Observation and assignment of a high-resolution FTIR-spectrum of T<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si100.svg" display="inline" id="d1e867"><mml:msubsup><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mn>16</mml:mn></mml:mrow></mml:msubsup></mml:math>O, DT16O and HT16O in the range of 4300 to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si28.svg" display="inline" id="d1e884"><mml:mrow><mml:mn>4700</mml:mn><mml:mspace width="0.16667em"/><mm

Hermann, Valentin; Freise, Anne; Schlösser, Magnus; Hase, Frank; Orphal, Johannes

doi:10.1016/j.jms.2023.111859

Journal of Molecular Spectroscopy

2023

DOI: 10.1016/j.jms.2023.111859

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Observation and assignment of a high-resolution FTIR-spectrum of T216O, DT16O and HT16O in the range of 4300 to 4700

Valentin Hermann,

Anne Freise,

Magnus Schlösser

et al.

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2024

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The Challenge of Detecting Remote Spectroscopic Signatures from Radionuclides

Haqq-Misra,

Kofman,

Kopparapu

2024

ApJ

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The characterization of exoplanetary atmospheres through transit spectra is becoming increasingly feasible, and technology for direct detection remains ongoing. The possibility of detecting spectral features could enable quantitative constraints on atmospheric composition or even serve as a potential biosignature, with the sensitivity of the instrument and observation time as key limiting factors. This paper discusses the possibility that future remote observations could detect the presence of radioactive elements in the atmospheres of exoplanets. Such radionuclides could arise from cosmogenic or geologic sources, as well as from industrial sources, all of which occur on Earth. The detection of radionuclides in an exoplanetary atmosphere could reveal important properties about the planet’s geology or space environment and potentially could serve as a technosignature. However, many radionuclides, including those from industrial sources, attach to aerosol or other particles that cannot be remotely characterized. Limited experimental and theoretical spectral data exist for long-lived radionuclides, but the sensitivity required to detect the spectral features of some known radionuclides would be at least several orders of magnitude greater than required to detect the spectral features of molecular oxygen. Present-day remote spectroscopic observing mission concepts at ultraviolet to mid-infrared wavelengths are not sensitive to discern the presence of radionuclides in exoplanetary atmospheres. Interplanetary fly-by or probe missions may be more likely to provide such data in the future.

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The Challenge of Detecting Remote Spectroscopic Signatures from Radionuclides

Haqq-Misra,

Kofman,

Kopparapu

2024

ApJ

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show abstract

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Observation and assignment of a high-resolution FTIR-spectrum of T216O, DT16O and HT16O in the range of 4300 to 4700

Cited by 1 publication

References 29 publications

The Challenge of Detecting Remote Spectroscopic Signatures from Radionuclides

The Challenge of Detecting Remote Spectroscopic Signatures from Radionuclides

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