Geology and Photometric Variation of Solar System Bodies with Minor Atmospheres: Implications for Solid Exoplanets
arXiv:1409.1051 · doi:10.1089/ast.2014.1165
Abstract
A reasonable basis for future astronomical investigations of exoplanets lies in our best knowledge of the planets and satellites in the Solar System. Solar System bodies exhibit a wide variety of surface environments, even including potential habitable conditions beyond Earth, and it is essential to know how they can be characterized from outside the Solar System. In this study, we provide an overview of geological features of major Solar System solid bodies with minor atmospheres (i.e., the Terrestrial Moon, Mercury, the Galilean moons, and Mars) that affect surface albedo at local to global scale, and we survey how they influence point-source photometry in UV, visible, and near IR (i.e., the reflection-dominant range). We simulate them based on recent mapping products and also compile observed light curves where available. We show a 5-50% peak-to-trough variation amplitude in one spin rotation associated with various geological processes including heterogeneous surface compositions due to igneous activities, interaction with surrounding energetic particles, and distribution of grained materials. Some indications of these processes are provided by the amplitude and wavelength dependence of variation in combinations of the time-averaged spectra. We also estimate the photometric precision needed to detect their spin rotation rates through periodogram analysis. Our survey illustrates realistic possibilities for inferring the detailed properties of solid exoplanets with future direct imaging observations.
arXiv comment8 figures, 3 tables, Astrobiology, in press
References in corpus (26)
- Spectral Evolution of an Earth-Like Planet
- Alien Maps of an Ocean-Bearing World
- Characterization of extrasolar terrestrial planets from diurnal photometric variability
- Inverting Phase Functions to Map Exoplanets
- The Spectrum of Earthshine: A Pale Blue Dot Observed from the Ground
- Detecting the Glint of Starlight on the Oceans of Distant Planets
- Detecting Oceans on Extrasolar Planets Using the Glint Effect
- A test for the search for life on extrasolar planets: Looking for the terrestrial vegetation signature in the Earthshine spectrum
- Formation of Terrestrial Planets from Protoplanets under a Realistic Accretion Condition
- Theoretical Spectra of Terrestrial Exoplanet Surfaces
- Detection of Ocean Glint and Ozone Absorption Using LCROSS Earth Observations
- Colors of a Second Earth: Estimating the fractional areas of ocean, land, and vegetation of Earth-like exoplanets
- Identifying the rotation rate and the presence of dynamic weather on extrasolar Earth-like planets from photometric observations
- Mapping Earth Analogs from Photometric Variability: Spin-Orbit Tomography for Planets in Inclined Orbits
- Global Mapping of Earth-like Exoplanets from Scattered Light Curves
- Deciphering Spectral Fingerprints of Habitable Extrasolar Planets
- Colors of a Second Earth II: Effects of Clouds on Photometric Characterization of Earth-like Exoplanets
- Determining Reflectance Spectra of Surfaces and Clouds on Exoplanets
- Rotational Variability of Earth's Polar Regions: Implications for Detecting Snowball Planets
- Mapping Clouds and Terrain of Earth-like Planets from Photometric Variability: Demonstration with Planets in Face-on Orbits
- Modeling the Infrared Spectrum of the Earth-Moon System: Implications for the Detection and Characterization of Earthlike Extrasolar Planets and their Moonlike Companions
- Biomarkers in disk-averaged near-UV to near-IR Earth spectra using Earthshine observations
- On the effects of the evolution of microbial mats and land plants on the Earth as a planet. Photometric and spectroscopic light curves of paleo-Earths
- Variability of Water and Oxygen Absorption Bands in the Disk-Integrated Spectra of the Earth
- Reconstructing the photometric light curves of Earth as a planet along its history
- Tohoku-Hiroshima-Nagoya planetary spectra library: A method for characterizing planets in the visible to near infrared
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- Exploring and Validating Exoplanet Atmospheric Retrievals with Solar System Analog Observations
- The Fundamental Connections Between the Solar System and Exoplanetary Science
- exocartographer: A Bayesian Framework for Mapping Exoplanets in Reflected Light
- Frequency Modulation of Directly Imaged Exoplanets: Geometric Effect as a Probe of Planetary Obliquity
- Synergies between Venus & Exoplanetary Observations
- Brightness modulations of our nearest terrestrial planet Venus reveal atmospheric super-rotation rather than surface features
- Finding Mountains with Molehills: The Detectability of Exotopography
- Unveiling non-gray surface of cloudy exoplanets: the influence of wavelength-dependent surface albedo and cloud scattering properties on retrieval solutions
- Reflected Light Observations of the Galilean Satellites from Cassini: a testbed for cold terrestrial exoplanets
- The photometric observation of the quasi-simultaneous mutual eclipse and occultation between Europa and Ganymede on 22 August 2021