Deciphering transmission spectra by exploring the solar paradigm
[Aims] Transmission spectroscopy allows to measure the wavelength dependence of the transit signal of an exoplanet, thus enabling probing of its atmospheric composition. However, the transmission spectrum also carries information of the host star, generally referred to as ‘contamination‘. Stellar ac...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/418504 |
| Acceso en línea: | http://hdl.handle.net/10261/418504 http://arxiv.org/abs/2512.06487v1 |
| Access Level: | acceso abierto |
| Palabra clave: | Stars: atmospheres Stars: low-mass Sun: atmosphere Sun: faculae, plages Sun: magnetic fields Sunspots |
| Sumario: | [Aims] Transmission spectroscopy allows to measure the wavelength dependence of the transit signal of an exoplanet, thus enabling probing of its atmospheric composition. However, the transmission spectrum also carries information of the host star, generally referred to as ‘contamination‘. Stellar activity leads to an apparent change in the stellar radius, directly impacting the transit depth. This contamination is regarded as the major hurdle in discovering and characterising the atmospheres of exoplanets. |
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