super-Earth
- The Nature of the Atmosphere of the Transiting Super-Earth GJ 1214b
- The Roche limit for close-orbiting planets: Minimum density, composition constraints, and application to the 4.2-hour planet KOI 1843.03
- Vaporization of the Earth: Application to Exoplanet Atmospheres
- The 55 Cnc system reassessed
- Compositions of Hot Super-Earth Atmospheres: exploring Kepler Candidates
- Chemical Kinetics on Extrasolar Planets
- Kepler-78 and the Ultra-Short-Period Planets
- Exploring Biases of Atmospheric Retrievals in Simulated JWST Transmission Spectra of Hot Jupiters
- An Earth-sized exoplanet with a Mercury-like composition
- Optical Albedo Theory of Strongly-Irradiated Giant Planets: The Case of HD 209458b
- Linking the Climate and Thermal Phase Curve of 55 Cancri e
- Search for water in a super-Earth atmosphere: High-resolution optical spectroscopy of 55 Cancri e
- A Case for an Atmosphere on Super-Earth 55 Cancri e
- Search for an exosphere in sodium and calcium in the transmission spectrum of exoplanet 55 Cancri e
- Ks-band detection of thermal emission and color constraints to CoRoT-1b: A low-albedo planet with inefficient atmospheric energy redistribution and a temperature inversion
- The orbital phases and secondary transit of Kepler-10b - A physical interpretation based on the Lava-ocean planet model -
- GJ 1252b: A Hot Terrestrial Super-Earth With No Atmosphere
- K2 and Spitzer phase curves of the rocky ultra-short-period planet K2-141 b hint at a tenuous rock vapor atmosphere
- How to identify exoplanet surfaces using atmospheric trace species in hydrogen-dominated atmospheres
- HD 213885b: A transiting 1-day-period super-Earth with an Earth-like composition around a bright () star unveiled by TESS
- The discovery and mass measurement of a new ultra-short-period planet: EPIC~228732031b
- Analyzing Atmospheric Temperature Profiles and Spectra of M dwarf Rocky Planets
- A super-Earth and sub-Neptune transiting the late-type M dwarf LP 791-18
- A Scaling for Atmospheric Heat Redistribution on Tidally-Locked Rocky Planets
- K2-137 b: an Earth-sized planet in a 4.3-hour orbit around an M-dwarf
- GJ 1252 b: A 1.2 planet transiting an M3-dwarf at 20.4 pc
- The Detectability of Rocky Planet Surface and Atmosphere Composition with JWST: The Case of LHS 3844b
- On the abundance of non-cometary HCN on Jupiter
- Atmospheric compositions and observability of nitrogen dominated ultra-short period super-Earths
- Stellar impact on disequilibrium chemistry and on observed spectra of hot Jupiter atmospheres
- Observability of molecular species in a nitrogen dominated atmosphere for 55 Cancri e
- Temperature inversions on hot super-Earths: the case of CN in nitrogen-rich atmospheres
- Properties of Sub-Neptune Atmospheres: TOI-270 System
- A Framework for Optimizing Exoplanet Target Selection for the James Webb Space Telescope