The Key to Unlocking Exoplanet Biosignatures: a UK-led IR Spectrograph for the Habitable Worlds Observatory Coronagraph
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866918380876857344 |
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| author | Biller, Beth Dicken, Dan Absil, Olivier Artan, Raziye Barstow, Jo Birkby, Jayne Dumas, Christophe Hinkley, Sasha Komacek, Tad Morris, Katherine Pino, Lorenzo Rugheimer, Sarah Snodgrass, Colin Todd, Stephen Thurairethinam, Vinooja Triaud, Amaury |
| author_facet | Biller, Beth Dicken, Dan Absil, Olivier Artan, Raziye Barstow, Jo Birkby, Jayne Dumas, Christophe Hinkley, Sasha Komacek, Tad Morris, Katherine Pino, Lorenzo Rugheimer, Sarah Snodgrass, Colin Todd, Stephen Thurairethinam, Vinooja Triaud, Amaury |
| contents | The detection of life on rocky exoplanets in the habitable zones of nearby stars would be a paradigm-shifting advance, and it is one of the greatest scientific challenges of our time. There is no single spectral feature that is an unambiguous sign of life on a given exoplanet. Instead, the current state-of-the-art approach involves detecting multiple molecular atmospheric features that should not exist together in equilibrium, e.g. simultaneous detection of O$_2$ and CH$_4$. Spectra across a wide wavelength (0.3-1.7 $μ$m) range are necessary to cover multiple spectral features per molecule of interest and to contextualise the suite of molecular features detected. While the US will lead the optical arm of the Habitable Worlds Observatory (HWO) coronagraph, a UK-led contribution of a near-infrared Integral Field Spectrograph (IFS) for the infrared arm will ensure UK leadership in the flagship scientific goal of HWO - to search for signatures of life on potentially habitable exoplanets. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2603_09321 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The Key to Unlocking Exoplanet Biosignatures: a UK-led IR Spectrograph for the Habitable Worlds Observatory Coronagraph Biller, Beth Dicken, Dan Absil, Olivier Artan, Raziye Barstow, Jo Birkby, Jayne Dumas, Christophe Hinkley, Sasha Komacek, Tad Morris, Katherine Pino, Lorenzo Rugheimer, Sarah Snodgrass, Colin Todd, Stephen Thurairethinam, Vinooja Triaud, Amaury Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics The detection of life on rocky exoplanets in the habitable zones of nearby stars would be a paradigm-shifting advance, and it is one of the greatest scientific challenges of our time. There is no single spectral feature that is an unambiguous sign of life on a given exoplanet. Instead, the current state-of-the-art approach involves detecting multiple molecular atmospheric features that should not exist together in equilibrium, e.g. simultaneous detection of O$_2$ and CH$_4$. Spectra across a wide wavelength (0.3-1.7 $μ$m) range are necessary to cover multiple spectral features per molecule of interest and to contextualise the suite of molecular features detected. While the US will lead the optical arm of the Habitable Worlds Observatory (HWO) coronagraph, a UK-led contribution of a near-infrared Integral Field Spectrograph (IFS) for the infrared arm will ensure UK leadership in the flagship scientific goal of HWO - to search for signatures of life on potentially habitable exoplanets. |
| title | The Key to Unlocking Exoplanet Biosignatures: a UK-led IR Spectrograph for the Habitable Worlds Observatory Coronagraph |
| topic | Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2603.09321 |