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Bayesian Analysis for Remote Biosignature Identification on exoEarths (BARBIE). IV. Analyzing CO2 Detections in the Near-IR to Determine the Long-wavelength Cutoff for the Habitable Worlds Observatory Coronagraph

  • Authors: Celeste Hagee, Natasha Latouf, Avi M. Mandell, Michael D. Himes, Michael Dane Moore, Geronimo L. Villanueva

Celeste Hagee et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 8.

Top: required SNR for a strong CO2 detection at 1.44 μm (a), 1.52 μm (b), and 1.63 μm (c). Bottom: required SNR for a strong CH4 detection at 1.44 μm (d), 1.52 μm (e), and 1.63 μm (f). For each CO2–CH4 combination, the necessary SNR required for a strong detection is shown, where darker colors correlate to higher SNRs and lighter colors correlate to lower SNRs. CH4 abundances are plotted on the x-axis, and CO2 abundances are plotted on the y-axis. CH4 and CO2 abundances are taken from Table 4.

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