Parámetros astrofísicos de enanas M con exoplanetas
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2024
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24/03/2023
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Universidad Complutense de Madrid
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Las enanas M son las estrellas más abundantes en el Universo. Albergan una rica diversidad de compañeros planetarios, que son mucho más evidentes en estas estrellas más pequeñas. Los avances tecnológicos continúan ampliando los límites de lo que es posible detectar en ellas, incluso cuando se manifiestan como señales débiles. En muchos casos, los planetas que orbitan enanas M también pueden describirse con notable detalle. Lo que marca la diferencia es la completitud con el que podemos caracterizarla estrella anfitriona. Esto incluye modelar adecuadamente sus atmósferas, su abundancia en metales y sus procesos de actividad. Si se describen adecuadamente de manera individualizada, estas numerosas estrellas tienen el potencial de proporcionar conclusiones estadísticamente robustas cuando se combinan en muestras más grandes. Carmencita es el catálogo de entrada de enanas M cercanas para el proyecto CARMENES, que tiene como objetivo buscar planetas del tamaño de la Tierra potencialmente habitables orbitando alrededor de ellas. Contiene más de dos mil enanas M que son examinadas por los miembros del consorcio desde múltiples ángulos y con un alto grado de atención al detalle...
M dwarfs are the most abundant stars in the Universe. They are hosts of a rich diversity of planetary companions, which are much more noticeable in these smaller stars. Advancements in technology continue to push the boundaries of what is possible to be detected on them, even when they exist as faint signals. In many cases, planets orbiting M dwarfs can also be described in remarkable detail. What makes the difference is how deeply we can characterise the host star. This includes to properly model their atmospheres, their abundance of metals, and their activity processes. If they are well described individually, these numerous stars have the potential for providing statistically robust conclusions when combined into larger samples. Carmencita is the input catalogue of nearby M dwarfs for the CARMENES project, which aims to search for potentially habitable Earth-sized planets orbiting them. It contains more than two thousand M dwarfs that are scrutinized by the consortium members from multiple angles and with a high degree of attention to detail...
M dwarfs are the most abundant stars in the Universe. They are hosts of a rich diversity of planetary companions, which are much more noticeable in these smaller stars. Advancements in technology continue to push the boundaries of what is possible to be detected on them, even when they exist as faint signals. In many cases, planets orbiting M dwarfs can also be described in remarkable detail. What makes the difference is how deeply we can characterise the host star. This includes to properly model their atmospheres, their abundance of metals, and their activity processes. If they are well described individually, these numerous stars have the potential for providing statistically robust conclusions when combined into larger samples. Carmencita is the input catalogue of nearby M dwarfs for the CARMENES project, which aims to search for potentially habitable Earth-sized planets orbiting them. It contains more than two thousand M dwarfs that are scrutinized by the consortium members from multiple angles and with a high degree of attention to detail...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Ciencias Físicas, leída el 24-03-2023







