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La edad del movimiento adecuado de la progenie de Nova Scorpii AD 1437

M M Shara^1,2, K Iłkiewicz³, J Mikołajewska³

¹Department of Astrophysics, American Museum of Natural History, Central Park West and 79th Street, New York, New York 10024, USA.

|September 1, 2017

Resumen

Muchas nuevas viejas, un tipo de variable cataclísmica, hacen la transición a nuevas enanas entre erupciones. Este estudio recuperó un sistema de nova clásica de 1437 que ahora exhibe un comportamiento de nova enana, apoyando este vínculo evolutivo.

Área de la Ciencia:

* Astrofísica
* Evolución estelar
* Sistemas binarios

Sus antecedentes:

* Las variables cataclísmicas son sistemas binarios con una enana blanca, propensos a estallidos energéticos como las novas clásicas.
* Las novas clásicas resultan de reacciones termonucleares desenfrenadas en enanas blancas, que alcanzan altas luminosidades.
* Las binarias similares a las novas y las novas enanas comparten propiedades pero difieren en las tasas de transferencia de masa, un rompecabezas de larga data.

Objetivo del estudio:

* Para investigar el vínculo evolutivo entre las novas clásicas y las novas enanas.
* Para comprender el comportamiento a largo plazo de los sistemas después de una erupción de nova clásica.
* Para resolver el rompecabezas de la coexistencia de sistemas de novas y novas enanas en períodos orbitales similares.

Principales métodos:

* Recuperación y confirmación de la edad del sistema binario subyacente a la erupción de nova clásica AD 1437.
* Datación por movimiento propio para verificar de forma independiente la edad del sistema.
* Observación del comportamiento eruptivo actual (explosiones de nova enanas) en el sistema recuperado.

Principales resultados:

* El sistema binario de la erupción de la nova clásica de 1437 fue recuperado con éxito.
* El sistema, casi 500 años después de la erupción, ahora está exhibiendo estallidos de nova enana.
* Otras tres antiguas novas clásicas, que también muestran capas de novas, se observan actualmente como novas enanas.

Conclusiones:

* Las nuevas clásicas antiguas se convierten en nuevas enanas durante largos períodos entre erupciones de nuevas recurrentes.
* Esta vía evolutiva explica la coexistencia de sistemas de novas y novas enanas.
* El comportamiento observado apoya una evolución cíclica dentro de los sistemas variables cataclísmicos.

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