High-Resolution spectral models of TRAPPIST-1e seen as a Pale Blue Dot for ELT and JWST observations
arXiv:2209.02875 · doi:10.1093/mnras/stac2536
Abstract
Rocky exoplanets orbiting in the habitable zone (HZ) of nearby M dwarfs provide unique opportunities for characterizing their atmospheres and searching for biosignature gases. TRAPPIST-1e, a temperate Earth-sized exoplanet in the HZ of a nearby M dwarf, is arguably the most favorable target for ground- and space-based atmospheric characterization by the extremely large telescopes (ELTs) and the James Webb Space Telescope (JWST). To inform future observations in reflected and emitted lights using these upcoming telescopes, we simulate the high-resolution reflection and emission spectra for TRAPPIST-1e for both modern and prebiotic Earth-like atmospheric compositions. To demonstrate the effects of wavelength-dependent albedo on climate and spectra, we further simulate five albedo scenarios for each atmospheric composition: cloudy modern Earth-like, cloud-free modern Earth-like, cloudy ocean planet, 100 per cent cloudy planet, and wavelength-independent albedo of 0.31. We use the recent Mega-MUSCLES spectral energy distribution (SED) of TRAPPIST-1 for our models. We show that the O + CH and O + CH biosignature pairs as well as climate indicators (CO and HO) show features in both high-resolution reflection and emission spectra of TRAPPIST-1e that the ELTs can search for. Our high-resolution database for modern and prebiotic Earth TRAPPIST-1e models with various surface compositions and cloud distributions provides a tool for observers to train retrieval algorithms and plan observation strategies to characterize this potentially habitable world.
arXiv comment8 pages, 5 figures, 1 table. Accepted for publication in MNRAS
References in corpus (46)
- The Galaxy Evolution Explorer: A Space Ultraviolet Survey Mission
- Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
- Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
- A terrestrial planet candidate in a temperate orbit around Proxima Centauri
- Temperate Earth-sized planets transiting a nearby ultracool dwarf star
- Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life
- Biosignatures from Earth-Like Planets Around M Dwarfs
- The MUSCLES Treasury Survey I: Motivation and Overview
- Stabilizing Cloud Feedback Dramatically Expands the Habitable Zone of Tidally Locked Planets
- A temperate rocky super-Earth transiting a nearby cool star
- Transits of Earth-Like Planets
- An Earth-sized Planet in the Habitable Zone of a Cool Star
- HD 209458b in New Light: Evidence of Nitrogen Chemistry, Patchy Clouds and Sub-Solar Water
- Spectral Evolution of an Earth-Like Planet
- The MUSCLES Treasury Survey II: Intrinsic Lyman Alpha and Extreme Ultraviolet Spectra of K and M Dwarfs with Exoplanets
- How to Characterize Habitable Worlds and Signs of Life
- Water loss from Earth-sized planets in the habitable zones of ultracool dwarfs: Implications for the planets of TRAPPIST-1
- Observing the Atmospheres of Known Temperate Earth-sized Planets with JWST
- The inner edge of the habitable zone for synchronously rotating planets around low-mass stars using general circulation models
- The Detectability and Characterization of the TRAPPIST-1 Exoplanet Atmospheres with JWST
- Assessing the Habitability of the TRAPPIST-1 System Using a 3D Climate Model
- Atmospheric escape from the TRAPPIST-1 planets and implications for habitability
- Modelling climate diversity, tidal dynamics and the fate of volatiles on TRAPPIST-1 planets
- Carbon monoxide and water vapor in the atmosphere of the non-transiting exoplanet HD 179949 b
- Evolved Climates and Observational Discriminants for the TRAPPIST-1 Planetary System
- The MUSCLES Treasury Survey. V. FUV Flares on Active and Inactive M Dwarfs
- A Catalog of Kepler Habitable Zone Exoplanet Candidates
- Spectral Fingerprints of Earth-like Planets Around FGK Stars
- Impact of Clouds and Hazes on the Simulated JWST Transmission Spectra of Habitable Zone Planets in the TRAPPIST-1 System
- Temporal evolution of the high-energy irradiation and water content of TRAPPIST-1 exoplanets
- A temperate exo-Earth around a quiet M dwarf at 3.4 parsecs
- TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Motivations and protocol version 1.0
- Spectra of Earth-like Planets Through Geological Evolution Around FGKM Stars
- The Mega-MUSCLES Spectral Energy Distribution Of TRAPPIST-1
- Sensitivity of Biosignatures on Earth-like Planets orbiting in the Habitable Zone of Cool M-Dwarf Stars to varying Stellar UV Radiation and Surface Biomass Emissions
- Atmospheric convection plays a key role in the climate of tidally-locked terrestrial exoplanets: insights from high-resolution simulations
- The Origins Space Telescope
- Predictions for Observable Atmospheres of Trappist-1 Planets from a Fully Coupled Atmosphere-Interior Evolution Model
- Lessons from early Earth: UV surface radiation should not limit the habitability of active M star systems
- Differentiating Modern and Prebiotic Earth Scenarios for TRAPPIST-1e: High-resolution Transmission Spectra and Predictions for JWST
- Revised Exoplanet Radii and Habitability Using Gaia Data Release 2
- The Effect of Land Albedo on the Climate of Land-Dominated Planets in the TRAPPIST-1 System
- How surfaces shape the climate of habitable exoplanets
- High-Resolution Transmission Spectra of Earth through Geological Time
- Climate Diversity in the Solar-Like Habitable Zone due to Varying Background Gas Pressure
- Finding Signs of Life on Earth-like Planets: High-resolution Transmission Spectra of Earth through time around FGKM stars