Signature of life on exoplanets: Can Darwin produce false positive detections?

By F. Selsis, D. Despois, J. Parisot. 2002

165 citations recorded by the source corpus.

Subfields: Astronomy and Astrophysics, Ecology

View Paper: https://www.semanticscholar.org/paper/d916432ae28b69585bfdbb07f8efdaffb8c9fff3

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. L. Kaltenegger
2. Sara Seager
3. J. Owen
4. J. Kasting
5. R. Wordsworth
6. Jon Fortney
7. D. Deming
8. N. Madhusudhan

In Ecology

1. L. Kaltenegger
2. R. Hu
3. Sara Seager
4. William Bains
5. J. Kasting
6. T. Robinson
7. R. Wordsworth
8. T. Guillot

Citations in the corpus

• ABIOTIC OZONE AND OXYGEN IN ATMOSPHERES SIMILAR TO PREBIOTIC EARTH (2014, background): “This strategy for discriminating false- and truepositives is similar to the one suggested by Selsis et al. (2002).”
• How to Characterize Habitable Worlds and Signs of Life (2017, background): “…a host star dominates the photochemistry, which influences the resulting atmospheric constituents and biosignatures for terrestrial planets (e.g., Selsis et al. 2002, Segura et al. 2003, 2005, Grenfell et al. 2007, Rauer et al. 2011, Hedelt et al. 2013, Rugheimer et al. 2013, 2015b, Tian et al.…”
• Exoplanet Atmospheres: Physical Processes (2010, background): “Other O2 and O3 false positive scenarios (Selsis et al. 2002) are discussed and countered in Segura et al. (2007).”
• A new family of planets? Ocean-Planets (2003, background): “Two cases of planetary atmospheres may result in a photochem build-up of O2 (Selsis et al., 2002): (i) CO2-rich atmospheres:PCO2 > 50 mbar for dry atmospheres,PCO2 > 0.5 bar for wet atmospheres, and (ii) water-rich atmospheres loosing hydrogen to space after H2O photolysis (for instance during a…”
• ABIOTIC O2 LEVELS ON PLANETS AROUND F, G, K, AND M STARS: POSSIBLE FALSE POSITIVES FOR LIFE? (2015, background): “Selsis et al. (2002) predicted high abiotic O2 levels in dense CO2 atmospheres, but their model suffered from this same problem (Segura et al. 2007).”
• Potential Biosignatures in Super-Earth Atmospheres (2010, methodology): “Previous major modelling efforts producing synthetic spectra of hypothetical terrestrial extra-solar planets were performed by e.g. Selsis (2000), Selsis et al. (2002), Des Marais et al. (2002), Segura et al. (2003), Segura et al. (2005), Tinetti (2006), Ehrenreich et al. (2006), Kaltenegger et al.…”
• Biosignatures from Earth-Like Planets Around M Dwarfs (2005, unknown): “For planets with Earth’s atmospheric composition around F, G, and K stars, O2 and O3 are the biosignatures that are most likely to be detectable (Owen, 1980; Leger et al., 1993; Angel and Woolf, 1996; Des Marais et al., 2002; Selsis et al., 2002; Segura et al., 2003).”
• A chemical model for the atmosphere of hot Jupiters (2012, background): “…study the atmospheric photochemistry of various objects in the Solar System: Neptune (Dobrijevic et al. 2010a), Titan (Hébrard et al. 2006, 2007), Saturn (Dobrijevic et al. 2003; Cavalié et al. 2009), and Jupiter (Cavalié et al. 2008) as well as extrasolar terrestrial planets (Selsis et al. 2002).”
• ABIOTIC OXYGEN-DOMINATED ATMOSPHERES ON TERRESTRIAL HABITABLE ZONE PLANETS (2014, background): “Various authors have investigated the idea that abiotic oxygen production could lead to ‘false positives’ for life (Selsis et al. 2002; Segura et al. 2007; Léger et al. 2011; Hu et al. 2012; Tian et al. 2014).”
• High stellar FUV/NUV ratio and oxygen contents in the atmospheres of potentially habitable planets (2013, background): “Selsis et al. (2002) investigated the following catalytic oxygen loss mechanism involving HO2:”
• PHOTOCHEMISTRY IN TERRESTRIAL EXOPLANET ATMOSPHERES. I. PHOTOCHEMISTRY MODEL AND BENCHMARK CASES (2012, background): “…atmospheres, either for understanding prebiotic Earth’s atmosphere (e.g., Walker 1977; Kasting et al. 1979; Kasting & Catling 2003), or for assessing whether abiotic oxygen can be a false positive for detecting photosynthesis on habitable exoplanets (Selsis et al. 2002; Segura et al. 2007).”
• Loss of water from Mars: Implications for the oxidation of the soil (2003, methodology): “5 AU the martian history, based on our power law relationship derived from mates of stellar winds of solar-like stars (Selsis et al., 2002b). The da curve shows the evolution of the solar wind velocity based on a mod Newkirk (1980).”