Photosynthesis on habitable planets around low-mass stars

Abstract

We show that planets around M-dwarfs with $M_{\star }\lesssim 0.2M_{\odot }$ may not receive enough photons in the photosynthetically active range of $400$-$750$ nm to sustain Earth-like biospheres. As a result of the lower biological productivity, it is likely that biotic molecular oxygen would not build up to detectable levels in the atmospheres of habitable planets orbiting low-mass stars, consistent with prior work by Lehmer et al. (2018). We also estimate the minimum flaring rate for sustaining biospheres with Earth-like productivity and permitting the build-up of atmospheric oxygen, and find that the overwhelming majority of M-dwarfs are unlikely to exceed this threshold.

arXiv commentAccepted for publication in MNRAS; 6 pages; 2 figures

References in corpus (29)

• Extreme Water Loss and Abiotic O${}_2$ Buildup On Planets Throughout the Habitable Zones of M Dwarfs
• The Effect of a Strong Stellar Flare on the Atmospheric Chemistry of an Earth-like Planet Orbiting an M dwarf
• The Kepler Catalog of Stellar Flares
• Exoplanet Biosignatures: Understanding Oxygen as a Biosignature in the Context of Its Environment
• Spectral signatures of photosynthesis II: coevolution with other stars and the atmosphere on extrasolar worlds
• Stellar Winds on the Main-Sequence II: the Evolution of Rotation and Winds
• Atmospheric escape from the TRAPPIST-1 planets and implications for habitability
• The Origin of RNA Precursors on Exoplanets
• Frequent flaring in the TRAPPIST-1 system - unsuited for life?
• Disequilibrium biosignatures over Earth history and implications for detecting exoplanet life
• Is Proxima Centauri b habitable? -- A study of atmospheric loss
• Detectability of biosignatures in anoxic atmospheres with the James Webb Space Telescope: A TRAPPIST-1e case study
• The Surface UV Environment on Planets Orbiting M-Dwarfs: Implications for Prebiotic Chemistry & Need for Experimental Follow-Up
• UV habitable zones around M stars
• MOST Observations of our Nearest Neighbor: Flares on Proxima Centauri
• False negatives for remote life detection on ocean-bearing planets: Lessons from the early Earth
• Risks for life on habitable planets from superflares of their host stars
• The Potential of Planets Orbiting Red Dwarf Stars to Support Oxygenic Photosynthesis and Complex Life
• Physical constraints for the evolution of life on exoplanets
• Relative Likelihood for Life as a Function of Cosmic Time
• The dehydration of water worlds via atmospheric losses
• Biosignature Anisotropy Modeled on Temperate Tidally Locked M-dwarf Planets
• Relative Likelihood of Success in the Searches for Primitive versus Intelligent Extraterrestrial Life
• Dependence of Biological Activity on the Surface Water Fraction of Planets
• The Propitious Role of Solar Energetic Particles in the Origin of Life
• Is Life Most Likely Around Sun-like Stars?
• Why do we find ourselves around a yellow star instead of a red star?
• Photosynthesis on a planet orbiting an M dwarf: enhanced effectiveness during flares
• Optimal Target Stars in the Search for Life

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• Implications of different stellar spectra for the climate of tidally-locked Earth-like exoplanets
• A Study of Flares in the Ultra-Cool Regime from SPECULOOS-South
• Efficiency of the oxygenic photosynthesis on Earth-like planets in the habitable zone
• Role of stellar physics in regulating the critical steps for life
• Brown Dwarf Atmospheres as the Potentially Most Detectable and Abundant Sites for Life
• Testing Earth-like atmospheric evolution on exo-Earths through oxygen absorption: required sample sizes and the advantage of age-based target selection
• Eta-Earth Revisited II: Deriving a Maximum Number of Earth-like Habitats in the Galactic Disk
• Interstellar communication network. I. Overview and assumptions
• Photosynthesis on Exoplanets and Exomoons from Reflected Light
• Excitation Properties of Photopigments and Their Possible Dependence on the Host Star
• Multiverse Predictions for Habitability: The Number of Stars and their Properties
• Prospects for Life on Temperate Planets Around Brown Dwarfs
• Exoplanet Exergy: Why useful work matters for planetary habitabilty
• Constraints on Aquatic Photosynthesis for Terrestrial Planets Around Other Stars
• Characteristics of aquatic biospheres on temperate planets around Sun-like stars and M-dwarfs
• The Fermi Paradox revisited: Technosignatures and the Contact Era
• Photosynthetic exergy I. Thermodynamic limits for habitable-zone planets
• Super-Earths, M Dwarfs, and Photosynthetic Organisms: Habitability in the Lab