Current browse context:
astro-ph.EP
Change to browse by:
References & Citations
Astrophysics > Earth and Planetary Astrophysics
Title: An Overview of Exoplanet Biosignatures
(Submitted on 23 Apr 2024)
Abstract: This chapter reviews proposed exoplanet biosignatures, including their biological origins, observable features, atmospheric sinks, and potentially confounding abiotic sources. Emphasis is placed on material published since past comprehensive reviews while providing a foundational understanding of each named biosignature. Topics include possible gaseous biosignatures (e.g., O$_2$, O$_3$, CH$_4$, N$_2$O, DMS, CH$_3$Cl, C$_5$H$_8$, NH$_3$, PH$_3$), surface biosignatures (e.g., vegetation red edge, other pigment features, polarization signatures), and temporal biosignatures (e.g., atmospheric seasonality). Potential frameworks for assessing remote biosignatures are described. Text and table summaries provide references to relevant original research articles.
Submission history
From: Edward W. Schwieterman [view email] [via NATALIE proxy][v1] Tue, 23 Apr 2024 18:19:42 GMT (11024kb)
Link back to: arXiv, form interface, contact.