Publication Abstracts

Harman and Domagal-Goldman 2018

Harman, C.E., and S. Domagal-Goldman, 2018: Biosignature false positives. In Handbook of Exoplanets. H.J. Deeg and J.A. Belmonte, Eds. Springer International, doi:10.1007/978-3-319-30648-3_71-1.

In our search for life — whether within the earliest part of Earth's geologic record, on planets within our solar system such Mars, or especially for extrasolar planets — we must infer the presence of life from its impact on the local or global environment. These "biosignatures," often identified from the known influence of terrestrial organisms on the Earth's atmosphere and surface, could be misdiagnosed when we apply them to alien worlds. The so-called false positives may occur when another process or suite of processes masks or mimics a biosignature. Here, we examine several leading biosignatures, then introduce potential false positives for these signals, and finally discuss methods to discriminate between the two using current and future detection technologies. We conclude that it is the astrobiology community's responsibility to thoroughly exhaust all possibilities before we resort to "life" as an explanation.

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BibTeX Citation

@inbook{ha09810h,
  author={Harman, C. E. and Domagal-Goldman, S.},
  editor={Deeg, H. J. and Belmonte, J. A.},
  title={Biosignature false positives},
  booktitle={Handbook of Exoplanets},
  year={2018},
  publisher={Springer International},
  doi={10.1007/978-3-319-30648-3_71-1},
}

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RIS Citation

TY  - CHAP
ID  - ha09810h
AU  - Harman, C. E.
AU  - Domagal-Goldman, S.
ED  - Deeg, H. J.
ED  - Belmonte, J. A.
PY  - 2018
TI  - Biosignature false positives
BT  - Handbook of Exoplanets
DO  - 10.1007/978-3-319-30648-3_71-1
PB  - Springer International
ER  -

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