Classical Nova Carinae 2018: Discovery of circumbinary iron and oxygen

We present time-lapse spectroscopy of a classical nova explosion commencing 9 days after discovery. These data reveal the appearance of a transient feature in Fe II and [O I]. We explore different models for this feature and conclude that it is best explained by a circumbinary disc shock-heated foll...

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Bibliographic Details
Published in:arXiv.org 2020-03
Main Authors: McLoughlin, Dominic, Blundell, Katherine M, Lee, Steven
Format: Article
Language:English
Subjects:
Angular momentum
Iron
Novae
Online Access:Get full text
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Summary:We present time-lapse spectroscopy of a classical nova explosion commencing 9 days after discovery. These data reveal the appearance of a transient feature in Fe II and [O I]. We explore different models for this feature and conclude that it is best explained by a circumbinary disc shock-heated following the classical nova event. Circumbinary discs may play an important role in novae in accounting for the absorption systems known as THEA, the transfer of angular momentum, and the possible triggering of the nova event itself.
ISSN:2331-8422
DOI:10.48550/arxiv.2003.02008