Spectroscopy of FGKM-type stars for the scientific exploitation of the CARMENES exoplanet search
The increased interest that sparks the search for exoplanets over the last few years has resulted in the design of high-resolution spectrographs such as CARMENES, installed at the 3.5m telescope in the Calar Alto Observatory in Almería (Spain), in order to improve the radial-velocity measurements an...
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| Tipo de recurso: | tesis doctoral |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/3997 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/3997 |
| Access Level: | acceso abierto |
| Palabra clave: | 543.42(043.2) Spectrum analysis Espectroscopia Astrofísica |
| Sumario: | The increased interest that sparks the search for exoplanets over the last few years has resulted in the design of high-resolution spectrographs such as CARMENES, installed at the 3.5m telescope in the Calar Alto Observatory in Almería (Spain), in order to improve the radial-velocity measurements and, thus, to help detect Earth-type planets around stars other than the Sun. Among these, M dwarfs constitute ideal candidates given their ubiquity in the solar neighbourhood, low temperatures, and low masses, which favours detections by both the radial-velocity and transit techniques. In this context, the determination of stellar atmospheric parameters is an essential step to characterise exoplanet systems and to shed light on their formation and evolution by means of compared planetology, which tries to link the properties of exoplanets with those of their host stars. In particular, the CARMENES instrument, by virtue of its high resolution and simultaneous spectral coverage in the optical and near-infrared wavelength regions, not only provides key information for the analysis of cool stars, but it also opens up the opportunity to revisit classical techniques, such as the equivalent width method and spectral synthesis, to assess the impact of the near-infrared region on the computation of stellar parameters... |
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