The DOI matches its Crossref record; 48 of the 48 references it cites were found in a registry or an index.
IDENTIFYING PLANETARY BIOSIGNATURE IMPOSTORS: SPECTRAL FEATURES OF CO AND O 4 RESULTING FROM ABIOTIC O 2 /O 3 PRODUCTION
Open accessAbstract
O 2 and O 3 have been long considered the most robust individual biosignature gases in a planetary atmosphere, yet multiple mechanisms that may produce them in the absence of life have been described. However, these abiotic planetary mechanisms modify the environment in potentially identifiable ways. Here we briefly discuss two of the most detectable spectral discriminants for abiotic O 2 /O 3 : CO and O 4 . We produce the first explicit self-consistent simulations of these spectral discriminants as they may be seen by James Webb Space Telescope ( JWST ). If JWST -NIRISS and/or NIRSpec observe CO (2.35, 4.6 μ m) in conjunction with CO 2 (1.6, 2.0, 4.3 μ m) in the transmission spectrum of a terrestrial planet it could indicate robust CO 2 photolysis and suggest that a future detection of O 2 or O 3 might not be biogenic. Strong O 4 bands seen in transmission at 1.06 and 1.27 μ m could be diagnostic of a post-runaway O 2 -dominated atmosphere from massive H-escape. We find that for these false positive scenarios, CO at 2.35 μ m, CO 2 at 2.0 and 4.3 μ m, and O 4 at 1.27 μ m are all stronger features in transmission than O 2 /O 3 and could be detected with S/Ns ≳ 3 for an Earth-size planet orbiting a nearby M dwarf star with as few as 10 transits, assuming photon-limited noise. O 4 bands could also be sought in UV/VIS/NIR reflected light (at 0.345, 0.36, 0.38, 0.445, 0.475, 0.53, 0.57, 0.63, 1.06, and 1.27 μ m) by a next generation direct-imaging telescope such as LUVOIR/HDST or HabEx and would indicate an oxygen atmosphere too massive to be biologically produced.
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“because CO has few abiotic sinks and detectable spectral features (42), mantle-derived methane could readily be identified by coexisting CO.”
From Disequilibrium biosignatures over Earth history and implications for detecting exoplanet life (2018) · cites this paper as [42]
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Cites
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Self-citationA super-Earth transiting a nearby low-mass star
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RETRACTED ARTICLE: Exoplanet Habitability: Potential O2/O3 Biosignatures in the Ultraviolet
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Metadata
- Authors
- Schwieterman, E. W., Meadows, V. S., Domagal-Goldman, S. D., Deming, D., Arney, G. N., Luger, R., Harman, C. E., Misra, A., & Barnes, R.
- Affiliations
- NASA Astrobiology Institute (US)
- Goddard Space Flight Center (US)
- Pennsylvania State University (US)
- ORCID
- Venue
- The Astrophysical Journal Letters
- Publisher
- American Astronomical Society
- Published
- 2016-02-25
- Volume
- 819
- Issue
- 1
- Pages
- L13
- ISSN
- 2041-8205 (ISSN-L)
- 2041-8213
- PMC
- PMC6108182
- OpenAlex
- W2279598166
- Cited by
- 111
- References
- 47
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 4 · 2023: 6 · 2022: 4 · 2021: 6 · 2020: 10 · 2019: 15 · 2018: 32 · 2017: 15 · 2016: 11
- FWCI
- 11.62
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- The Astrophysical Journal Letters (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- arXiv (Cornell University) (submittedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Aeronautics and Space Administration (NNA13AA93A, NNH12ZDA002C)
- University of Washington
- NASA Astrobiology Institute (NNH12ZDA002C, NNA13AA93A)
- Astrophysics Division
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Space Science and Extraterrestrial Life
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Physical Sciences › Earth and Planetary Sciences › Space and Planetary Science › Planetary Science and Exploration
- Keywords
- ozone, carbon monoxide, CO2 photolysis, runaway greenhouse, hydrogen escape, transmission spectroscopy, James Webb Space Telescope, terrestrial exoplanets, M dwarfs, false positives, reflectance spectroscopy, direct imaging, LUVOIR, HabEx
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