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Un sistema de estrellas triples con un disco circunstelar desalineado y deformado formado por el desgarro del disco
Stefan Kraus1, Alexander Kreplin2, Alison K Young2,3
1School of Physics and Astronomy, University of Exeter, Exeter EX4 4QL, UK. s.kraus@exeter.ac.uk.
Science (New York, N.Y.)
|September 5, 2020
Resumen
El desgarro del disco en el sistema triple de GW Orionis proporciona evidencia de discos circumestelares deformados y desalineados. Este fenómeno puede explicar la formación de planetas de amplia separación en órbitas oblicuas.
Área de la Ciencia:
- Astronomía y astrofísica
- Ciencias exoplanetarias
Sus antecedentes:
- Las estrellas jóvenes forman planetas dentro de los discos circumestelares.
- Los sistemas estelares múltiples pueden interrumpir estos discos a través de las fuerzas gravitacionales.
- Los modelos teóricos predicen el desgarro del disco (deformación y precesión del anillo) para los discos desalineados.
Objetivo del estudio:
- Para investigar el fenómeno del desgarro del disco en un sistema estelar real.
- Proporcionar evidencia observacional para las predicciones teóricas de la deformación del disco y la precesión del anillo.
Principales métodos:
- Observaciones del sistema de estrellas triple GW Orionis.
- Análisis de datos de imágenes para identificar estructuras de disco y su alineación.
- Análisis de las sombras para confirmar la deformación del disco.
Principales resultados:
- Se han observado rasgones de disco en GW Orionis.
- Se identificó un anillo excéntrico, desalineado con los planos orbitales estelares.
- El anillo proyecta sombras en una región de disco intermedio fuertemente deformada.
Conclusiones:
- El desgarro del disco es un fenómeno observable en múltiples sistemas estelares.
- Este proceso puede crear discos deformados y anillos de procesamiento.
- El desgarro del disco puede ofrecer un mecanismo para la formación de planetas de amplia separación en órbitas oblicuas.
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